# B–C–Ti system

> B–C–Ti system: 32 accepted literature values (invariant reaction 28, crystal structure 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-C-TI.html · Markdown: https://data.orchid-project.org/systems/B-C-TI.md

32 accepted literature values from 1 paper(s) (experimental 12, model 18, unspecified 2); 0 calculated phase diagram(s).

Data: [JSON](https://data.orchid-project.org/literature/systems/B-C-TI.json) · [CSV](https://data.orchid-project.org/systems/B-C-TI.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#B-C-TI) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/B-C-TI.html) · [Markdown](https://data.orchid-project.org/systems/B-C-TI.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 12 |
| model | 18 |
| unspecified | 2 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 28 |
| crystal structure | 4 |

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the B–C–Ti system (28)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 3046.15 | eutectic: L -> TiC1-x + C | L: C 0.651; TiC1-x: C 0.485; C: C 1 | model | [1] Duschanek 1995; _cites Jonsson 1992_ | Table 1, p. 3, row 14; `ORC-ROZKDJVTZP` |  |
| 2916.15 | other: L \<-> TiB2 + TiC1-x | L: B 0.339, C 0.22, Ti 0.441; TiB2: B 0.667, C 0, Ti 0.333; TiC1-x: B 0.032, C 0.427, Ti 0.541 | model | [1] Duschanek 1995 | Table 4, p. 8, row 2; `ORC-XTT36K224N` |  |
| 2893.15 | other: L \<-> TiB2 + TiC1-x | L: B 0.31, C 0.24, Ti 0.45; TiB2: B 0.63, Ti 0.34; TiC1-x: B 0.06, C 0.41, Ti 0.53 | experimental | [1] Duschanek 1995; _cites ref. 66Rud_ | Table 4, p. 8, row 1; `ORC-7UZ2BMFQRG` |  |
| 2780.15 | other: L \<-> TiB2 + C | L: B 0.45, C 0.32, Ti 0.23; TiB2: B 0.64, Ti 0.34; C: B 0.02 | experimental | [1] Duschanek 1995; _cites ref. 66Rud_ | Table 4, p. 8, row 3; `ORC-MTAJMJKYIR` |  |
| 2729.15 | other: L \<-> TiB2 + C | L: B 0.446, C 0.332, Ti 0.222; TiB2: B 0.667, C 0, Ti 0.333; C: B 0.007, C 0.993, Ti 0 | model | [1] Duschanek 1995 | Table 4, p. 8, row 4; `ORC-IY6FIDMZOQ` |  |
| 2673.15 | eutectic: L \<-> TiB2 + TiC1-x + C | L: B 0.37, C 0.34, Ti 0.29; TiB2: B 0.64, Ti 0.34; TiC1-x: B 0.02, C 0.46, Ti 0.52 | experimental | [1] Duschanek 1995; _cites ref. 66Rud_ | Table 4, p. 8, row 5; `ORC-HYD7M5OM3X` |  |
| 2667.15 | eutectic: L \<-> TiB2 + TiC1-x + C | L: B 0.335, C 0.377, Ti 0.288; TiB2: B 0.333, C 0, Ti 0.667; TiC1-x: B 0.006, C 0.482, Ti 0.512; C: B 0.003, C 0.997, Ti 0 | model | [1] Duschanek 1995 | Table 4, p. 8, row 6; `ORC-B4E4UDJOLH` |  |
| 2654.15 | other: L \<-> TiB2 + B4C | L: B 0.811, C 0.11, Ti 0.079; TiB2: B 0.667, C 0, Ti 0.333; B4C: B 0.855, C 0.145, Ti 0 | model | [1] Duschanek 1995 | Table 4, p. 8, row 8; `ORC-IETNDBGJ6H` |  |
| 2648.15 | eutectic: L -> B4C + C | L: C 0.291; B4C: C 0.185; C: C 0.982 | model | [1] Duschanek 1995; _cites Kasper 1994_ | Table 1, p. 3, row 2; `ORC-RNHEZ2QCP6` |  |
| 2583.15 | other: L \<-> TiB2 + B4C | L: B 0.8, C 0.15, Ti 0.05; TiB2: B 0.65; B4C: B 0.82, C 0.17 | experimental | [1] Duschanek 1995; _cites ref. 66Rud_ | Table 4, p. 8, row 7; `ORC-6WL3MQ25HZ` |  |
| 2519.15 | eutectic: L \<-> TiB2 + B4C + C | L: B 0.641, C 0.26, Ti 0.099; TiB2: B 0.667, C 0, Ti 0.333; B4C: B 0.814, C 0.186, Ti 0; C: B 0.98, C 0.02, Ti 0 | model | [1] Duschanek 1995 | Table 4, p. 8, row 10; `ORC-WO34K2X2OH` |  |
| 2513.15 | eutectic: L \<-> TiB2 + B4C + C | L: B 0.62, C 0.28, Ti 0.1; TiB2: Ti 0.34; B4C: B 0.8; C: B 0.03 | experimental | [1] Duschanek 1995; _cites ref. 66Rud_ | Table 4, p. 8, row 9; `ORC-VZLMST3354` |  |
