C–Si phases

8 phases (tier A 6, liquid 1, gas 1); 6 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 · full JSON · C–Si system page · Markdown · field reference

Phases of the C–Si system (8)
PhaseStructureBasisStability (calculated)Literature valuesTDB models
DIAMOND_A4
phase:c-si:a4-diamond
C (diamond) · A4 · cF8 · Fd-3m (227)tier A: standard phase namestable in 4 of 4 calculated diagram(s): 300–1917.01 K, x(C) 0–0.0071804
GRAPHITE_A9
phase:c-si:a9-graphite
C (graphite) · A9 · hP4 · P6_3/mmc (194)tier A: standard phase namestable in 4 of 4 calculated diagram(s): 300–4000 K, x(C) 1–104
BCC_A2
phase:c-si:bcc-a2
W · A2 · cI2 · Im-3m (229)tier A: standard phase namestable in 4 of 4 calculated diagram(s): 3152.46–4000 K, x(C) 0.43527–0.5753304
FCC_A1
phase:c-si:fcc-a1
Cu · A1 · cF4 · Fm-3m (225)tier A: standard phase namenot stable in 4 calculated diagram(s)04
GAS
phase:c-si:gas
gasgasstable in 1 of 1 calculated diagram(s): 3216.4–4000 K, x(C) 0–101
HCP_A3
phase:c-si:hcp-a3
Mg · A3 · hP2 · P6_3/mmc (194)tier A: standard phase namenot stable in 4 calculated diagram(s)04
LIQUID
phase:c-si:liquid
liquidliquidstable in 4 of 4 calculated diagram(s): 1682.01–4000 K, x(C) 0–0.5598124
SIC_B3
phase:c-si:sic-b3
ZnS (sphalerite) · B3 · cF8 · F-43m (216)tier A: standard phase namestable in 4 of 4 calculated diagram(s): 300–3096.52 K, x(C) 0.5–0.554

DIAMOND_A4 (C–Si)

Names (5): corpus: corpus:phase:c-si:a4-diamond
tdb: tdb:SiC-17Lia.tdb:DIAMOND_A4, tdb:SiC-20Jia.tdb:DIAMOND_A4, tdb:SiC-91Lac.tdb:DIAMOND_A4, tdb:SiC-96Gro-LB.tdb:DIAMOND_A4

TDB models of DIAMOND_A4 (4): PHASE and CONSTITUENT statements as written

SiC-17Lia.tdb: DIAMOND_A4, type code %, sha256 566c3667592d6971…

69: PHASE DIAMOND_A4 % 1 1 !
70: CONST DIAMOND_A4 : C SI% : !

SiC-20Jia.tdb: DIAMOND_A4, type code %, sha256 e34192cf4fb738bc…

48: PHASE DIAMOND_A4 % 1 1 !
49: CONST DIAMOND_A4 : C SI% : !

SiC-91Lac.tdb: DIAMOND_A4, type code %, sha256 950f9545294ceb88…

48: PHASE DIAMOND_A4 % 1 1 !
49: CONST DIAMOND_A4 : C SI% : !

SiC-96Gro-LB.tdb: DIAMOND_A4, type code %, sha256 eab9b0ae0cc5d451…

49: PHASE DIAMOND_A4 % 1 1 !
50: CONST DIAMOND_A4 : C SI% : !

Example references (4 of 4; assessments first):

GRAPHITE_A9 (C–Si)

Names (5): corpus: corpus:phase:c-si:a9-graphite
tdb: tdb:SiC-17Lia.tdb:GRAPHITE_A9, tdb:SiC-20Jia.tdb:GRAPHITE_A9, tdb:SiC-91Lac.tdb:GRAPHITE_A9, tdb:SiC-96Gro-LB.tdb:GRAPHITE_A9

TDB models of GRAPHITE_A9 (4): PHASE and CONSTITUENT statements as written

SiC-17Lia.tdb: GRAPHITE_A9, type code %, sha256 566c3667592d6971…

74: PHASE GRAPHITE_A9 % 1 1 !
75: CONST GRAPHITE_A9 : C : !

