# B–Fe–Nd system > B–Fe–Nd system: 26 accepted literature values (invariant reaction 22, activity / EMF / Gibbs energy 4) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/B-FE-ND.html · Markdown: https://data.orchid-project.org/systems/B-FE-ND.md 26 accepted literature values from 2 paper(s) (experimental 4, model 15, unspecified 7); 0 calculated phase diagram(s). Data: [JSON](https://data.orchid-project.org/literature/systems/B-FE-ND.json) · [CSV](https://data.orchid-project.org/systems/B-FE-ND.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#B-FE-ND) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/B-FE-ND.html) · [Markdown](https://data.orchid-project.org/systems/B-FE-ND.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | experimental | 4 | | model | 15 | | unspecified | 7 | Table: Accepted values by property group | Property group | Values | |---|---:| | invariant reaction | 22 | | activity / EMF / Gibbs energy | 4 | ## Invariant reactions (literature) Table: Invariant reactions reported in the literature for the B–Fe–Nd system (22) | T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote | |---:|---|---|---|---|---|---| | 1684.15 | peritectic: L + NdB4 -> T2 | L: B 0.29, Fe 0.62, Nd 0.09 | model | [1] Hallemans 1995 | Table 6, p. 10, row 1; `ORC-BAZA6OXALT` | | | 1661.15 | quasi-peritectic: L + FeB -> NdB4 + Fe2B | L: B 0.32, Fe 0.66, Nd 0.02 | model | [1] Hallemans 1995 | Table 6, p. 10, row 3; `ORC-4PATAASWM2` | | | 1648.15 | quasi-peritectic: L + NdB4 -> Fe2B + T2 | L: B 0.31, Fe 0.66, Nd 0.03 | model | [1] Hallemans 1995 | Table 6, p. 10, row 6; `ORC-NKI3RWJEAP` | | | 1618.15 | peritectic: L + NdB4 -> T2 | L: B 0.4, Fe 0.45, Nd 0.15 | experimental | [1] Hallemans 1995; _cites Knoch 1994_ | Table 6, p. 10, row 2; `ORC-DK4PFCLESV` | | | 1454.15 | peritectic: L + γ -> T1 | L: B 0.088, Fe 0.732, Nd 0.169 | model | [1] Hallemans 1995 | Table 6, p. 10, row 9; `ORC-FJ7UDL2IKY` | | | 1453.15 | peritectic: L + γ -> T1 | | unspecified | [1] Hallemans 1995; _cites ref. 87Tsa_ | Table 6, p. 10, row 12; `ORC-OSNDZBK4SP` | | | 1453.15 | peritectic: L + γ -> T1 | L: B 0.08, Fe 0.76, Nd 0.16 | unspecified | [1] Hallemans 1995; _cites ref. 86Sch_ | Table 6, p. 10, row 11; `ORC-ZCTPXHWKY4` | | | 1443.15 | quasi-peritectic: L + γ -> T1 + Fe17Nd2 | L: B 0.06, Fe 0.71, Nd 0.23 | model | [1] Hallemans 1995 | Table 6, p. 10, row 14; `ORC-4HR4P3USCY` | | | 1428.15 | peritectic: L + γ -> T1 | L: B 0.07, Fe 0.79, Nd 0.14 | experimental | [1] Hallemans 1995; _cites Matsuura 1985_ [doi](https://doi.org/10.1143/jjap.24.l635) | Table 6, p. 10, row 10; `ORC-QIPQQB5UMO` | | | 1403.15 | quasi-peritectic: L + γ -> T1 + Fe17Nd2 | L: B 0.02, Fe 0.66, Nd 0.32 | unspecified | [1] Hallemans 1995; _cites ref. 86Sch_ | Table 6, p. 10, row 16; `ORC-ES4D6VMAXX` | | | 1390.15 | eutectic: L -> T1 + T2 | L: B 0.16, Fe 0.72, Nd 0.12 | model | [1] Hallemans 1995 | Table 6, p. 10, row 17; `ORC-Z2PCFCQLKM` | | | 1388.15 | eutectic: L -> T1 + T2 | L: B 0.17, Fe 0.73, Nd 0.1 | unspecified | [1] Hallemans 1995; _cites ref. 86Sch_ | Table 6, p. 10, row 18; `ORC-6LHRNOSQ3T` | | | 1383.15 | eutectic: L -> Fe2B + T1 | L: B 0.18, Fe 0.75, Nd 0.07 | unspecified | [1] Hallemans 1995; _cites ref. 86Sch_ | Table 6, p. 10, row 20; `ORC-YR3EAAV3WV` | | | 1382.15 | eutectic: L -> Fe2B + T1 | L: B 0.163, Fe 0.764, Nd 0.073 | model | [1] Hallemans 1995 | Table 6, p. 10, row 