# B–Mo phases > B–Mo system: 17 phases (tier A 7, tier C 3, liquid 1, needs_review 6); 15 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references. HTML: https://data.orchid-project.org/phases/pages/B-MO.html · Markdown: https://data.orchid-project.org/phases/pages/B-MO.md 17 phases (tier A 7, tier C 3, liquid 1, needs_review 6); 15 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model). Data: [interactive registry](https://orchid-project.org/phases/?q=B-MO) · [full JSON](https://data.orchid-project.org/phases/systems/B-MO.json) · [B–Mo system page](https://data.orchid-project.org/systems/B-MO.html) · [Markdown](https://data.orchid-project.org/phases/pages/B-MO.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the B–Mo system (17) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [BETA_RHOMBO_B](#phase-b-mo-b-beta-rhombo); _phase:b-mo:b-beta-rhombo_ | | needs_review | stable in 5 of 5 calculated diagram(s): 300–2374.37 K, x(B) 0.99727–1 | 13 | 5 | | [MB_B33](#phase-b-mo-b33-mb); _phase:b-mo:b33-mb_ | CrB · B33 · oC8 · Cmcm (63) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–2885.07 K, x(B) 0.5–0.5 | 0 | 1 | | [BCC_A2](#phase-b-mo-bcc-a2); _phase:b-mo:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–3999.77 K, x(B) 0–0.02574 | 14 | 5 | | [MB2_C32](#phase-b-mo-c32-mb2); _phase:b-mo:c32-mb2_ | | needs_review | stable in 1 of 1 calculated diagram(s): 778.4–2631.76 K, x(B) 0.58069–0.71272 | 0 | 1 | | [FCC_A1](#phase-b-mo-fcc-a1); _phase:b-mo:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | not stable in 5 calculated diagram(s) | 0 | 5 | | [HCP_A3](#phase-b-mo-hcp-a3); _phase:b-mo:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 5 calculated diagram(s) | 0 | 5 | | [LIQUID](#phase-b-mo-liquid); _phase:b-mo:liquid_ | liquid | liquid | stable in 5 of 5 calculated diagram(s): 2157.28–4000 K, x(B) 0–1 | 51 | 5 | | [MO2B_C16](#phase-b-mo-mo2b-c16); _phase:b-mo:mo2b-c16_ | Al2Cu · C16 · tI12 · I4/mcm (140) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–2561.11 K, x(B) 0.32601–0.3375 | 26 | 5 | | [MO2B3_C32](#phase-b-mo-mo2b3-c32); _phase:b-mo:mo2b3-c32_ | AlB2 · C32 · hP3 · P6/mmm (191) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1784.31–2662.57 K, x(B) 0.59841–0.60475 | 0 | 1 | | [MO2B5_D8I](#phase-b-mo-mo2b5-d8i); _phase:b-mo:mo2b5-d8i_ | | needs_review | stable in 3 of 3 calculated diagram(s): 300–2418.24 K, x(B) 0.67085–0.71429 | 26 | 3 | | [MO3B2_D5A](#phase-b-mo-mo3b2-d5a); _phase:b-mo:mo3b2-d5a_ | Si2U3 · D5_a · tP10 · P4/mbm (127) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 2197.66–2659.76 K, x(B) 0.4–0.4 | 0 | 2 | | [MOB](#phase-b-mo-mob); _phase:b-mo:mob_ | | needs_review | stable in 2 of 2 calculated diagram(s): 300–2876.77 K, x(B) 0.5–0.5 | 0 | 2 | | [MOB_B33](#phase-b-mo-mob-b33); _phase:b-mo:mob-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–2870 K, x(B) 0.48621–0.50764 | 32 | 2 | | [MOB_BG](#phase-b-mo-mob-bg); _phase:b-mo:mob-bg_ | MoB · B_g · tI16 · I4_1/amd (141) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–2454.33 K, x(B) 0.48305–0.50165 | 18 | 1 | | [MOB2_C32](#phase-b-mo-mob2-c32); _phase:b-mo:mob2-c32_ | | needs_review | stable in 3 of 3 calculated diagram(s): 1764.31–2653.79 K, x(B) 0.61453–0.66137 | 25 | 3 | | [MOB2_D8I](#phase-b-mo-mob2-d8i); _phase:b-mo:mob2-d8i_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–2423.32 K, x(B) 0.66667–0.66667 | 0 | 1 | | [MOB4](#phase-b-mo-mob4); _phase:b-mo:mob4_ | MoB4 · hP16 · P6_3/mmc (194) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 5 of 5 calculated diagram(s): 300–2087.99 K, x(B) 0.8–0.81156 | 3 | 5 | ## BETA_RHOMBO_B (B–Mo) - Id: `phase:b-mo:b-beta-rhombo`; status `needs_review` - No structure assigned. Why: name_has_descriptive_tokens:RHOMBO; no_structure_token - Candidate (sgte_mmc2): beta-B · hR105 · R-3m (166) — Hallstedt 2025 mmc2 row for BETA_RHOMBO_B: beta-B - Candidate (tdb_comment): beta-B · hR105 · R-3m — MoB-05Yan.tdb: 'Prototype beta-B (hR105, R-3m)' - Candidate (tdb_comment): beta-B · hR105 · R-3m — MoB-09Yam.tdb: 'Prototype beta-B (hR105, R-3m)' - Candidate (tdb_comment): beta-B · hR105 · R-3m — MoB-16Wit.tdb: 'Prototype beta-B (hR105, R-3m)' - Candidate (tdb_comment): beta-B · hR105 · R-3m — MoB-20Tak.tdb: 'Prototype beta-B (hR105, R-3m)' - Candidate (tdb_comment): beta-B · hR105 · R-3m — MoB-91Pan-LB.tdb: 'Prototype beta-B (hR105, R-3m)' - Stability: stable in 5 of 5 calculated diagram(s): 300–2374.37 K, x(B) 0.99727–1 - Literature: 13 values (13 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:b-beta-rhombo) Names (7): _corpus: _corpus:phase:b-mo:b-beta-rhombo _paper: _paper:10.1016/j.jallcom.2015.09.158:β(B) _tdb: _tdb:MoB-05Yan.tdb:BETA_RHOMBO_B, tdb:MoB-09Yam.tdb:BETA_RHOMBO_B, tdb:MoB-16Wit.tdb:BETA_RHOMBO_B, tdb:MoB-20Tak.tdb:BETA_RHOMBO_B, tdb:MoB-91Pan-LB.tdb:BETA_RHOMBO_B ### TDB models of BETA_RHOMBO_B (5): PHASE and CONSTITUENT statements as written [MoB-05Yan.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-05Yan.tdb): BETA_RHOMBO_B, type code %, sha256 `70d1d12bc57b9f23…` ~~~~text 43: PHASE BETA_RHOMBO_B % 1 1 ! 44: CONST BETA_RHOMBO_B : B : ! ~~~~ [MoB-09Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-09Yam.tdb): BETA_RHOMBO_B, type code %, sha256 `cb515d628eb00bec…` ~~~~text 57: PHASE BETA_RHOMBO_B % 1 1 ! 