{"artifacts":{"doi:10.1016/j.calphad.2012.04.005/p1/text-16":{"artifact":"text_passage","label":"page 1, passage 16","page":1},"doi:10.1016/j.calphad.2012.04.005/p2/text-02":{"artifact":"text_passage","label":"page 2, passage 2","page":2},"doi:10.1016/j.calphad.2012.04.005/p4/tab-1":{"artifact":"table","caption":"Lattice parameters of Hf, W, and HfW 2 calculated by first-principles from this work compared to experimental values and calculations by Wang et al. [28].","label":"1","page":4},"doi:10.1016/j.calphad.2012.04.005/p4/text-04":{"artifact":"text_passage","label":"page 4, passage 4","page":4},"doi:10.1016/j.calphad.2012.04.005/p6/text-07":{"artifact":"text_passage","label":"page 6, passage 7","page":6},"sha256:b64dbafe6e410a5c/p5/tab-1":{"artifact":"table","caption":"Comparison of the assessed enthalpies of formation �H m of the HfM 2 compounds with data from the literature","label":"1","page":5}},"cite_as":{"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)"],"bibtex":"@misc{orchid_literature_2026,\n  author    = {Arr{\\'o}yave, Raymundo and Saal, James and Shin, Dongwon},\n  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},\n  version   = {2026.10},\n  publisher = {Zenodo},\n  year      = {2026},\n  doi       = {10.5281/zenodo.23735569},\n  url       = {https://doi.org/10.5281/zenodo.23735569},\n  note      = {Version 1, machine-extracted}\n}","dataset":"literature","doi":"10.5281/zenodo.23735569","license":"CC-BY-4.0","part_of":{"bibtex":"@misc{orchid_data_2026,\n  author    = {Arr{\\'o}yave, Raymundo and Saal, James and Shin, Dongwon},\n  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},\n  version   = {2026.10},\n  publisher = {Zenodo},\n  year      = {2026},\n  doi       = {10.5281/zenodo.23736065},\n  url       = {https://doi.org/10.5281/zenodo.23736065},\n  note      = {Version 1, machine-extracted}\n}","doi":"10.5281/zenodo.23736065","text":"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","title":"ORCHID data: umbrella record of the ORCHID datasets","url":"https://doi.org/10.5281/zenodo.23736065"},"release_tag":"v2026.10","status":"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.","text":"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","title":"ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature","url":"https://doi.org/10.5281/zenodo.23735569","version":"2026.10"},"contexts":{},"elements":["HF","W"],"licence":"CC BY 4.0 (ORCHID data; quotes are short excerpts kept for verification, the publishers' copyright, not relicensed)","models":{},"note":"records[].locator.ref -> artifacts; records[].model -> models (full records: orchid-literature.jsonl.gz)","papers":{"doi:10.1016/0364-5916(86)90010-6":{"citation":"Lee SK, Lee DN. CALPHAD 1986;10:61.","doi":"10.1016/0364-5916(86)90010-6","doi_url":"https://doi.org/10.1016/0364-5916(86)90010-6","id":"doi:10.1016/0364-5916(86)90010-6","kind":"cited_work","metadata_source":"printed_reference","roles":["cited_source"],"source_kinds":["cited_work"]},"doi:10.1016/j.calphad.2012.04.005":{"authors":["Alyson C. Lieser","Chelsey L. Zacherl","Arkapol Saengdeejing","Zi-Kui Liu","Laszlo J. Kecskes"],"citation":"Alyson C. Lieser, Chelsey L. Zacherl, Arkapol Saengdeejing, Zi-Kui Liu, Laszlo J. Kecskes, First-principles calculations and thermodynamic re-modeling of the Hf–W system, Calphad 38, 92-99 (2012).","container":"Calphad","doi":"10.1016/j.calphad.2012.04.005","doi_url":"https://doi.org/10.1016/j.calphad.2012.04.005","id":"doi:10.1016/j.calphad.2012.04.005","kind":"corpus_paper","metadata_source":"crossref","pdf_sha256_prefix":"5658afd7952facd4","roles":["reporting_paper"],"source_kinds":["journal_article"],"title":"First-principles calculations and thermodynamic re-modeling of the Hf–W system","year":2012},"doi:10.1016/s0966-9795(02)00017-1":{"authors":["G. Shao"],"citation":"G. Shao, Thermodynamic assessment of the Hf–Mo and Hf–W systems, Intermetallics 10, 429-434 (2002).","container":"Intermetallics","doi":"10.1016/s0966-9795(02)00017-1","doi_url":"https://doi.org/10.1016/s0966-9795(02)00017-1","id":"doi:10.1016/s0966-9795(02)00017-1","kind":"corpus_paper","metadata_source":"crossref","pdf_sha256_prefix":"b64dbafe6e410a5c","roles":["reporting_paper"],"source_kinds":["journal_article"],"title":"Thermodynamic assessment of the Hf–Mo and Hf–W systems","year":2002}},"part":1,"parts":1,"records":[{"chemical_system":"HF-W","conditions":{"kind":"not_applicable_own_calculation"},"evidence_class":"dft","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","specification_gaps":["state:T_K_explicit","state:computation_context","temperature not stated"],"state_fully_specified":false},"fold_lpo":4,"fold_lso":2,"id":"ORC-EHQ7B7BI7N","locator":{"ref":"doi:10.1016/j.calphad.2012.04.005/p4/tab-1","row":10},"method":"first-principles","method_basis":"printed in the table row/column","observation_type":"structural_property","origin":{"basis":"this_work+label_first_principles","class":"computed","measured_in":"doi:10.1016/j.calphad.2012.04.005","own_work_of_paper":true},"overall_composition":{"W":0.666667},"overall_composition_basis":"from_formula","paper":"doi:10.1016/j.calphad.2012.04.005","paper_id":"doi:10.1016/j.calphad.2012.04.005","phases":[{"label":"HfW2"}],"pid":"doi:10.1016/j.calphad.2012.04.005/p4/tab-1/r10#structural_property","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"unstated_assumed","property":"LATTICE_A","property_group":"crystal structure","reader_agreement":"multi_reader","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"general_table","source_system":"HF-W","system":"HF-W","temperature_basis":"not_printed","tool_release":"tools-release-v2.1.18","uncertainty":{"basis":"reading_resolution","value":0.0005},"uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.07617,"sigma_method":{"basis":"prior","class":"dft","entry":"dft/priors/LATTICE_LENGTH","floor":0.01,"floor_unit":"relative (fraction of the value)","value":0.07617},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.0005},"sigma_scatter":null,"unit":"Å","value_type":"LATTICE_LENGTH"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"Å","unit_stored":"Å","value":7.617,"value_stored":7.617},{"chemical_system":"HF-W","cited_sources":[{"first_author":"Braun","kind":"unknown","label":"5","reference":"H. Braun, E. Rudy, Zum Aufbau des systems Hafnium–Wolfram, Z. Metallk 51 (1960) 360–363.","status":"resolved","year":"1960"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"experimental","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted"},"fold_lpo":4,"fold_lso":2,"id":"ORC-G4UU5D4VX4","locator":{"ref":"doi:10.1016/j.calphad.2012.04.005/p4/tab-1","row":11},"observation_type":"structural_property","origin":{"basis":"printed_source_experimental","class":"experimental","own_work_of_paper":false},"overall_composition":{"W":0.666667},"overall_composition_basis":"from_formula","paper":"doi:10.1016/j.calphad.2012.04.005","paper_id":"doi:10.1016/j.calphad.2012.04.005","phases":[{"label":"HfW2"}],"pid":"doi:10.1016/j.calphad.2012.04.005/p4/tab-1/r11#structural_property","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"unstated_assumed","property":"LATTICE_A","property_group":"crystal structure","reader_agreement":"multi_reader","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"general_table","source_system":"HF-W","system":"HF-W","temperature_K":298.15,"temperature_basis":"assumed_room_temperature","tool_release":"tools-release-v2.1.18","uncertainty":{"basis":"reading_resolution","value":0.0005},"uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":0.0167,"sigma_method":{"basis":"calibrated","ci95":[0.001793,0.002549],"class":"unknown","entry":"value_types/LATTICE_LENGTH/classes/unknown","floor":0.0022,"floor_unit":"relative (fraction of the value)","n_pairs":586,"value":0.0167},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.0005},"sigma_scatter":null,"unit":"Å","value_type":"LATTICE_LENGTH"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"Å","unit_stored":"Å","value":7.593,"value_stored":7.593},{"chemical_system":"HF-W","cited_sources":[{"doi":"10.1016/0364-5916(86)90010-6","first_author":"Lee","kind":"assessment","label":"10","paper":"doi:10.1016/0364-5916(86)90010-6","reference":"Lee