# Ag–Pd system

> Ag–Pd system: 18 accepted literature values (mixing / partial 8, phase transition 5, phase equilibrium 5) and 4 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/AG-PD.html · Markdown: https://data.orchid-project.org/systems/AG-PD.md

18 accepted literature values from 2 paper(s) (experimental 10, model 8); 4 calculated phase diagram(s).

Data: [JSON](https://data.orchid-project.org/literature/systems/AG-PD.json) · [CSV](https://data.orchid-project.org/systems/AG-PD.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#AG-PD) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#AG-PD/AgPd-10Sop.json) · [phases (4)](https://data.orchid-project.org/phases/pages/AG-PD.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/AG-PD.html) · [Markdown](https://data.orchid-project.org/systems/AG-PD.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 10 |
| model | 8 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| phase transition | 5 |
| phase equilibrium | 5 |
| mixing / partial | 8 |

## Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Table: Assessments with a calculated phase diagram

| TDB file | Assessment | SHA-256 | Links |
|---|---|---|---|
| AgPd-10Sop.tdb | J. Sopousek, A. Zemanova, J. Vrestal, P. Broz, J. Alloys Compd., 504, 431-34(2010). [doi:10.1016/j.jallcom.2010.05.141](https://doi.org/10.1016/j.jallcom.2010.05.141) | `3000a173c9756cd597b52426fcf61b4f8605d3d390e32ac53efa4fcfb5684e96` | [viewer](https://orchid-project.org/phase-diagrams/#AG-PD/AgPd-10Sop.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AgPd-10Sop.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AgPd-10Sop.json) |
| AgPd-98Spe-LB.tdb | P.J. Spencer, unpublished, 1998. | `2fed28bb99cbf066fd40e50c39aef607c33d772ca871ca176195edd9da55643b` | [viewer](https://orchid-project.org/phase-diagrams/#AG-PD/AgPd-98Spe-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AgPd-98Spe-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AgPd-98Spe-LB.json) |
| AgPd-99Gho.tdb | G. Ghosh, C. Kantner, G.B. Olson, J. Phase Equilib., 20, 295-308(1999). [doi:10.1361/105497199770335811](https://doi.org/10.1361/105497199770335811) | `ab44297fb64b1b047f3ae0e460d4f21498bdfb8a2ae6665e72126a760d3dfef6` | [viewer](https://orchid-project.org/phase-diagrams/#AG-PD/AgPd-99Gho.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AgPd-99Gho.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AgPd-99Gho.json) |
| AgPd-99Mor.tdb | S. Morioka, M. Hasebe, J. Phase Equilib., 20, 244-57(1999). [doi:10.1361/105497199770335785](https://doi.org/10.1361/105497199770335785) | `9cf28cdbc447854a03acbe05f7ed88b455ca3958ee16fe7a07eb31ef06298606` | [viewer](https://orchid-project.org/phase-diagrams/#AG-PD/AgPd-99Mor.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AgPd-99Mor.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AgPd-99Mor.json) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/AG/AG-PD.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/AG/AG-PD.json) · [CALPHAD hull AgPd-98Spe-LB](https://data.orchid-project.org/hulls/calphad-sgte/AG/AG-PD--AgPd-98Spe-LB.json) · [CALPHAD hull AgPd-99Gho](https://data.orchid-project.org/hulls/calphad-sgte/AG/AG-PD--AgPd-99Gho.json) · [CALPHAD hull AgPd-99Mor](https://data.orchid-project.org/hulls/calphad-sgte/AG/AG-PD--AgPd-99Mor.json)

## Other properties

### Phase transition (5)

Table: Phase transition, Ag–Pd system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 1247.9 K | 1247.9 | other: Ag–6.62Pd; _alloy: Ag 0.9338, Pd 0.0662_ | experimental | [1] Sopoušek 2010 | Table 1, p. 2, row 1; `ORC-EGOJEUCTFA` |  |
| Phase transition | 1291.6 K | 1291.6 | other: Ag–12.86Pd; _alloy: Ag 0.8714, Pd 0.1286_ | experimental | [1] Sopoušek 2010 | Table 1, p. 2, row 3; `ORC-NZJZLQ2QIU` |  |
| Phase transition | 1328 K | 1328 | other: Ag–18.06Pd; _alloy: Ag 0.8194, Pd 0.1806_ | experimental | [1] Sopoušek 2010 | Table 1, p. 2, row 5; `ORC-LUDRDLYF7K` |  |
| Phase transition | 1375.6 K | 1375.6 | other: Ag–23.27Pd; _alloy: Ag 0.7673, Pd 0.2327_ | experimental | [1] Sopoušek 2010 | Table 1, p. 2, row 7; `ORC-OOA6RDELNG` |  |
| Phase transition | 1398.2 K | 1398.2 | other: Ag–25.92Pd; _alloy: Ag 0.7408, Pd 0.2592_ | experimental | [1] Sopoušek 2010 | Table 1, p. 2, row 9; `ORC-F4OBT6ZUHZ` |  |