| 2471.15 | peritectic: L + TiB2 -> Ti3B4 | L: B 0.377; TiB2: B 0.667; Ti3B4: B 0.571 | model | [1] Duschanek 1995; _cites Baetzner 1994_ | Table 1, p. 3, row 6; `ORC-XGJKCH3DQZ` |  |
| 2457.15 | peritectic: L + Ti3B4 -> TiB | L: B 0.374; Ti3B4: B 0.571; TiB: B 0.5 | model | [1] Duschanek 1995; _cites Baetzner 1994_ | Table 1, p. 3, row 7; `ORC-34APOJNEZN` |  |
| 2453.15 | quasi-peritectic: L + TiB2 \<-> Ti3B4 + TiC1-x | L: B 0.345, C 0.075, Ti 0.58; TiB2: Ti 0.34; Ti3B4: B 0.57, C 0, Ti 0.43; TiC1-x: B 0.04, C 0.32, Ti 0.64 | experimental | [1] Duschanek 1995; _cites ref. 66Rud_ | Table 4, p. 8, row 11; `ORC-USI7JHBPS5` |  |
| 2433.15 | quasi-peritectic: L + Ti3B4 \<-> TiB + TiC1-x | L: B 0.34, C 0.07, Ti 0.59; Ti3B4: B 0.57, C 0, Ti 0.43; TiB: B 0.48, Ti 0.5; TiC1-x: B 0.04, C 0.32, Ti 0.64 | experimental | [1] Duschanek 1995; _cites ref. 66Rud_ | Table 4, p. 8, row 13; `ORC-VYOF735YI7` |  |
| 2394.15 | quasi-peritectic: L + TiB2 \<-> Ti3B4 + TiC1-x | L: B 0.312, C 0.044, Ti 0.644; TiB2: B 0.667, C 0, Ti 0.333; Ti3B4: B 0.571, C 0, Ti 0.429; TiC1-x: B 0.052, C 0.323, Ti 0.625 | model | [1] Duschanek 1995 | Table 4, p. 8, row 12; `ORC-2OB3AWJHCH` |  |
| 2386.15 | quasi-peritectic: L + Ti3B4 \<-> TiB + TiC1-x | L: B 0.31, C 0.044, Ti 0.646; Ti3B4: B 0.571, C 0, Ti 0.429; TiB: B 0.5, C 0, Ti 0.5; TiC1-x: B 0.323, C 0.051, Ti 0.626 | model | [1] Duschanek 1995 | Table 4, p. 8, row 14; `ORC-W33CLFOXPY` |  |
| 2346.15 | eutectic: L -> B + B4C | L: C 0.002; B: C 0; B4C: C 0.081 | model | [1] Duschanek 1995; _cites Kasper 1994_ | Table 1, p. 3, row 4; `ORC-MFNIZTEC3J` |  |
| 2332.15 | eutectic: L -> TiB2 + B | L: B 0.981; TiB2: B 0.667; B: B 1 | model | [1] Duschanek 1995; _cites Baetzner 1994_ | Table 1, p. 3, row 9; `ORC-QVHBSE6ZWA` |  |
| 2331.15 | eutectic: L \<-> TiB2 + B4C + B | L: B 0.979, C 0.002, Ti 0.019; TiB2: B 0.667, C 0, Ti 0.333; B4C: B 0.919, C 0.081, Ti 0; B: B 1, C 0, Ti 0 | model | [1] Duschanek 1995 | Table 4, p. 8, row 16; `ORC-LOHMG3AWD3` |  |
| 2289.15 | eutectic: L \<-> TiB2 + B4C + B | L: B 0.97, C 0.015, Ti 0.015; TiB2: B 0.66, C 0.01, Ti 0.33; B4C: C 0.11; B: B 0.99 | experimental | [1] Duschanek 1995; _cites ref. 66Rud_ | Table 4, p. 8, row 15; `ORC-RXSZEB2R6G` |  |
| 1925.15 | eutectic: L -> βTi + TiC1-x | L: C 0.031; βTi: C 0.026; TiC1-x: C 0.313 | model | [1] Duschanek 1995; _cites Jonsson 1992_ | Table 1, p. 3, row 16; `ORC-2Z7MSWAZXZ` |  |
| 1814.15 | eutectic: L -> βTi + TiB | L: B 0.069; βTi: B 0.002; TiB: B 0.5 | model | [1] Duschanek 1995; _cites Baetzner 1994_ | Table 1, p. 3, row 11; `ORC-PDWOTQIVLJ` |  |
| 1808.15 | eutectic: L \<-> betaTi + TiB + TiC1-x | L: B 0.066, C 0.022, Ti 0.912; betaTi: B 0.001, C 0.021, Ti 0.978; TiB: B 0.5, C 0, Ti 0.5; TiC1-x: B 0.017, C 0.302, Ti 0.681; βTi: B 0.001, C 0.021, Ti 0.978 | model | [1] Duschanek 1995 | Table 4, p. 8, row 18; `ORC-VEDW454MTE` |  |
| 1783.15 | eutectic: L \<-> betaTi + TiB + TiC1-x | L: B 0.05, C 0.02, Ti 0.93; betaTi: B 0.01, C 0.01; TiB: Ti 0.51; TiC1-x: B 0.02, C 0.3, Ti 0.68; βTi: B 0.01, C 0.01 | experimental | [1] Duschanek 1995; _cites ref. 66Rud_ | Table 4, p. 8, row 17; `ORC-QL5KBZBMAQ` |  |
| 1200.15 | quasi-peritectic: betaTi + TiC1-x \<-> TiB + alphaTi | betaTi: B 0.001, C 0.004, Ti 0.995; TiC1-x: B 0.001, C 0.344, Ti 0.655; TiB: B 0.5, C 0, Ti 0.5; alphaTi: B 0, C 0.021, Ti 0.979; βTi: B 0.001, C 0.004, Ti 0.995; αTi: B 0, C 0.021, Ti 0.979 | model | [1] Duschanek 1995 | Table 4, p. 8, row 20; `ORC-VKETPSPIY2` |  |
| 1163.15 | quasi-peritectic: betaTi + TiC1-x \<-> TiB + alphaTi |  | experimental | [1] Duschanek 1995; _cites ref. 66Rud_ | Table 4, p. 8, row 19; `ORC-KHUX5BG6OA` |  |

