# Al–O–Ti system > Al–O–Ti system: 28 accepted literature values (phase equilibrium 14, invariant reaction 14) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/AL-O-TI.html · Markdown: https://data.orchid-project.org/systems/AL-O-TI.md 28 accepted literature values from 1 paper(s) (experimental 23, model 3, unspecified 2); 0 calculated phase diagram(s). Data: [JSON](https://data.orchid-project.org/literature/systems/AL-O-TI.json) · [CSV](https://data.orchid-project.org/systems/AL-O-TI.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#AL-O-TI) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/AL-O-TI.html) · [Markdown](https://data.orchid-project.org/systems/AL-O-TI.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | experimental | 23 | | model | 3 | | unspecified | 2 | Table: Accepted values by property group | Property group | Values | |---|---:| | invariant reaction | 14 | | phase equilibrium | 14 | ## Invariant reactions (literature) Table: Invariant reactions reported in the literature for the Al–O–Ti system (14) | T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote | |---:|---|---|---|---|---|---| | 2123 | peritectic: L + Al2O3 -> Al2TiO5 | | experimental | [1] Ilatovskaia 2017 | Table 3, p. 8, row 10; `ORC-5A7EOUHPRI` | | | 2123 | eutectic: L -> Al2O3 + Al2TiO5 | | experimental | [1] Ilatovskaia 2017; _cites Bunting 1933_ [doi](https://doi.org/10.6028/jres.011.049) | Table 3, p. 8, row 7; `ORC-NLZXHM77MU` | | | 2113 | eutectic: L -> Al2O3 + Al2TiO5 | | experimental | [1] Ilatovskaia 2017; _cites Lang 1952_ [doi](https://doi.org/10.6028/jres.048.038) | Table 3, p. 8, row 8; `ORC-I34QEJROYV` | | | 2112 | peritectic: L + Al2O3 -> Al2TiO5 | | model | [1] Ilatovskaia 2017 | Table 3, p. 8, row 9; `ORC-ODRYP7IWZG` | | | 1999 | eutectic: L -> TiO2 + Al2TiO5 | | model | [1] Ilatovskaia 2017 | Table 3, p. 8, row 1; `ORC-QPOWL5CMVP` | | | 1988 | eutectic: L -> TiO2 + Al2TiO5 | | experimental | [1] Ilatovskaia 2017; _cites Bunting 1933_ [doi](https://doi.org/10.6028/jres.011.049) | Table 3, p. 8, row 3; `ORC-D5AMZPSAZH` | | | 1988 | eutectic: L -> TiO2 + Al2TiO5 | | experimental | [1] Ilatovskaia 2017 | Table 3, p. 8, row 2; `ORC-ZO7ZZGB35X` | | | 1978 | eutectic: L -> TiO2 + Al2TiO5 | | experimental | [1] Ilatovskaia 2017; _cites Lang 1952_ [doi](https://doi.org/10.6028/jres.048.038) | Table 3, p. 8, row 4; `ORC-Q6XSU52JQ6` | | | 1623 | eutectoid: Al2TiO5 -> TiO2 + Al2O3 | | unspecified | [1] Ilatovskaia 2017; _cites Preda 2000_ | Table 3, p. 8, row 15; `ORC-WS6DDGSDPS` | | | 1553 | eutectoid: Al2TiO5 -> TiO2 + Al2O3 | | experimental | [1] Ilatovskaia 2017 | Table 3, p. 8, row 12; `ORC-3DRBVKDTIZ` | | | 1553 | eutectoid: Al2TiO5 -> TiO2 + Al2O3 | | unspecified | [1] Ilatovskaia 2017; _cites Kato 1980_ | Table 3, p. 8, row 14; `ORC-QMM24CSL54` | | | 1552 | eutectoid: Al2TiO5 -> TiO2 + Al2O3 | | model | [1] Ilatovskaia 2017 | Table 3, p. 8, row 11; `ORC-J52UNH5L6E` | | | 1533 | eutectoid: Al2TiO5 -> TiO2 + Al2O3 | | experimental | [1] Ilatovskaia 2017; _cites Lang 1952_ [doi](https://doi.org/10.6028/jres.048.038) | Table 3, p. 8, row 13; `ORC-7JMQW322SK` | | | 1513 | eutectoid: Al2TiO5 -> TiO2 + Al2O3 | | experimental | [1] Ilatovskaia 2017; _cites Slepetys 1969_ [doi](https://doi.org/10.1021/j100727a010) | Table 3, p. 8, row 16; `ORC-4I7R7SOBOY` | | ## Other properties ### Phase equilibrium (14) Table: Phase equilibrium, Al–O–Ti system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Phase assemblage | | 1333 | C + R; _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 1; `ORC-BPAWZPI6ZJ` | | | Phase assemblage | | 1423 | C + R; _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 2; `ORC-KJVBTQ45Y2` | | | Phase assemblage | | 1487 | C + R; _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 3; `ORC-S7T77G7OWT` | | | Phase assemblage | | 1523 | C + R; _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 4; `ORC-HAIZIFSJOU` | | | Phase assemblage | | 1538 | C + R; _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 5; `ORC-5X3GGXX2MG` | | | Phase assemblage | | 1549 | C + R; _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 6; `ORC-V56XY3I442` | | | Phase assemblage | | 1557 | R + T + (+C); _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 7; `ORC-BSBDUHP4PR` | | | Phase assemblage | | 1557 | T + C + R; _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 9; `ORC-HOCFJUR3OF` | | | Phase assemblage | | 1570 | T + R + C; _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 10; `ORC-N4XKWB3JZK` | | | Phase assemblage | | 1897 | R + T; _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 11; `ORC-NENK5DGV7J` | | | Phase assemblage | | 1897 | T + (+C); _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 13; `ORC-LGN5JK4H7I` | | | Phase assemblage | | 1897 | T + C; _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 14; `ORC-HYHGZRS3RX` | | | Phase assemblage | | 2023 | T + C; _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 17; `ORC-GBNY5C6TLW` | | | Phase assemblage | | 2113 | T + C; _alloy: O 0, Ti 1_ | experimental | [1] Ilatovskaia 2017 | Table 1, p. 2, row 20; `ORC-U3WYSZ442Q` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. Mariia Ilatovskaia, Galina Savinykh, Olga Fabrichnaya, Thermodynamic Description of the Ti-Al-O System Based on Experimental Data, J. Phase Equilib. Diffus. 38, 175-184 (2017). [doi:10.1007/s11669-016-0509-4](https://doi.org/10.1007/s11669-016-0509-4) ## 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/).