19; `ORC-HMSMNS3QUB` | | | 1382.15 | eutectic: L -> Fe2B + T1 + T2 | L: B 0.163, Fe 0.763, Nd 0.074 | model | [1] Hallemans 1995 | Table 6, p. 10, row 21; `ORC-TKJD7CDGV2` | | | 1381.15 | eutectic: L -> Fe2B + T1 + γ | L: B 0.16, Fe 0.78, Nd 0.06 | model | [1] Hallemans 1995 | Table 6, p. 10, row 23; `ORC-TZSG3JDNGO` | | | 1378.15 | eutectic: L -> Fe2B + T1 + γ | L: B 0.17, Fe 0.76, Nd 0.07 | unspecified | [1] Hallemans 1995; _cites ref. 86Sch_ | Table 6, p. 10, row 24; `ORC-7W5H44UU5L` | | | 1368.15 | eutectic: L -> Fe2B + T1 + T2 | L: B 0.2, Fe 0.72, Nd 0.08 | unspecified | [1] Hallemans 1995; _cites ref. 86Sch_ | Table 6, p. 10, row 22; `ORC-DZSK4R54OY` | | | 1018.15 | quasi-peritectic: L + T3 -> ε + T2 | | experimental | [1] Hallemans 1995; _cites Knoch 1994_ | Table 6, p. 10, row 27; `ORC-AOKO5IF4B7` | | | 983.15 | quasi-peritectic: L + T2 -> ε + T1 | L: B 0.02, Fe 0.23, Nd 0.75 | experimental | [1] Hallemans 1995; _cites EJ 1991_ | Table 6, p. 10, row 29; `ORC-ZA5W7DKI4Q` | | | 975.15 | quasi-peritectic: L + T3 -> ε + T2 | L: B 0.01, Fe 0.22, Nd 0.77 | model | [1] Hallemans 1995 | Table 6, p. 10, row 25; `ORC-3YZ3GUICJY` | | | 958.15 | quasi-peritectic: L + T2 -> ε + T1 | L: B 0.01, Fe 0.23, Nd 0.76 | model | [1] Hallemans 1995 | Table 6, p. 10, row 28; `ORC-E74RYR3G2B` | | ## Other properties ### Activity / EMF / Gibbs energy (4) Table: Activity / EMF / Gibbs energy, B–Fe–Nd system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Gibbs energy; _printed: Gibbs Energies of System_ | -50915.3 J/mol | 953 | Fe2B + T2 + α-Fe; _alloy: B 0.18, Fe 0.77, Nd 0.05_ | model | [2] Zhou 2016 | Table III, p. 6, row 4; `ORC-WQ4U7G3ZPM` | | | Gibbs energy; _printed: Gibbs Energies of System_ | -50245.7 J/mol | 953 | Fe3B + Fe23Nd2B3; _alloy: B 0.18, Fe 0.77, Nd 0.05_ | model | [2] Zhou 2016 | Table III, p. 6, row 1; `ORC-ZBX6EQ7YOJ` | | | Gibbs energy; _printed: Gibbs Energies of System_ | -50492.9 J/mol | 953 | Fe3B + Fe23Nd2B3 + T2 + α-Fe; _alloy: B 0.18, Fe 0.77, Nd 0.05_ | model | [2] Zhou 2016 | Table III, p. 6, row 2; `ORC-EK2TIRXDNM` | | | Gibbs energy; _printed: Gibbs Energies of System_ | -50673.8 J/mol | 953 | Fe3B + T2 + α-Fe; _alloy: B 0.18, Fe 0.77, Nd 0.05_ | model | [2] Zhou 2016 | Table III, p. 6, row 3; `ORC-N26ZUHVFFC` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. B. Hallemans, P. Wollants, J. R. Roos, Thermodynamic assessment of the Fe-Nd-B phase diagram, JPE 16, 137-149 (1995). [doi:10.1007/bf02664851](https://doi.org/10.1007/bf02664851) 2. G. J. Zhou, Y. Luo, Y. Zhou, Thermodynamic Reassessment of the Nd-Fe-B Ternary System, Journal of Elec Materi 45, 418-425 (2016). [doi:10.1007/s11664-015-4112-y](https://doi.org/10.1007/s11664-015-4112-y) ## Please cite - R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735569 - 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 the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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). 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_literature_2026, author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon}, title = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}}, version = {2026.10}, publisher = {Zenodo}, year = {2026}, doi = {10.5281/zenodo.23735569}, url = {https://doi.org/10.5281/zenodo.23735569}, 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 ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).