58: CONST BETA_RHOMBO_B : B : ! ~~~~ [MoB-16Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-16Wit.tdb): BETA_RHOMBO_B, type code %, sha256 `36161abf7ae35139…` ~~~~text 40: PHASE BETA_RHOMBO_B % 1 1 ! 41: CONST BETA_RHOMBO_B : B% MO : ! ~~~~ [MoB-20Tak.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-20Tak.tdb): BETA_RHOMBO_B, type code %, sha256 `3d8f0c60fb6fc085…` ~~~~text 51: PHASE BETA_RHOMBO_B % 1 1 ! 52: CONST BETA_RHOMBO_B : B : ! ~~~~ [MoB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-91Pan-LB.tdb): BETA_RHOMBO_B, type code %, sha256 `ad22665acf03099e…` ~~~~text 41: PHASE BETA_RHOMBO_B % 1 1 ! 42: CONST BETA_RHOMBO_B : B : ! ~~~~ Example references (6 of 6; assessments first): - [doi:10.1016/j.jallcom.2015.09.158](https://doi.org/10.1016/j.jallcom.2015.09.158) V.T. Witusiewicz, A.A. Bondar, U. Hecht, O.A. Potazhevska, T.Ya Velikanova, Thermodynamic modelling of the ternary B–Mo–Ti system with refined B–Mo description, Journal of Alloys and Compounds 655, 336-352 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1016/j.intermet.2004.06.007](https://doi.org/10.1016/j.intermet.2004.06.007) Y. Yang, Y.A. Chang, Thermodynamic modeling of the Mo–Si–B system, Intermetallics 13, 121-128 (2005). _assessment that models this phase_ - [doi:10.2355/tetsutohagane.TETSU-2019-097](https://doi.org/10.2355/tetsutohagane.TETSU-2019-097) K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020). _assessment that models this phase_ - [doi:10.1016/0364-5916(81)90037-7](https://doi.org/10.1016/0364-5916%2881%2990037-7) K.E. Spear, M.S. Wang, Thermodynamic modelling of the molybdenumeboron system, Calphad 5 (2) (1981) 109e113. _cited as the source of values for this phase_ - [doi:10.1021/j100519a008](https://doi.org/10.1021/j100519a008) Edmund Storms, Barbara Mueller, Phase relations and thermodynamic properties of transition metal borides. I. The molybdenum-boron system and elemental boron., J. Phys. Chem. 81, 318-324 (1977). _cited as the source of values for this phase_ ## MB_B33 (B–Mo) - Id: `phase:b-mo:b33-mb`; status `assigned` - Structure: CrB · B33 · oC8 · Cmcm (63); type `st:b33-crb-oc8`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated - Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (name_has_descriptive_tokens:MB, no_structure_token, structure_token_is_also_a_formula); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: B 0.5000, Mo 0.5000 - Stability: stable in 1 of 1 calculated diagram(s): 300–2885.07 K, x(B) 0.5–0.5 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:b33-mb) Names (2): _corpus: _corpus:phase:b-mo:b33-mb _tdb: _tdb:MoB-09Yam.tdb:MB_B33 ### TDB models of MB_B33 (1): PHASE and CONSTITUENT statements as written [MoB-09Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-09Yam.tdb): MB_B33, type code %, sha256 `cb515d628eb00bec…` ~~~~text 73: PHASE MB_B33 % 2 1 1 ! 74: CONST MB_B33 : MO : B : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _assessment that models this phase_ ## BCC_A2 (B–Mo) - Id: `phase:b-mo:bcc-a2`; status `assigned` - Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; tier A: standard phase name; confidence high - Stability: stable in 5 of 5 calculated diagram(s): 300–3999.77 K, x(B) 0–0.02574 - Literature: 14 values (14 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:bcc-a2) Names (7): _corpus: _corpus:phase:b-mo:bcc-a2 _paper: _paper:10.1016/j.jallcom.2015.09.158:A2Mo _tdb: _tdb:MoB-05Yan.tdb:BCC_A2, tdb:MoB-09Yam.tdb:BCC_A2, tdb:MoB-16Wit.tdb:BCC_A2, tdb:MoB-20Tak.tdb:BCC_A2, tdb:MoB-91Pan-LB.tdb:BCC_A2 ### TDB models of BCC_A2 (5): PHASE and CONSTITUENT statements as written [MoB-05Yan.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-05Yan.tdb): BCC_A2, type code %B, sha256 `70d1d12bc57b9f23…` ~~~~text 33: PHASE BCC_A2 %B 2 1 3 ! 34: CONST BCC_A2 : MO : VA : ! ~~~~ [MoB-09Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-09Yam.tdb): BCC_A2, type code %B, sha256 `cb515d628eb00bec…` ~~~~text 47: PHASE BCC_A2 %B 2 1 3 ! 48: CONST BCC_A2 : B MO% : VA : ! ~~~~ [MoB-16Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-16Wit.tdb): BCC_A2, type code %B, sha256 `36161abf7ae35139…` ~~~~text 30: PHASE BCC_A2 %B 2 1 3 ! 31: CONST BCC_A2 : MO : B VA% : ! ~~~~ [MoB-20Tak.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-20Tak.tdb): BCC_A2, type code %B, sha256 `3d8f0c60fb6fc085…` ~~~~text 41: PHASE BCC_A2 %B 2 1 3 ! 42: CONST BCC_A2 : B MO% : VA : ! ~~~~ [MoB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-91Pan-LB.tdb): BCC_A2, type code %B, sha256 `ad22665acf03099e…` ~~~~text 31: PHASE BCC_A2 %B 2 1 3 ! 32: CONST BCC_A2 : MO : B VA% : ! ~~~~ Example references (6 of 6; assessments first): - [doi:10.1016/j.jallcom.2015.09.158](https://doi.org/10.1016/j.jallcom.2015.09.158) V.T. Witusiewicz, A.A. Bondar, U. Hecht, O.A. Potazhevska, T.Ya Velikanova, Thermodynamic modelling of the ternary B–Mo–Ti system with refined B–Mo description, Journal of Alloys and Compounds 655, 336-352 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1016/j.intermet.2004.06.007](https://doi.org/10.1016/j.intermet.2004.06.007) Y. Yang, Y.A. Chang, Thermodynamic modeling of the Mo–Si–B system, Intermetallics 13, 121-128 (2005). _assessment that models this phase_ - [doi:10.2355/tetsutohagane.TETSU-2019-097](https://doi.org/10.2355/tetsutohagane.TETSU-2019-097) K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020). _assessment that models this phase_ - [doi:10.1016/0364-5916(81)90037-7](https://doi.org/10.1016/0364-5916%2881%2990037-7) K.E. Spear, M.S. Wang, Thermodynamic modelling of the molybdenumeboron system, Calphad 5 (2) (1981) 109e113. _cited as the source of values for this phase_ - [doi:10.1016/s0925-8388(00)01258-5](https://doi.org/10.1016/s0925-8388%2800%2901258-5) M. Morishita, K. Koyama, S. Yagi, G. Zhang, Calculated phase diagram of the Ni–Mo–B ternary system, Journal of Alloys and Compounds 314, 212-218 (2001). _cited as the source of values for this phase_ ## MB2_C32 (B–Mo) - Id: `phase:b-mo:c32-mb2`; status `needs_review` - No structure assigned. Why: sgte_mmc2_row_disagrees_with_name:MB2_C32; sgte_mmc2_rows_disagree; unrecognised_name_tokens:MB2 - Candidate (name_token): AlB2 · C32 · hP3 · P6/mmm (191) — Strukturbericht/word 'C32' in the TDB name - Candidate (sgte_mmc2): AlB2 · C32 · hP3 · P6/mmm (191) — Hallstedt 2025 mmc2 row for MB2_C32: CrB2, MoB2, ZrB2 - Candidate (sgte_mmc2): Mo2B5 · D8_i · hR7 · R-3m (166) — Hallstedt 2025 mmc2 row for MB2_C32: Mo2B5 (see AlB2) - Candidate (tdb_comment): AlB2 · hP3 · P6/mmm — MoB-09Yam.tdb: 'Prototype AlB2 (hP3, P6/mmm)' - Stability: stable in 1 of 1 calculated diagram(s): 778.4–2631.76 K, x(B) 0.58069–0.71272 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:c32-mb2) Names (2): _corpus: _corpus:phase:b-mo:c32-mb2 _tdb: _tdb:MoB-09Yam.tdb:MB2_C32 ### TDB models of MB2_C32 (1): PHASE and CONSTITUENT statements as written [MoB-09Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-09Yam.tdb): MB2_C32, type code %, sha256 `cb515d628eb00bec…` ~~~~text 79: PHASE MB2_C32 % 2 1 2 ! 80: CONST MB2_C32 : MO VA : B VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _assessment that models this phase_ ## FCC_A1 (B–Mo) - Id: `phase:b-mo:fcc-a1`; status `assigned` - Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high - Stability: not stable in 5 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:fcc-a1) Names (6): _corpus: _corpus:phase:b-mo:fcc-a1 _tdb: _tdb:MoB-05Yan.tdb:FCC_A1, tdb:MoB-09Yam.tdb:FCC_A1, tdb:MoB-16Wit.tdb:FCC_A1, tdb:MoB-20Tak.tdb:FCC_A1, tdb:MoB-91Pan-LB.tdb:FCC_A1 ### TDB models of FCC_A1 (5): PHASE and CONSTITUENT statements as written [MoB-05Yan.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-05Yan.tdb): FCC_A1, type code %A, sha256 `70d1d12bc57b9f23…` ~~~~text 28: PHASE FCC_A1 %A 2 1 1 ! 29: CONST FCC_A1 : MO : VA : ! ~~~~ [MoB-09Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-09Yam.tdb): FCC_A1, type code %A, sha256 `cb515d628eb00bec…` ~~~~text 42: PHASE FCC_A1 %A 2 1 1 ! 43: CONST FCC_A1 : B MO : VA : ! ~~~~ [MoB-16Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-16Wit.tdb): FCC_A1, type code %A, sha256 `36161abf7ae35139…` ~~~~text 25: PHASE FCC_A1 %A 2 1 1 ! 26: CONST FCC_A1 : MO : VA : ! ~~~~ [MoB-20Tak.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-20Tak.tdb): FCC_A1, type code %A, sha256 `3d8f0c60fb6fc085…` ~~~~text 36: PHASE FCC_A1 %A 2 1 1 ! 37: CONST FCC_A1 : B MO : VA : ! ~~~~ [MoB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-91Pan-LB.tdb): FCC_A1, type code %A, sha256 `ad22665acf03099e…` ~~~~text 26: PHASE FCC_A1 %A 2 1 1 ! 27: CONST FCC_A1 : MO : B VA% : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1016/j.intermet.2004.06.007](https://doi.org/10.1016/j.intermet.2004.06.007) Y. Yang, Y.A. Chang, Thermodynamic modeling of the Mo–Si–B system, Intermetallics 13, 121-128 (2005). _assessment that models this phase_ - [doi:10.1016/j.jallcom.2015.09.158](https://doi.org/10.1016/j.jallcom.2015.09.158) V.T. Witusiewicz, A.A. Bondar, U. Hecht, O.A. Potazhevska, T.Ya Velikanova, Thermodynamic modelling of the ternary B–Mo–Ti system with refined B–Mo description, Journal of Alloys and Compounds 655, 336-352 (2016). _assessment that models this phase_ - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _assessment that models this phase_ - [doi:10.2355/tetsutohagane.TETSU-2019-097](https://doi.org/10.2355/tetsutohagane.TETSU-2019-097) K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020). _assessment that models this phase_ ## HCP_A3 (B–Mo) - Id: `phase:b-mo:hcp-a3`; status `assigned` - Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high - Stability: not stable in 5 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:hcp-a3) Names (6): _corpus: _corpus:phase:b-mo:hcp-a3 _tdb: _tdb:MoB-05Yan.tdb:HCP_A3, tdb:MoB-09Yam.tdb:HCP_A3, tdb:MoB-16Wit.tdb:HCP_A3, tdb:MoB-20Tak.tdb:HCP_A3, tdb:MoB-91Pan-LB.tdb:HCP_A3 ### TDB models of HCP_A3 (5): PHASE and CONSTITUENT statements as written [MoB-05Yan.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-05Yan.tdb): HCP_A3, type code %A, sha256 `70d1d12bc57b9f23…` ~~~~text 38: PHASE HCP_A3 %A 2 1 0.5 ! 39: CONST HCP_A3 : MO : VA : ! ~~~~ [MoB-09Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-09Yam.tdb): HCP_A3, type code %A, sha256 `cb515d628eb00bec…` ~~~~text 52: PHASE HCP_A3 %A 2 1 0.5 ! 53: CONST HCP_A3 : B MO : VA : ! ~~~~ [MoB-16Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-16Wit.tdb): HCP_A3, type code %A, sha256 `36161abf7ae35139…` ~~~~text 35: PHASE HCP_A3 %A 2 1 0.5 ! 36: CONST HCP_A3 : MO : B VA% : ! ~~~~ [MoB-20Tak.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-20Tak.tdb): HCP_A3, type code %A, sha256 `3d8f0c60fb6fc085…` ~~~~text 46: PHASE HCP_A3 %A 2 1 0.5 ! 47: CONST HCP_A3 : B MO : VA : ! ~~~~ [MoB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-91Pan-LB.tdb): HCP_A3, type code %A, sha256 `ad22665acf03099e…` ~~~~text 36: PHASE HCP_A3 %A 2 1 0.5 ! 