{
  "counts": {
    "above_hull": 0,
    "entries": 5,
    "intervals": 4,
    "vertices": 5
  },
  "elements": [
    "CO",
    "W"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "CO": {
          "energy": -8956.44933703856,
          "phase": "HCP_A3"
        },
        "W": {
          "energy": -9724.926761518629,
          "phase": "BCC_A2"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -30835.859935786622
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -10.766402455806793
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "HCP_A3",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -27625.857043587854,
          "right": {
            "phase": "CO3W_D019",
            "x": 0.2499999953940074
          },
          "slope": -27625.857043587854,
          "x_hi": 0.2499999953940074,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -7708.964841916913,
                1.1193769716579285,
                0.11086964591202575,
                -0.055147590955748615
              ]
            ],
            "knots": [
              0.2499999953940074,
              0.25003355070085137
            ],
            "max_abs_error": 0.007916804048363701
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -7.367115061095761,
                0.004092710385071924,
                -0.0021367109285459684,
                0.0009295729782823536
              ]
            ],
            "knots": [
              0.2499999953940074,
              0.25003355070085137
            ],
            "max_abs_error": 9.951955380405053e-05
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -5512.459486451219,
              -0.1008646293086274,
              0.7479300083878228,
              -0.33229977390056986
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.2499999953940074,
            0.25003355070085137
          ],
          "max_abs_error": 0.03752671546590136,
          "phase": "CO3W_D019",
          "x_hi": 0.25003355070085137,
          "x_lo": 0.2499999953940074
        },
        {
          "enthalpy": {
            "intercept": -10849.460498727602,
            "slope": 12564.996765558482
          },
          "entropy": {
            "intercept": -5.560081912899353,
            "slope": 11.485152270890131
          },
          "intercept": -9191.722076396663,
          "kind": "two_phase",
          "left": {
            "phase": "CO3W_D019",
            "x": 0.25003355070085137
          },
          "mu_a_rel": -9191.722076396663,
          "mu_b_rel": -51.023460404072466,
          "right": {
            "phase": "MU_D85",
            "x": 0.46153853012783547
          },
          "slope": 9140.698615992591,
          "x_hi": 0.46153853012783547,
          "x_lo": 0.25003355070085137
        },
        {
          "enthalpy": {
            "intercept": -9379.000435610928,
            "slope": 9379.000435610928
          },
          "entropy": {
            "intercept": -0.48144877582400936,
            "slope": 0.48144877582400936
          },
          "intercept": -9235.456483099006,
          "kind": "two_phase",
          "left": {
            "phase": "MU_D85",
            "x": 0.46153853012783547
          },
          "mu_a_rel": -9235.456483099006,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "BCC_A2",
            "x": 1.0
          },
          "slope": 9235.456483099006,
          "x_hi": 1.0,
          "x_lo": 0.46153853012783547
        }
      ],
      "temperature_K": 298.15,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": 0.0,
          "enthalpy": 0.0,
          "entries_at_x": 1,
          "entropy": 0.0,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -6906.464133652471,
          "energy_per_atom": -6906.464133652471,
          "enthalpy": -7708.964841916913,
          "entries_at_x": 1,
          "entropy": -2.6916005643617282,
          "formula": "",
          "nsites": null,
          "phase": "CO3W_D019",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.2499999953940074
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -6906.240745553678,
          "energy_per_atom": -6906.240745553678,
          "enthalpy": -7707.789742890301,
          "entries_at_x": 1,
          "entropy": -2.688408510268747,
          "formula": "",
          "nsites": null,
          "phase": "CO3W_D019",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.25003355070085137
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -4972.937472829903,
          "energy_per_atom": -4972.937472829903,
          "enthalpy": -5050.230360490732,
          "entries_at_x": 1,
          "entropy": -0.25924161549835034,
          "formula": "",
          "nsites": null,
          "phase": "MU_D85",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.46153853012783547
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": 0.0,
          "enthalpy": 0.0,
          "entries_at_x": 1,
          "entropy": 0.0,
          "formula": "",
          "nsites": null,
          "phase": "BCC_A2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 1.0
        }
      ]
    }
  ],
  "mp_agreement": {
    "comparable": false,
    "comparable_note": "CALPHAD isotherms have no upstream stability flag to compare against",
    "max_abs_delta_energy_above_hull": 0.0,
    "only_mp_stable": [],
    "only_ours_stable": [],
    "stable_sets_match": true
  },
  "provenance": {
    "assessment": "CoW-17Wan",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:27:24Z",
    "phase_families": {},
    "sample_conditions": {
      "endpoint_tol": 1.0,
      "fit_samples": 65,
      "order_tol": 0.0001,
      "pressure_Pa": 101325.0,
      "redundant_tol": 1.0,
      "refine_tol": 1e-07,
      "step": 0.002,
      "temperature_K": 298.15
    },
    "source_path": "databases/sgte-binary/CoW-17Wan.tdb",
    "source_sha256": "4b8a669596d303a441ff7ea39364afbb047a3f425061812980a500b4a93e3d8a"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "CO-W",
  "x_element": "W"
}