## Other properties

### Crystal structure (4)

Table: Crystal structure, B–C–Ti system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Lattice a | 8.876 Å | 298.15 | Ti1.86B48C2; _alloy: C 0.038565, Ti 0.035866_ | unspecified | [1] Duschanek 1995; _cites ref. 80Amb_ | Table 3, p. 4, row 67; `ORC-6YV77FOMH5.979230` |  |
| Lattice a | 8.876 Å | 298.15 | Ti1.86B48C2; _alloy: C 0.038565, Ti 0.035866_ | experimental | [1] Duschanek 1995; _cites ref. 80Amb_ | Table 3, p. 5, row 39; `ORC-PFYMR3Q666.8aef2a` |  |
| Lattice c | 5.062 Å | 298.15 | Ti1.86B48C2; _alloy: C 0.038565, Ti 0.035866_ | unspecified | [1] Duschanek 1995; _cites ref. 80Amb_ | Table 3, p. 4, row 67; `ORC-6YV77FOMH5.d0004d` |  |
| Lattice c | 5.062 Å | 298.15 | Ti1.86B48C2; _alloy: C 0.038565, Ti 0.035866_ | experimental | [1] Duschanek 1995; _cites ref. 80Amb_ | Table 3, p. 5, row 39; `ORC-PFYMR3Q666.1209b3` |  |

## Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

1. H. Duschanek, P. Rogl, H. L. Lukas, A critical assessment and thermodynamic calculation of the boron-carbon-titanium (B-C-Ti) ternary system, JPE 16, 46-60 (1995). [doi:10.1007/bf02646248](https://doi.org/10.1007/bf02646248)

## 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=\<id>, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).