37: CONST HCP_A3 : MO : B VA% : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1016/j.intermet.2004.06.007](https://doi.org/10.1016/j.intermet.2004.06.007) Y. Yang, Y.A. Chang, Thermodynamic modeling of the Mo–Si–B system, Intermetallics 13, 121-128 (2005). _assessment that models this phase_ - [doi:10.1016/j.jallcom.2015.09.158](https://doi.org/10.1016/j.jallcom.2015.09.158) V.T. Witusiewicz, A.A. Bondar, U. Hecht, O.A. Potazhevska, T.Ya Velikanova, Thermodynamic modelling of the ternary B–Mo–Ti system with refined B–Mo description, Journal of Alloys and Compounds 655, 336-352 (2016). _assessment that models this phase_ - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _assessment that models this phase_ - [doi:10.2355/tetsutohagane.TETSU-2019-097](https://doi.org/10.2355/tetsutohagane.TETSU-2019-097) K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020). _assessment that models this phase_ ## LIQUID (B–Mo) - Id: `phase:b-mo:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 5 of 5 calculated diagram(s): 2157.28–4000 K, x(B) 0–1 - Literature: 51 values (51 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:liquid) Names (7): _corpus: _corpus:phase:b-mo:liquid _paper: _paper:10.1016/j.jallcom.2015.09.158:L _tdb: _tdb:MoB-05Yan.tdb:LIQUID, tdb:MoB-09Yam.tdb:LIQUID, tdb:MoB-16Wit.tdb:LIQUID, tdb:MoB-20Tak.tdb:LIQUID, tdb:MoB-91Pan-LB.tdb:LIQUID ### TDB models of LIQUID (5): PHASE and CONSTITUENT statements as written [MoB-05Yan.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-05Yan.tdb): LIQUID, type code %, sha256 `70d1d12bc57b9f23…` ~~~~text 23: PHASE LIQUID:L % 1 1 ! 24: CONST LIQUID:L : B MO : ! ~~~~ [MoB-09Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-09Yam.tdb): LIQUID, type code %, sha256 `cb515d628eb00bec…` ~~~~text 37: PHASE LIQUID:L % 1 1 ! 38: CONST LIQUID:L : B MO : ! ~~~~ [MoB-16Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-16Wit.tdb): LIQUID, type code %, sha256 `36161abf7ae35139…` ~~~~text 20: PHASE LIQUID:L % 1 1 ! 21: CONST LIQUID:L : B MO : ! ~~~~ [MoB-20Tak.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-20Tak.tdb): LIQUID, type code %, sha256 `3d8f0c60fb6fc085…` ~~~~text 31: PHASE LIQUID:L % 1 1 ! 32: CONST LIQUID:L : B MO : ! ~~~~ [MoB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-91Pan-LB.tdb): LIQUID, type code %, sha256 `ad22665acf03099e…` ~~~~text 21: PHASE LIQUID:L % 1 1 ! 22: CONST LIQUID:L : B MO : ! ~~~~ Example references (6 of 6; assessments first): - [doi:10.1016/j.jallcom.2015.09.158](https://doi.org/10.1016/j.jallcom.2015.09.158) V.T. Witusiewicz, A.A. Bondar, U. Hecht, O.A. Potazhevska, T.Ya Velikanova, Thermodynamic modelling of the ternary B–Mo–Ti system with refined B–Mo description, Journal of Alloys and Compounds 655, 336-352 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1016/j.intermet.2004.06.007](https://doi.org/10.1016/j.intermet.2004.06.007) Y. Yang, Y.A. Chang, Thermodynamic modeling of the Mo–Si–B system, Intermetallics 13, 121-128 (2005). _assessment that models this phase_ - [doi:10.2355/tetsutohagane.TETSU-2019-097](https://doi.org/10.2355/tetsutohagane.TETSU-2019-097) K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020). _assessment that models this phase_ - [doi:10.1016/0364-5916(81)90037-7](https://doi.org/10.1016/0364-5916%2881%2990037-7) K.E. Spear, M.S. Wang, Thermodynamic modelling of the molybdenumeboron system, Calphad 5 (2) (1981) 109e113. _cited as the source of values for this phase_ - [doi:10.1016/s0925-8388(00)01258-5](https://doi.org/10.1016/s0925-8388%2800%2901258-5) M. Morishita, K. Koyama, S. Yagi, G. Zhang, Calculated phase diagram of the Ni–Mo–B ternary system, Journal of Alloys and Compounds 314, 212-218 (2001). _cited as the source of values for this phase_ ## MO2B_C16 (B–Mo) - Id: `phase:b-mo:mo2b-c16`; status `assigned` - Structure: Al2Cu · C16 · tI12 · I4/mcm (140); type `st:c16-al2cu-ti12`; tier A: standard phase name; confidence high - Stability: stable in 5 of 5 calculated diagram(s): 300–2561.11 K, x(B) 0.32601–0.3375 - Literature: 26 values (26 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:mo2b-c16) Names (7): _corpus: _corpus:phase:b-mo:mo2b-c16 _paper: _paper:10.1016/j.jallcom.2015.09.158:Mo2B _tdb: _tdb:MoB-05Yan.tdb:MO2B_C16, tdb:MoB-09Yam.tdb:MO2B_C16, tdb:MoB-16Wit.tdb:MO2B_C16, tdb:MoB-20Tak.tdb:MO2B_C16, tdb:MoB-91Pan-LB.tdb:MO2B_C16 ### TDB models of MO2B_C16 (5): PHASE and CONSTITUENT statements as written [MoB-05Yan.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-05Yan.tdb): MO2B_C16, type code %, sha256 `70d1d12bc57b9f23…` ~~~~text 48: PHASE MO2B_C16 % 2 2 1 ! 49: CONST MO2B_C16 : MO : B : ! ~~~~ [MoB-09Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-09Yam.tdb): MO2B_C16, type code %, sha256 `cb515d628eb00bec…` ~~~~text 62: PHASE MO2B_C16 % 2 2 1 ! 63: CONST MO2B_C16 : MO : B : ! ~~~~ [MoB-16Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-16Wit.tdb): MO2B_C16, type code %, sha256 `36161abf7ae35139…` ~~~~text 45: PHASE MO2B_C16 % 2 2 1 ! 46: CONST MO2B_C16 : MO% VA : B% VA : ! ~~~~ [MoB-20Tak.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-20Tak.tdb): MO2B_C16, type code %, sha256 `3d8f0c60fb6fc085…` ~~~~text 56: PHASE MO2B_C16 % 2 2 1 ! 