### Phase equilibrium (5)

Table: Phase equilibrium, Ag–Pd system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase composition |  | 1277.5 | other: Ag–6.62Pd; _liquid: Ag 0.9338, Pd 0.0662_ | experimental | [1] Sopoušek 2010 | Table 1, p. 2, row 2; `ORC-WQUJMDHKPT` |  |
| Phase composition |  | 1325 | other: Ag–12.86Pd; _liquid: Ag 0.8714, Pd 0.1286_ | experimental | [1] Sopoušek 2010 | Table 1, p. 2, row 4; `ORC-JPOQZF7MLA` |  |
| Phase composition |  | 1372 | other: Ag–18.06Pd; _liquid: Ag 0.8194, Pd 0.1806_ | experimental | [1] Sopoušek 2010 | Table 1, p. 2, row 6; `ORC-2VED5MBCCT` |  |
| Phase composition |  | 1418.4 | other: Ag–23.27Pd; _liquid: Ag 0.7673, Pd 0.2327_ | experimental | [1] Sopoušek 2010 | Table 1, p. 2, row 8; `ORC-O3ACEPEPCP` |  |
| Phase composition |  | 1441.1 | other: Ag–25.92Pd; _liquid: Ag 0.7408, Pd 0.2592_ | experimental | [1] Sopoušek 2010 | Table 1, p. 2, row 10; `ORC-ST4YCFGF3U` |  |

### Mixing / partial (8)

Table: Mixing / partial, Ag–Pd system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Enthalpy of mixing; _printed: \|ΔmixH\| (X_Ag = 0.5)_ | 5.949 kJ/mol (basis unstated) | 1200.15 | fcc | model | [2] Morioka 1999 | Table 2, p. 5, row 9; `ORC-5HZECXLX2I` |  |
| Enthalpy of mixing; _printed: \|ΔmixH\| (X_Ag = 0.5)_ | 1.52 kJ/mol (basis unstated) | 1200.15 | fcc | model | [2] Morioka 1999 | Table 2, p. 5, row 7; `ORC-F7VLUIRQRU` |  |
| Enthalpy of mixing; _printed: \|ΔmixH\| (X_Ag = 0.5)_ | 4.584 kJ/mol (basis unstated) | 1200.15 | fcc | model | [2] Morioka 1999 | Table 2, p. 5, row 11; `ORC-MYEPXK4Z4Z` |  |
| Enthalpy of mixing; _printed: \|ΔmixH\| (X_Ag = 0.5)_ | 4.522 kJ/mol (basis unstated) | 1200.15 | fcc | model | [2] Morioka 1999; _cites Morioka 1999_ | Table 2, p. 5, row 12; `ORC-ZJA7CAS4MF` |  |
| Enthalpy of mixing; _printed: \|ΔmixH\| (X_Ag = 0.5)_ | 1.942 kJ/mol (basis unstated) | 1850.15 | Liquid | model | [2] Morioka 1999; _cites Morioka 1999_ | Table 2, p. 5, row 6; `ORC-3OXUVNGLD7` |  |
| Enthalpy of mixing; _printed: \|ΔmixH\| (X_Ag = 0.5)_ | 4.067 kJ/mol (basis unstated) | 1850.15 | Liquid | model | [2] Morioka 1999 | Table 2, p. 5, row 5; `ORC-65P3HQGG4O` |  |
| Enthalpy of mixing; _printed: \|ΔmixH\| (X_Ag = 0.5)_ | 3.641 kJ/mol (basis unstated) | 1850.15 | Liquid | model | [2] Morioka 1999 | Table 2, p. 5, row 2; `ORC-7QUMFXSA6R` |  |
| Enthalpy of mixing; _printed: \|ΔmixH\| (X_Ag = 0.5)_ | 1.049 kJ/mol (basis unstated) | 1850.15 | Liquid | model | [2] Morioka 1999 | Table 2, p. 5, row 1; `ORC-ZKOV5UC5FA` |  |

## Sources

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

1. Jiří Sopoušek, A. Zemanová, J. Vřešťál, P. Brož, Experimental determination of phase equilibria and reassessment of Ag–Pd system, Journal of Alloys and Compounds 504, 431-434 (2010). [doi:10.1016/j.jallcom.2010.05.141](https://doi.org/10.1016/j.jallcom.2010.05.141)
2. S. Morioka, M. Hasebe, Thermodynamic constraints to describe gibbs energies for binary alloys, JPE 20, 244-257 (1999). [doi:10.1361/105497199770335785](https://doi.org/10.1361/105497199770335785)

## 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-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735859
- R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735891
- 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_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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/).