SK, Lee DN. CALPHAD 1986;10:61.","status":"resolved","year":"1986"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"corrections":[{"after":"HF-W","before":"HF-MO-W","evidence":{"basis":"phase_formula","overall_composition":{"MO":0.0,"W":0.666667},"phases":["HfW2–15"]},"field":"system","gate":"A1","rule":"system_of_the_state"}],"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","specification_gaps":["reference-dependent quantity without a resolved reference state","state:T_K","state:reference_state","temperature not stated"],"state_fully_specified":false,"system_is_state_subsystem":true},"fold_lpo":0,"fold_lso":2,"id":"ORC-R3ASY5BJKP","locator":{"ref":"sha256:b64dbafe6e410a5c/p5/tab-1","row":1},"method":"CALPHAD","method_basis":"printed in the table row/column","model_unlinked_reason":"reporting paper's own calculation, but no TDB linked to the table","observation_type":"equilibrium_property","origin":{"basis":"printed_source_other_calculation","class":"model_value","own_work_of_paper":false},"overall_composition":{"W":0.666667},"overall_composition_basis":"from_formula","overall_composition_stored":{"MO":0.0,"W":0.666667},"paper":"doi:10.1016/s0966-9795(02)00017-1","paper_id":"doi:10.1016/s0966-9795(02)00017-1","phases":[{"label":"HfW2–15"}],"pid":"sha256:b64dbafe6e410a5c/p5/tab-1/r01#equilibrium_property","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"unstated_assumed","property":"HM_FORM","property_group":"formation","property_printed":"ΔHm","reader_agreement":"multi_reader","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"general_table","reference_state":{"HF":{"phase":"printed:none"},"W":{"phase":"printed:none"}},"reference_state_stored":{"HF":{"phase":"printed:none"},"MO":{"phase":"printed:none"},"W":{"phase":"printed:none"}},"source_system":"HF-MO-W","system":"HF-W","temperature_basis":"not_printed","tool_release":"tools-release-v2.1.18","uncertainty":{"basis":"stated_default","note":"5% default","value":0.15},"uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":3.9,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.54664],"class":"model_calculated","entry":"model/HM_FORM","floor":3.9,"floor_unit":"kJ/mol-atom","n_pairs":2045,"value":3.9},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.5},"sigma_scatter":null,"unit":"kJ/mol-atom","value_type":"HM_FORM"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"kJ/mol-atom","unit_basis":"column_header","unit_printed":"kJ/mol-atoms","unit_stored":"J/mol-atom","value":-3.0,"value_printed":-3,"value_stored":-3000.0},{"chemical_system":"HF-W","cited_sources":[{"kind":"assessment","label":"12","reference":"de Boer FR, Room R, Mattens WCM, Miedema AR, Niessen AK. Cohesion in metals—transition metal alloys. North-Holland: Elsevier Sci. Publ, 1989.","status":"resolved","year":"1989"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"corrections":[{"after":"HF-W","before":"HF-MO-W","evidence":{"basis":"phase_formula","overall_composition":{"MO":0.0,"W":0.666667},"phases":["HfW2–15"]},"field":"system","gate":"A1","rule":"system_of_the_state"}],"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","specification_gaps":["reference-dependent quantity without a resolved reference state","state:T_K","state:reference_state","temperature not stated"],"state_fully_specified":false,"system_is_state_subsystem":true},"fold_lpo":0,"fold_lso":2,"id":"ORC-G4IYWBQVPV","locator":{"ref":"sha256:b64dbafe6e410a5c/p5/tab-1","row":2},"method":"Estimation","method_basis":"printed in the table row/column","model_unlinked_reason":"reporting paper's own calculation, but no TDB linked to the