57: CONST MO2B_C16 : MO : B : ! ~~~~ [MoB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-91Pan-LB.tdb): MO2B_C16, type code %, sha256 `ad22665acf03099e…` ~~~~text 46: PHASE MO2B_C16 % 2 2 1 ! 47: CONST MO2B_C16 : MO : B : ! ~~~~ Example references (6 of 6; assessments first): - [doi:10.1016/j.jallcom.2015.09.158](https://doi.org/10.1016/j.jallcom.2015.09.158) V.T. Witusiewicz, A.A. Bondar, U. Hecht, O.A. Potazhevska, T.Ya Velikanova, Thermodynamic modelling of the ternary B–Mo–Ti system with refined B–Mo description, Journal of Alloys and Compounds 655, 336-352 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1016/j.intermet.2004.06.007](https://doi.org/10.1016/j.intermet.2004.06.007) Y. Yang, Y.A. Chang, Thermodynamic modeling of the Mo–Si–B system, Intermetallics 13, 121-128 (2005). _assessment that models this phase_ - [doi:10.2355/tetsutohagane.TETSU-2019-097](https://doi.org/10.2355/tetsutohagane.TETSU-2019-097) K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020). _assessment that models this phase_ - [doi:10.1016/0364-5916(81)90037-7](https://doi.org/10.1016/0364-5916%2881%2990037-7) K.E. Spear, M.S. Wang, Thermodynamic modelling of the molybdenumeboron system, Calphad 5 (2) (1981) 109e113. _cited as the source of values for this phase_ - [doi:10.1016/s0925-8388(00)01258-5](https://doi.org/10.1016/s0925-8388%2800%2901258-5) M. Morishita, K. Koyama, S. Yagi, G. Zhang, Calculated phase diagram of the Ni–Mo–B ternary system, Journal of Alloys and Compounds 314, 212-218 (2001). _cited as the source of values for this phase_ ## MO2B3_C32 (B–Mo) - Id: `phase:b-mo:mo2b3-c32`; status `assigned` - Structure: AlB2 · C32 · hP3 · P6/mmm (191); type `st:c32-alb2-hp3`; tier A: standard phase name; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 1784.31–2662.57 K, x(B) 0.59841–0.60475 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:mo2b3-c32) Names (2): _corpus: _corpus:phase:b-mo:mo2b3-c32 _tdb: _tdb:MoB-20Tak.tdb:MO2B3_C32 ### TDB models of MO2B3_C32 (1): PHASE and CONSTITUENT statements as written [MoB-20Tak.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-20Tak.tdb): MO2B3_C32, type code %, sha256 `3d8f0c60fb6fc085…` ~~~~text 72: PHASE MO2B3_C32 % 2 1 2 ! 73: CONST MO2B3_C32 : MO : B% VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.2355/tetsutohagane.TETSU-2019-097](https://doi.org/10.2355/tetsutohagane.TETSU-2019-097) K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020). _assessment that models this phase_ ## MO2B5_D8I (B–Mo) - Id: `phase:b-mo:mo2b5-d8i`; status `needs_review` - No structure assigned. Why: assessment_declared_blocked_by:site_ratios_contradict_D8_i; site_ratios_contradict_D8_i:MoB-16Wit.tdb; stoichiometry_contradicts_D8_i:MoB-91Pan-LB.tdb - Candidate (literature_printed): Mo2B5 · hR7 — printed with a label mapped to this phase - Candidate (name_token): Mo2B5 · D8_i · hR7 · R-3m (166) — Strukturbericht/word 'D8I' in the TDB name - Candidate (sgte_mmc2): Mo2B5 · D8_i · hR7 · R-3m (166) — Hallstedt 2025 mmc2 row for MO2B5_D8I: Mo2B5 - Candidate (sgte_mmc2): Mo2B5 · D8_i · hR7 · R-3m (166) — Hallstedt 2025 mmc2 row for MO2B5_D8I: Mo8B17 - Candidate (tdb_comment): Mo2B5 · hR6 · R-3m — MoB-05Yan.tdb: 'Prototype Mo2B5 (hR6, R-3m)' - Candidate (tdb_comment): Mo2B5 · hR6 · R-3m — MoB-16Wit.tdb: 'Prototype Mo2B5 (hR6, R-3m)' - Candidate (tdb_comment): Mo2B5 · hR7 · R-3m — MoB-91Pan-LB.tdb: 'Prototype Mo2B5 (hR7, R-3m)' - Stability: stable in 3 of 3 calculated diagram(s): 300–2418.24 K, x(B) 0.67085–0.71429 - Literature: 26 values (26 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:mo2b5-d8i) Names (5): _corpus: _corpus:phase:b-mo:mo2b5-d8i _paper: _paper:10.1016/j.jallcom.2015.09.158:Mo2B5 _tdb: _tdb:MoB-05Yan.tdb:MO2B5_D8I, tdb:MoB-16Wit.tdb:MO2B5_D8I, tdb:MoB-91Pan-LB.tdb:MO2B5_D8I ### TDB models of MO2B5_D8I (3): PHASE and CONSTITUENT statements as written [MoB-05Yan.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-05Yan.tdb): MO2B5_D8I, type code %, sha256 `70d1d12bc57b9f23…` ~~~~text 64: PHASE MO2B5_D8I % 2 2 5 ! 65: CONST MO2B5_D8I : MO : B% VA : ! ~~~~ [MoB-16Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-16Wit.tdb): MO2B5_D8I, type code %, sha256 `36161abf7ae35139…` ~~~~text 65: PHASE MO2B5_D8I % 2 0.32 0.68 ! 66: CONST MO2B5_D8I : MO% VA : B% VA : ! ~~~~ [MoB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-91Pan-LB.tdb): MO2B5_D8I, type code %, sha256 `ad22665acf03099e…` ~~~~text 62: PHASE MO2B5_D8I % 2 8 17 ! 63: CONST MO2B5_D8I : MO : B : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.jallcom.2015.09.158](https://doi.org/10.1016/j.jallcom.2015.09.158) V.T. Witusiewicz, A.A. Bondar, U. Hecht, O.A. Potazhevska, T.Ya Velikanova, Thermodynamic modelling of the ternary B–Mo–Ti system with refined B–Mo description, Journal of Alloys and Compounds 655, 336-352 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.intermet.2004.06.007](https://doi.org/10.1016/j.intermet.2004.06.007) Y. Yang, Y.A. Chang, Thermodynamic modeling of the Mo–Si–B system, Intermetallics 13, 121-128 (2005). _assessment that models this phase_ - [doi:10.1016/0364-5916(81)90037-7](https://doi.org/10.1016/0364-5916%2881%2990037-7) K.E. Spear, M.S. Wang, Thermodynamic modelling of the molybdenumeboron system, Calphad 5 (2) (1981) 109e113. _cited as the source of values for this phase_ - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _cited as the source of values for this phase_ - [doi:10.1021/j100519a008](https://doi.org/10.1021/j100519a008) Edmund Storms, Barbara Mueller, Phase relations and thermodynamic properties of transition metal borides. I. The molybdenum-boron system and elemental boron., J. Phys. Chem. 81, 318-324 (1977). _cited as the source of values for this phase_ ## MO3B2_D5A (B–Mo) - Id: `phase:b-mo:mo3b2-d5a`; status `assigned` - Structure: Si2U3 · D5_a · tP10 · P4/mbm (127); type `st:d5-a-si2u3-tp10`; tier A: standard phase name; confidence high - Stoichiometry: B 0.4000, Mo 0.6000 - Stability: stable in 2 of 2 calculated diagram(s): 2197.66–2659.76 K, x(B) 0.4–0.4 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:mo3b2-d5a) Names (3): _corpus: _corpus:phase:b-mo:mo3b2-d5a _tdb: _tdb:MoB-09Yam.tdb:MO3B2_D5A, tdb:MoB-20Tak.tdb:MO3B2_D5A ### TDB models of MO3B2_D5A (2): PHASE and CONSTITUENT statements as written [MoB-09Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-09Yam.tdb): MO3B2_D5A, type code %, sha256 `cb515d628eb00bec…` ~~~~text 67: PHASE MO3B2_D5A % 2 3 2 ! 68: CONST MO3B2_D5A : MO : B : ! ~~~~ [MoB-20Tak.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-20Tak.tdb): MO3B2_D5A, type code %, sha256 `3d8f0c60fb6fc085…` ~~~~text 61: PHASE MO3B2_D5A % 2 3 2 ! 62: CONST MO3B2_D5A : MO : B : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _assessment that models this phase_ - [doi:10.2355/tetsutohagane.TETSU-2019-097](https://doi.org/10.2355/tetsutohagane.TETSU-2019-097) K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020). _assessment that models this phase_ ## MOB (B–Mo) - Id: `phase:b-mo:mob`; status `needs_review` - No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_rows_disagree - Candidate (dft_mp): I4_1/amd (141) — on-hull MP BMo at x(MO)=0.5000 - Candidate (dft_oqmd): I41/amd (141) — on-hull OQMD B1 Mo1 at x(MO)=0.5000 - Candidate (sgte_mmc2): MoB · B_g · tI16 · I4_1/amd (141) — Hallstedt 2025 mmc2 row for MOB: alpha-MoB - Candidate (sgte_mmc2): CrB · B33 · oC8 · Cmcm (63) — Hallstedt 2025 mmc2 row for MOB: beta-MoB - Candidate (tdb_comment): CrB · oC8 · Cmcm — MoB-05Yan.tdb: 'Prototype CrB (oC8, Cmcm), this is beta-MoB' - Candidate (tdb_comment): MoB · tI16 · I4_1/amd — MoB-05Yan.tdb: 'Prototype MoB (tI16, I4_1/amd), this is alpha-MoB' - Candidate (tdb_comment): CrB · oC8 · Cmcm, SB B33 — MoB-91Pan-LB.tdb: 'Prototype CrB (oC8, Cmcm, SB B33), beta-MoB' - Candidate (tdb_comment): MoB · tI16 · I4_1/amd, SB B_g — MoB-91Pan-LB.tdb: 'Prototype MoB (tI16, I4_1/amd, SB B_g), alpha-MoB' - Stoichiometry: B 0.5000, Mo 0.5000 - Stability: stable in 2 of 2 calculated diagram(s): 300–2876.77 K, x(B) 0.5–0.5 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:mob) Names (3): _corpus: _corpus:phase:b-mo:mob _tdb: _tdb:MoB-05Yan.tdb:MOB, tdb:MoB-91Pan-LB.tdb:MOB ### TDB models of MOB (2): PHASE and CONSTITUENT statements as written [MoB-05Yan.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-05Yan.tdb): MOB, type code %, sha256 `70d1d12bc57b9f23…` ~~~~text 54: PHASE MOB % 2 1 1 ! 55: CONST MOB : MO : B : ! ~~~~ [MoB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-91Pan-LB.tdb): MOB, type code %, sha256 `ad22665acf03099e…` ~~~~text 52: PHASE MOB % 2 1 1 ! 53: CONST MOB : MO : B : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.intermet.2004.06.007](https://doi.org/10.1016/j.intermet.2004.06.007) Y. Yang, Y.A. Chang, Thermodynamic modeling of the Mo–Si–B system, Intermetallics 13, 121-128 (2005). _assessment that models this phase_ ## MOB_B33 (B–Mo) - Id: `phase:b-mo:mob-b33`; status `assigned` - Structure: CrB · B33 · oC8 · Cmcm (63); type `st:b33-crb-oc8`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated - Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model, structure_token_is_also_a_formula); structure as stated in the SGTE crystallographic table for this phase name and system - Stability: stable in 2 of 2 calculated diagram(s): 300–2870 K, x(B) 0.48621–0.50764 - Literature: 32 values (32 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:mob-b33) Names (5): _corpus: _corpus:phase:b-mo:mob-b33 _paper: _paper:10.1016/j.jallcom.2015.09.158:MoB, paper:10.1016/j.jallcom.2015.09.158:βMoB _tdb: _tdb:MoB-16Wit.tdb:MOB_B33, tdb:MoB-20Tak.tdb:MOB_B33 ### TDB models of MOB_B33 (2): PHASE and CONSTITUENT statements as written [MoB-16Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-16Wit.tdb): MOB_B33, type code %, sha256 `36161abf7ae35139…` ~~~~text 55: PHASE MOB_B33 % 2 1 1 ! 56: CONST MOB_B33 : MO% VA : B% VA : ! ~~~~ [MoB-20Tak.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-20Tak.tdb): MOB_B33, type code %, sha256 `3d8f0c60fb6fc085…` ~~~~text 67: PHASE MOB_B33 % 2 1 1 ! 