SiC-20Jia.tdb: GRAPHITE_A9, type code %, sha256 e34192cf4fb738bc…

53: PHASE GRAPHITE_A9 % 1 1 !
54: CONST GRAPHITE_A9 : C : !

SiC-91Lac.tdb: GRAPHITE_A9, type code %, sha256 950f9545294ceb88…

53: PHASE GRAPHITE_A9 % 1 1 !
54: CONST GRAPHITE_A9 : C : !

SiC-96Gro-LB.tdb: GRAPHITE_A9, type code %, sha256 eab9b0ae0cc5d451…

54: PHASE GRAPHITE_A9 % 1 1 !
55: CONST GRAPHITE_A9 : C : !

Example references (4 of 4; assessments first):

BCC_A2 (C–Si)

Names (5): corpus: corpus:phase:c-si:bcc-a2
tdb: tdb:SiC-17Lia.tdb:BCC_A2, tdb:SiC-20Jia.tdb:BCC_A2, tdb:SiC-91Lac.tdb:BCC_A2, tdb:SiC-96Gro-LB.tdb:BCC_A2

TDB models of BCC_A2 (4): PHASE and CONSTITUENT statements as written

SiC-17Lia.tdb: BCC_A2, type code %B, sha256 566c3667592d6971…

59: PHASE BCC_A2 %B 2 1 3 !
60: CONST BCC_A2 : SI : C VA% : !

SiC-20Jia.tdb: BCC_A2, type code %B, sha256 e34192cf4fb738bc…

38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : SI : C VA% : !

SiC-91Lac.tdb: BCC_A2, type code %B, sha256 950f9545294ceb88…

38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : SI : C VA% : !

SiC-96Gro-LB.tdb: BCC_A2, type code %B, sha256 eab9b0ae0cc5d451…

39: PHASE BCC_A2 %B 2 1 3 !
40: CONST BCC_A2 : SI : C VA% : !

Example references (4 of 4; assessments first):

FCC_A1 (C–Si)

Names (5): corpus: corpus:phase:c-si:fcc-a1
tdb: tdb:SiC-17Lia.tdb:FCC_A1, tdb:SiC-20Jia.tdb:FCC_A1, tdb:SiC-91Lac.tdb:FCC_A1, tdb:SiC-96Gro-LB.tdb:FCC_A1

TDB models of FCC_A1 (4): PHASE and CONSTITUENT statements as written

SiC-17Lia.tdb: FCC_A1, type code %A, sha256 566c3667592d6971…

54: PHASE FCC_A1 %A 2 1 1 !
55: CONST FCC_A1 : SI : C VA% : !

SiC-20Jia.tdb: FCC_A1, type code %A, sha256 e34192cf4fb738bc…

33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : SI : C VA% : !

SiC-91Lac.tdb: FCC_A1, type code %A, sha256 950f9545294ceb88…

33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : SI : C VA% : !

SiC-96Gro-LB.tdb: FCC_A1, type code %A, sha256 eab9b0ae0cc5d451…

34: PHASE FCC_A1 %A 2 1 1 !
35: CONST FCC_A1 : SI : C VA% : !

Example references (4 of 4; assessments first):

GAS (C–Si)

Names (2): corpus: corpus:phase:c-si:gas
tdb: tdb:SiC-17Lia.tdb:GAS

TDB models of GAS (1): PHASE and CONSTITUENT statements as written

SiC-17Lia.tdb: GAS, type code %, sha256 566c3667592d6971…

82: PHASE GAS:G % 1 1 !
83: CONST GAS:G : C C2 C3 C4 C5 C60 SI SI2 SI3 SIC SIC2 SI2C : !