table","observation_type":"equilibrium_property","origin":{"basis":"printed_source_other_calculation","class":"model_value","own_work_of_paper":false},"overall_composition":{"W":0.666667},"overall_composition_basis":"from_formula","overall_composition_stored":{"MO":0.0,"W":0.666667},"paper":"doi:10.1016/s0966-9795(02)00017-1","paper_id":"doi:10.1016/s0966-9795(02)00017-1","phases":[{"label":"HfW2–15"}],"pid":"sha256:b64dbafe6e410a5c/p5/tab-1/r02#equilibrium_property","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"unstated_assumed","property":"HM_FORM","property_group":"formation","property_printed":"ΔHm","reader_agreement":"multi_reader","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"general_table","reference_state":{"HF":{"phase":"printed:none"},"W":{"phase":"printed:none"}},"reference_state_stored":{"HF":{"phase":"printed:none"},"MO":{"phase":"printed:none"},"W":{"phase":"printed:none"}},"source_system":"HF-MO-W","system":"HF-W","temperature_basis":"not_printed","tool_release":"tools-release-v2.1.18","uncertainty":{"basis":"stated_default","note":"5% default","value":0.4},"uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":3.9,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.54664],"class":"model_calculated","entry":"model/HM_FORM","floor":3.9,"floor_unit":"kJ/mol-atom","n_pairs":2045,"value":3.9},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.5},"sigma_scatter":null,"unit":"kJ/mol-atom","value_type":"HM_FORM"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"kJ/mol-atom","unit_basis":"column_header","unit_printed":"kJ/mol-atoms","unit_stored":"J/mol-atom","value":-8.0,"value_printed":-8,"value_stored":-8000.0},{"chemical_system":"HF-W","conditions":{"kind":"not_applicable_own_calculation"},"corrections":[{"after":"HF-W","before":"HF-MO-W","evidence":{"basis":"phase_formula","overall_composition":{"MO":0.0,"W":0.666667},"phases":["HfW2–15"]},"field":"system","gate":"A1","rule":"system_of_the_state"}],"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":true,"review_state":"extracted","specification_gaps":["reference-dependent quantity without a resolved reference state","state:T_K","state:reference_state","temperature not stated"],"state_fully_specified":false,"system_is_state_subsystem":true},"fold_lpo":0,"fold_lso":2,"id":"ORC-ERH43UKWJO","locator":{"ref":"sha256:b64dbafe6e410a5c/p5/tab-1","row":3},"method":"CALPHAD","method_basis":"printed in the table row/column","model_unlinked_reason":"reporting paper's own calculation, but no TDB linked to the table","observation_type":"equilibrium_property","origin":{"basis":"this_work+label_names_calculation","class":"model_value","measured_in":"doi:10.1016/s0966-9795(02)00017-1","own_work_of_paper":true},"overall_composition":{"W":0.666667},"overall_composition_basis":"from_formula","overall_composition_stored":{"MO":0.0,"W":0.666667},"paper":"doi:10.1016/s0966-9795(02)00017-1","paper_id":"doi:10.1016/s0966-9795(02)00017-1","phases":[{"label":"HfW2–15"}],"pid":"sha256:b64dbafe6e410a5c/p5/tab-1/r03#equilibrium_property","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"unstated_assumed","property":"HM_FORM","property_group":"formation","property_printed":"ΔHm","reader_agreement":"multi_reader","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash+claude","readers":["claude-opus-5.5","gemini-3.8-flash","text_layer"],"record_kind":"general_table","reference_state":{"HF":{"phase":"printed:none"},"W":{"phase":"printed:none"}},"reference_state_stored":{"HF":{"phase":"printed:none"},"MO":{"phase":"printed:none"},"W":{"phase":"printed:none"}},"source_system":"HF-MO-W","system":"HF-W","temperature_basis":"not_printed","tool_release":"tools-release-v2.1.18","uncertainty":{"basis":"stated_default","note":"5% default","value":0.705},"uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":3.9,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.54664],"class":"model_calculated","entry":"model/HM_FORM","floor":3.9,"floor_unit":"kJ/mol-atom","n_pairs":2045,"value":3.9},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.05},"sigma_scatter":null,"unit":"kJ/mol-atom","value_type":"HM_FORM"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"kJ/mol-atom","unit_basis":"column_header","unit_printed":"kJ/mol-atoms","unit_stored":"J/mol-atom","value":-14.1,"value_printed":-14.1,"value_stored":-14100.0},{"chemical_system":"HF-W","citations_printed":["6"],"cited_sources":[{"first_author":"Rudy","kind":"unknown","label":"6","reference":"E. Rudy, Compendium