68: CONST MOB_B33 : MO : B : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.jallcom.2015.09.158](https://doi.org/10.1016/j.jallcom.2015.09.158) V.T. Witusiewicz, A.A. Bondar, U. Hecht, O.A. Potazhevska, T.Ya Velikanova, Thermodynamic modelling of the ternary B–Mo–Ti system with refined B–Mo description, Journal of Alloys and Compounds 655, 336-352 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.2355/tetsutohagane.TETSU-2019-097](https://doi.org/10.2355/tetsutohagane.TETSU-2019-097) K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020). _assessment that models this phase_ - [doi:10.1016/0364-5916(81)90037-7](https://doi.org/10.1016/0364-5916%2881%2990037-7) K.E. Spear, M.S. Wang, Thermodynamic modelling of the molybdenumeboron system, Calphad 5 (2) (1981) 109e113. _cited as the source of values for this phase_ - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _cited as the source of values for this phase_ - [doi:10.1016/s0925-8388(00)01258-5](https://doi.org/10.1016/s0925-8388%2800%2901258-5) M. Morishita, K. Koyama, S. Yagi, G. Zhang, Calculated phase diagram of the Ni–Mo–B ternary system, Journal of Alloys and Compounds 314, 212-218 (2001). _cited as the source of values for this phase_ ## MOB_BG (B–Mo) - Id: `phase:b-mo:mob-bg`; status `assigned` - Structure: MoB · B_g · tI16 · I4_1/amd (141); type `st:b-g-mob-ti16`; tier A: standard phase name; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 300–2454.33 K, x(B) 0.48305–0.50165 - Literature: 18 values (18 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:mob-bg) Names (3): _corpus: _corpus:phase:b-mo:mob-bg _paper: _paper:10.1016/j.jallcom.2015.09.158:αMoB _tdb: _tdb:MoB-16Wit.tdb:MOB_BG ### TDB models of MOB_BG (1): PHASE and CONSTITUENT statements as written [MoB-16Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-16Wit.tdb): MOB_BG, type code %, sha256 `36161abf7ae35139…` ~~~~text 50: PHASE MOB_BG % 2 1 1 ! 51: CONST MOB_BG : MO% VA : B% VA : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1016/j.jallcom.2015.09.158](https://doi.org/10.1016/j.jallcom.2015.09.158) V.T. Witusiewicz, A.A. Bondar, U. Hecht, O.A. Potazhevska, T.Ya Velikanova, Thermodynamic modelling of the ternary B–Mo–Ti system with refined B–Mo description, Journal of Alloys and Compounds 655, 336-352 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0364-5916(81)90037-7](https://doi.org/10.1016/0364-5916%2881%2990037-7) K.E. Spear, M.S. Wang, Thermodynamic modelling of the molybdenumeboron system, Calphad 5 (2) (1981) 109e113. _cited as the source of values for this phase_ - [doi:10.1021/j100519a008](https://doi.org/10.1021/j100519a008) Edmund Storms, Barbara Mueller, Phase relations and thermodynamic properties of transition metal borides. I. The molybdenum-boron system and elemental boron., J. Phys. Chem. 81, 318-324 (1977). _cited as the source of values for this phase_ - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _cited as the source of values for this phase_ ## MOB2_C32 (B–Mo) - Id: `phase:b-mo:mob2-c32`; status `needs_review` - No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_C32; stoichiometry_contradicts_C32:MoB-91Pan-LB.tdb - Candidate (literature_printed): AlB2 · hP3 — printed with a label mapped to this phase - Candidate (name_token): AlB2 · C32 · hP3 · P6/mmm (191) — Strukturbericht/word 'C32' in the TDB name - Candidate (sgte_mmc2): AlB2 · C32 · hP3 · P6/mmm (191) — Hallstedt 2025 mmc2 row for MOB2_C32: Mo19B31 - Candidate (sgte_mmc2): AlB2 · C32 · hP3 · P6/mmm (191) — Hallstedt 2025 mmc2 row for MOB2_C32: MoB2 - Candidate (tdb_comment): AlB2 · hP3 · P6/mmm — MoB-05Yan.tdb: 'Prototype AlB2 (hP3, P6/mmm)' - Candidate (tdb_comment): AlB2 · hP3 · P6/mmm — MoB-16Wit.tdb: 'Prototype AlB2 (hP3, P6/mmm)' - Candidate (tdb_comment): AlB2 · hP3 · P6/mmm — MoB-91Pan-LB.tdb: 'Prototype AlB2 (hP3, P6/mmm)' - Stability: stable in 3 of 3 calculated diagram(s): 1764.31–2653.79 K, x(B) 0.61453–0.66137 - Literature: 25 values (25 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:mob2-c32) Names (5): _corpus: _corpus:phase:b-mo:mob2-c32 _paper: _paper:10.1016/j.jallcom.2015.09.158:MoB2 _tdb: _tdb:MoB-05Yan.tdb:MOB2_C32, tdb:MoB-16Wit.tdb:MOB2_C32, tdb:MoB-91Pan-LB.tdb:MOB2_C32 ### TDB models of MOB2_C32 (3): PHASE and CONSTITUENT statements as written [MoB-05Yan.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-05Yan.tdb): MOB2_C32, type code %, sha256 `70d1d12bc57b9f23…` ~~~~text 59: PHASE MOB2_C32 % 2 1 2 ! 60: CONST MOB2_C32 : MO : B% VA : ! ~~~~ [MoB-16Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-16Wit.tdb): MOB2_C32, type code %, sha256 `36161abf7ae35139…` ~~~~text 60: PHASE MOB2_C32 % 2 1 2 ! 61: CONST MOB2_C32 : MO% B : MO B% : ! ~~~~ [MoB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-91Pan-LB.tdb): MOB2_C32, type code %, sha256 `ad22665acf03099e…` ~~~~text 57: PHASE MOB2_C32 % 2 19 31 ! 58: CONST MOB2_C32 : MO : B : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.jallcom.2015.09.158](https://doi.org/10.1016/j.jallcom.2015.09.158) V.T. Witusiewicz, A.A. Bondar, U. Hecht, O.A. Potazhevska, T.Ya Velikanova, Thermodynamic modelling of the ternary B–Mo–Ti system with refined B–Mo description, Journal of Alloys and Compounds 655, 336-352 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.intermet.2004.06.007](https://doi.org/10.1016/j.intermet.2004.06.007) Y. Yang, Y.A. Chang, Thermodynamic modeling of the Mo–Si–B system, Intermetallics 13, 121-128 (2005). _assessment that models this phase_ - [doi:10.1016/0364-5916(81)90037-7](https://doi.org/10.1016/0364-5916%2881%2990037-7) K.E. Spear, M.S. Wang, Thermodynamic modelling of the molybdenumeboron system, Calphad 5 (2) (1981) 109e113. _cited as the source of values for this phase_ - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _cited as the source of values for this phase_ - [doi:10.1021/j100519a008](https://doi.org/10.1021/j100519a008) Edmund Storms, Barbara Mueller, Phase relations and thermodynamic properties of transition metal borides. I. The molybdenum-boron system and elemental boron., J. Phys. Chem. 81, 318-324 (1977). _cited as