Example references (1 of 1; assessments first):

HCP_A3 (C–Si)

Names (5): corpus: corpus:phase:c-si:hcp-a3
tdb: tdb:SiC-17Lia.tdb:HCP_A3, tdb:SiC-20Jia.tdb:HCP_A3, tdb:SiC-91Lac.tdb:HCP_A3, tdb:SiC-96Gro-LB.tdb:HCP_A3

TDB models of HCP_A3 (4): PHASE and CONSTITUENT statements as written

SiC-17Lia.tdb: HCP_A3, type code %, sha256 566c3667592d6971…

64: PHASE HCP_A3 % 2 1 0.5 !
65: CONST HCP_A3 : SI : C VA% : !

SiC-20Jia.tdb: HCP_A3, type code %, sha256 e34192cf4fb738bc…

43: PHASE HCP_A3 % 2 1 0.5 !
44: CONST HCP_A3 : SI : C VA% : !

SiC-91Lac.tdb: HCP_A3, type code %, sha256 950f9545294ceb88…

43: PHASE HCP_A3 % 2 1 0.5 !
44: CONST HCP_A3 : SI : C VA% : !

SiC-96Gro-LB.tdb: HCP_A3, type code %, sha256 eab9b0ae0cc5d451…

44: PHASE HCP_A3 % 2 1 0.5 !
45: CONST HCP_A3 : SI : C VA% : !

Example references (4 of 4; assessments first):

LIQUID (C–Si)

Names (6): corpus: corpus:phase:c-si:liquid
paper: paper:sha256-85fd53a1a176b694:Liquid
tdb: tdb:SiC-17Lia.tdb:LIQUID, tdb:SiC-20Jia.tdb:LIQUID, tdb:SiC-91Lac.tdb:LIQUID, tdb:SiC-96Gro-LB.tdb:LIQUID

TDB models of LIQUID (4): PHASE and CONSTITUENT statements as written

SiC-17Lia.tdb: LIQUID, type code %, sha256 566c3667592d6971…

49: PHASE LIQUID:L % 1 1 !
50: CONST LIQUID:L : C SI : !

SiC-20Jia.tdb: LIQUID, type code %, sha256 e34192cf4fb738bc…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : C SI : !

SiC-91Lac.tdb: LIQUID, type code %, sha256 950f9545294ceb88…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : C SI : !

SiC-96Gro-LB.tdb: LIQUID, type code %, sha256 eab9b0ae0cc5d451…

29: PHASE LIQUID:L % 1 1 !
30: CONST LIQUID:L : C SI : !

Example references (4 of 4; assessments first):

SIC_B3 (C–Si)

Names (6): corpus: corpus:phase:c-si:sic-b3
paper: paper:10.1016/j.jallcom.2016.12.271:SiC
tdb: tdb:SiC-17Lia.tdb:SIC_B3, tdb:SiC-20Jia.tdb:SIC_B3, tdb:SiC-91Lac.tdb:SIC_B3, tdb:SiC-96Gro-LB.tdb:SIC_B3

TDB models of SIC_B3 (4): PHASE and CONSTITUENT statements as written

SiC-17Lia.tdb: SIC_B3, type code %, sha256 566c3667592d6971…

79: PHASE SIC_B3 % 2 1 1 !
80: CONST SIC_B3 : SI : C : !

SiC-20Jia.tdb: SIC_B3, type code %, sha256 e34192cf4fb738bc…

58: PHASE SIC_B3 % 2 1 1 !
59: CONST SIC_B3 : SI : C : !

SiC-91Lac.tdb: SIC_B3, type code %, sha256 950f9545294ceb88…

58: PHASE SIC_B3 % 2 1 1 !
59: CONST SIC_B3 : SI : C : !

SiC-96Gro-LB.tdb: SIC_B3, type code %, sha256 eab9b0ae0cc5d451…

59: PHASE SIC_B3 % 2 1 1 !
60: CONST SIC_B3 : SI : C : !

Example references (5 of 5; assessments first):