of Phase Diagram Data, Air Force Materials Laboratory, Wright-Patterson Air Force Base, In, Ohio, 1969.","status":"resolved","year":"1969"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"experimental","flags":{"calphad_check":"not_available","dropped_field_count":1,"espei_certified":false,"espei_ready":false,"extraction_accepted":false,"gate_failures":["state_phases_missing"],"has_dropped_fields":true,"review_state":"extracted","second_reader":"done","value_in_quote":true},"fold_lpo":4,"fold_lso":2,"gate_failures":[{"code":"state_phases_missing","detail":"INVARIANT_TEMPERATURE without the phases of its state (reactions_in_quote:0)","effect":"not_accepted","gate":"R3"}],"id":"ORC-SUNWZDSVEH","link_rule":"quote verbatim on one page/passage + printed value inside quote","locator":{"ref":"doi:10.1016/j.calphad.2012.04.005/p1/text-16"},"observation_type":"phase_transition","origin":{"class":"experimental","own_work_of_paper":false},"paper":"doi:10.1016/j.calphad.2012.04.005","paper_id":"doi:10.1016/j.calphad.2012.04.005","pid":"doi:10.1016/j.calphad.2012.04.005/p1/text-16/s04#phase_transition","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","quote":"The Laves phase forms peritectically at 2785 K [6].","quote_page":1,"reaction":{"type":"peritectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash","readers":["claude-opus-5.5","gemini-3.8-flash"],"record_kind":"running_text","source_system":"HF-W","system":"HF-W","temperature_K":2785.0,"temperature_printed":"2785 K","tool_release":"release v2 + tools dev copy record build","transition_kind":"peritectic","transition_kind_printed":"peritectic","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.05},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":2785.0},{"chemical_system":"HF-W","citations_printed":["8"],"cited_sources":[{"first_author":"Ackerman","kind":"unknown","label":"8","reference":"R.J. Ackerman, E.G. Rauh, Determination of liquidus curves for the Th–W, Th– Ta, Zr–W, and Hf–W systems—anamolous behavior of metallic thorium, High Temp. Sci. 4 (1972) 272–282.","status":"resolved","year":"1972"}],"conditions":{"kind":"cited_source","note":"conditions in the cited source"},"evidence_class":"experimental","flags":{"calphad_check":"not_available","dropped_field_count":1,"espei_certified":false,"espei_ready":false,"extraction_accepted":false,"gate_failures":["state_phases_missing"],"has_dropped_fields":true,"review_state":"extracted","second_reader":"done","value_in_quote":true},"fold_lpo":4,"fold_lso":2,"gate_failures":[{"code":"state_phases_missing","detail":"INVARIANT_TEMPERATURE without the phases of its state (reactions_in_quote:0)","effect":"not_accepted","gate":"R3"}],"id":"ORC-CDXA5ERGBG","link_rule":"quote verbatim on one page/passage + printed value inside quote","locator":{"ref":"doi:10.1016/j.calphad.2012.04.005/p2/text-02"},"observation_type":"phase_transition","origin":{"class":"experimental","own_work_of_paper":false},"paper":"doi:10.1016/j.calphad.2012.04.005","paper_id":"doi:10.1016/j.calphad.2012.04.005","pid":"doi:10.1016/j.calphad.2012.04.005/p2/text-02/s14#phase_transition","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","quote":"The eutectic reaction happens at 2222 K and 18 at% W [8], and the eutectoid occurs at 7-8 at% W with a disagreement of 90 K about the reaction temperature [6-7].","quote_page":2,"reaction":{"type":"eutectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash","readers":["claude-opus-5.5","gemini-3.8-flash"],"record_kind":"running_text","source_system":"HF-W","system":"HF-W","temperature_K":2222.0,"temperature_printed":"2222 K","tool_release":"release v2 + tools dev copy record build","transition_kind":"eutectic","transition_kind_printed":"eutectic","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":11.0,"sigma_method":{"basis":"calibrated","ci95":[9.435209,10.483565],"class":"unknown","entry":"value_types/T_INVARIANT/classes/unknown","floor":11.0,"floor_unit":"K","n_pairs":4912,"value":11.