the source of values for this phase_ ## MOB2_D8I (B–Mo) - Id: `phase:b-mo:mob2-d8i`; status `needs_review` - No structure assigned. Why: stoichiometry_contradicts_D8_i:MoB-20Tak.tdb - Candidate (dft_mp): R-3m (166) — on-hull MP B2Mo at x(MO)=0.3333 - Candidate (dft_oqmd): R-3m (166) — on-hull OQMD B2 Mo1 at x(MO)=0.3333 - Candidate (name_token): Mo2B5 · D8_i · hR7 · R-3m (166) — Strukturbericht/word 'D8I' in the TDB name - Candidate (sgte_mmc2): Mo2B5 · D8_i · hR7 · R-3m (166) — Hallstedt 2025 mmc2 row for MOB2_D8I: MoB2/Mo2B5 - Candidate (tdb_comment): Mo2B5 (or MoB2) · hR6 · R-3m — MoB-20Tak.tdb: 'Prototype Mo2B5 (or MoB2) (hR6, R-3m)' - Stoichiometry: B 0.6667, Mo 0.3333 - Stability: stable in 1 of 1 calculated diagram(s): 300–2423.32 K, x(B) 0.66667–0.66667 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:mob2-d8i) Names (2): _corpus: _corpus:phase:b-mo:mob2-d8i _tdb: _tdb:MoB-20Tak.tdb:MOB2_D8I ### TDB models of MOB2_D8I (1): PHASE and CONSTITUENT statements as written [MoB-20Tak.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-20Tak.tdb): MOB2_D8I, type code %, sha256 `3d8f0c60fb6fc085…` ~~~~text 77: PHASE MOB2_D8I % 2 1 2 ! 78: CONST MOB2_D8I : MO : B : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.2355/tetsutohagane.TETSU-2019-097](https://doi.org/10.2355/tetsutohagane.TETSU-2019-097) K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020). _assessment that models this phase_ ## MOB4 (B–Mo) - Id: `phase:b-mo:mob4`; status `assigned` - Structure: MoB4 · hP16 · P6_3/mmc (194); type `st:mob4-hp16`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated - Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system - Stability: stable in 5 of 5 calculated diagram(s): 300–2087.99 K, x(B) 0.8–0.81156 - Literature: 3 values (3 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:b-mo:mob4) Names (7): _corpus: _corpus:phase:b-mo:mob4 _paper: _paper:10.1016/j.jallcom.2015.09.158:Mo1-xB3 _tdb: _tdb:MoB-05Yan.tdb:MOB4, tdb:MoB-09Yam.tdb:MOB4, tdb:MoB-16Wit.tdb:MOB4, tdb:MoB-20Tak.tdb:MOB4, tdb:MoB-91Pan-LB.tdb:MOB4 ### TDB models of MOB4 (5): PHASE and CONSTITUENT statements as written [MoB-05Yan.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-05Yan.tdb): MOB4, type code %, sha256 `70d1d12bc57b9f23…` ~~~~text 69: PHASE MOB4 % 2 1 4 ! 70: CONST MOB4 : MO : B : ! ~~~~ [MoB-09Yam.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-09Yam.tdb): MOB4, type code %, sha256 `cb515d628eb00bec…` ~~~~text 84: PHASE MOB4 % 2 1 4 ! 85: CONST MOB4 : MO : B : ! ~~~~ [MoB-16Wit.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-16Wit.tdb): MOB4, type code %, sha256 `36161abf7ae35139…` ~~~~text 70: PHASE MOB4 % 2 1 4 ! 71: CONST MOB4 : MO% VA : B% VA : ! ~~~~ [MoB-20Tak.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-20Tak.tdb): MOB4, type code %, sha256 `3d8f0c60fb6fc085…` ~~~~text 82: PHASE MOB4 % 2 1 4 ! 83: CONST MOB4 : MO : B : ! ~~~~ [MoB-91Pan-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MoB-91Pan-LB.tdb): MOB4, type code %, sha256 `ad22665acf03099e…` ~~~~text 67: PHASE MOB4 % 2 1 4 ! 68: CONST MOB4 : MO : B : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.jallcom.2015.09.158](https://doi.org/10.1016/j.jallcom.2015.09.158) V.T. Witusiewicz, A.A. Bondar, U. Hecht, O.A. Potazhevska, T.Ya Velikanova, Thermodynamic modelling of the ternary B–Mo–Ti system with refined B–Mo description, Journal of Alloys and Compounds 655, 336-352 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.2320/jinstmet.73.180](https://doi.org/10.2320/jinstmet.73.180) Kenta Yamada, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the Mo-Nb-B Ternary Phase Diagram, J. Japan Inst. Metals 73, 180-188 (2009). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1016/j.intermet.2004.06.007](https://doi.org/10.1016/j.intermet.2004.06.007) Y. Yang, Y.A. Chang, Thermodynamic modeling of the Mo–Si–B system, Intermetallics 13, 121-128 (2005). _assessment that models this phase_ - [doi:10.2355/tetsutohagane.TETSU-2019-097](https://doi.org/10.2355/tetsutohagane.TETSU-2019-097) K. Takahashi, K. Ishikawa, M. Fujioka, M. Enoki, H. Ohtani, Tetsu-to-Hagane, 106, 310-20(2020). _assessment that models this phase_ - [doi:10.1016/0364-5916(81)90037-7](https://doi.org/10.1016/0364-5916%2881%2990037-7) K.E. Spear, M.S. Wang, Thermodynamic modelling of the molybdenumeboron system, Calphad 5 (2) (1981) 109e113. _cited as the source of values for this phase_ ## Please cite - R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735970 - R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23736065 Also cite B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes. ```bibtex @misc{orchid_phase_registry_2026, author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon}, title = {{ORCHID-Registry: phase registry of binary systems}}, version = {2026.10}, publisher = {Zenodo}, year = {2026}, doi = {10.5281/zenodo.23735970}, url = {https://doi.org/10.5281/zenodo.23735970}, note = {Version 1, machine-extracted} } @misc{orchid_data_2026, author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon}, title = {{ORCHID data: umbrella record of the ORCHID datasets}}, version = {2026.10}, publisher = {Zenodo}, year = {2026}, doi = {10.5281/zenodo.23736065}, url = {https://doi.org/10.5281/zenodo.23736065}, note = {Version 1, machine-extracted} } ``` --- Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).