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.05},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":2222.0},{"chemical_system":"HF-W","conditions":{"kind":"not_applicable_own_calculation"},"corrections":[{"after":298.15,"before":298.0,"evidence":{"printed":"298 K"},"field":"temperature_K","gate":"G1","rule":"standard_reference_temperature"}],"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":false,"gate_failures":["value_outside_typical_range_as_printed","state_phases_missing"],"magnitude_suspect":true,"quote_chars_original":519,"quote_clipped":true,"quote_original_sha256":"0c855ceb6b5c9b30","review_state":"proposed","second_reader":"done","value_in_quote":true},"fold_lpo":4,"fold_lso":2,"gate_failures":[{"code":"value_outside_typical_range_as_printed","detail":"HM_FORM = 71.302 kJ/mol-atom is outside [-200, 60]; the page prints it so","effect":"not_espei_ready","gate":"G2","visual_check":{"checked":"2026-10-23","image_sha256":"99925b2f9fbf28a1fae28734dfe53aac7a789b4b837fd0340f004254468f142e","page":4,"pdf_sha256_prefix":"5658afd7952facd4","seen":"Sec. 4 text: end-members of HfW2 Laves have highly positive enthalpies of formation at 298 K: 37,836 J/mol-atom HfHf2, '71,302 J/mol-atom for WHf2', 43,757 for WW2 (first-principles). Printed positive; hypothetical unstable end-member WHf2, not stable compound.","verdict":"as_stored"}},{"code":"state_phases_missing","detail":"HM_FORM without the phases of its state (compounds_in_quote:2)","effect":"not_accepted","gate":"R3"}],"id":"ORC-4PK7USTJBC.c49c7f","link_rule":"quote verbatim on one page/passage + printed value inside quote","locator":{"ref":"doi:10.1016/j.calphad.2012.04.005/p4/text-04"},"observation_type":"equilibrium_property","origin":{"attribution_note":"no printed citation: the paper's own statement","class":"model_value","measured_in":"doi:10.1016/j.calphad.2012.04.005","own_work_of_paper":true},"paper":"doi:10.1016/j.calphad.2012.04.005","paper_id":"doi:10.1016/j.calphad.2012.04.005","pid":"doi:10.1016/j.calphad.2012.04.005/p4/text-04/s09#equilibrium_property","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"HM_FORM","property_group":"formation","property_printed":"enthalpies of formation","quote":"(5), with the reference state of the pure elements as their ground state structures. For this case, the values of H are the enthalpies at 298 K. The calculated enthalpy of formation of the stable compound stoichiometric HfW2 is very negative (   16,738 J/mol-atom). The three end-members have highly positive enthalpies of formation: 37,836 J/mol-atom for HfHf2, 71,302 J/ mol-atom for WHf2, and 43,757 J/mol-K for WW2.","quote_page":4,"reader_agreement":"single_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"unconfirmed (single reader)","reader_tier":"preliminary_flash","readers":["gemini-3.8-flash"],"record_kind":"running_text","reference_state":{},"reference_state_stored":{"printed":"pure elements as their ground state structures"},"source_system":"HF-W","system":"HF-W","temperature_K":298.15,"temperature_K_stored":298.0,"temperature_printed":"298 K","tool_release":"release v2 + tools dev copy record build","uncertainty":{"basis":"stated_default","note":"10% placeholder; none printed","value":7.1302},"uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":3.9,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.54664],"class":"model_calculated","entry":"model/HM_FORM","floor":3.9,"floor_unit":"kJ/mol-atom","n_pairs":2045,"value":3.9},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.0005},"sigma_scatter":null,"unit":"kJ/mol-atom","value_type":"HM_FORM"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"kJ/mol-atom","unit_basis":"printed_unit","unit_stored":"J/ mol-atom","value":71.302,"value_stored":71302.0},{"chemical_system":"HF-W","conditions":{"kind":"not_applicable_own_calculation"},"corrections":[{"after":43.757,"before":43757.0,"evidence":{"printed":"43,757 J/mol-K for WW2"},"field":"value","gate":"page","rule":"read_from_page","visual_check":{"checked":"2026-10-24","image_sha256":"811d7c8167efd45a4dece8e77e725a8c4851b9f58964e685d4cb0e57015f9cb6","page":4,"pdf_sha256_prefix":"5658afd7952facd4","seen":"sentence lists 'enthalpies of formation: 37,836 J/mol-atom for HfHf2, 71,302 J/mol-atom for WHf2, and 43,757 J/mol-K for WW2'; 'J/mol-K' is a misprint for J/mol-atom (an enthalpy) -> 43.757 kJ/mol-atom. Unstable Laves end-member WW2 (first-principles, 298 K); phase label should be WW2 (C15/Laves en…","verdict":"corrected"}},{"after":"kJ/mol-atom","before":"J/mol-K","evidence":{"printed":"43,757 J/mol-K for WW2"},"field":"unit","gate":"page","rule":"read_from_page","visual_check":{"checked":"2026-10-24","image_sha256":"811d7c8167efd45a4dece8e77e725a8c4851b9f58964e685d4cb0e57015f9cb6","page":4,"pdf_sha256_prefix":"5658afd7952facd4","seen":"sentence lists 'enthalpies of formation: 37,836 J/mol-atom for HfHf2, 71,302 J/mol-atom for WHf2, and 43,757 J/mol-K for WW2'; 'J/mol-K' is a misprint for J/mol-atom (an enthalpy) -> 43.757 kJ/mol-atom. Unstable Laves end-member WW2 (first-principles, 298 K); phase label should be WW2 (C15/Laves en…","verdict":"corrected"}},{"after":298.15,"before":298.0,"evidence":{"printed":"298 K"},"field":"temperature_K","gate":"G1","rule":"standard_reference_temperature"}],"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":false,"gate_failures":["state_phases_missing"],"quote_chars_original":519,"quote_clipped":true,"quote_original_sha256":"0c855ceb6b5c9b30","review_state":"proposed","second_reader":"done","value_in_quote":true},"fold_lpo":4,"fold_lso":2,"gate_failures":[{"code":"state_phases_missing","detail":"HM_FORM without the phases of its state (compounds_in_quote:2)","effect":"not_accepted","gate":"R3"}],"id":"ORC-4PK7USTJBC.d56684","link_rule":"quote verbatim on one page/passage + printed value inside quote","locator":{"ref":"doi:10.1016/j.calphad.2012.04.005/p4/text-04"},"observation_type":"equilibrium_property","origin":{"attribution_note":"no printed citation: the paper's own statement","class":"model_value","measured_in":"doi:10.1016/j.calphad.2012.04.005","own_work_of_paper":true},"paper":"doi:10.1016/j.calphad.2012.04.005","paper_id":"doi:10.1016/j.calphad.2012.04.005","pid":"doi:10.1016/j.calphad.2012.04.005/p4/text-04/s09#equilibrium_property","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"HM_FORM","property_group":"formation","property_printed":"enthalpies of formation","quote":"(5), with the reference state of the pure elements as their ground state structures. For this case, the values of H are the enthalpies at 298 K. The calculated enthalpy of formation of the stable compound stoichiometric HfW2 is very negative (   16,738 J/mol-atom). The three end-members have highly positive enthalpies of formation: 37,836 J/mol-atom for HfHf2, 71,302 J/ mol-atom for WHf2, and 43,757 J/mol-K for WW2.","quote_page":4,"reader_agreement":"single_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"unconfirmed (single reader)","reader_tier":"preliminary_flash","readers":["gemini-3.8-flash"],"record_kind":"running_text","reference_state":{},"reference_state_stored":{"printed":"pure elements as their ground state structures"},"source_system":"HF-W","system":"HF-W","temperature_K":298.15,"temperature_K_stored":298.0,"temperature_printed":"298 K","tool_release":"release v2 + tools dev copy record build","uncertainty":{"basis":"stated_default","note":"10% placeholder; none printed","value":4375.7},"uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":3.9,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.54664],"class":"model_calculated","entry":"model/HM_FORM","floor":3.9,"floor_unit":"kJ/mol-atom","n_pairs":2045,"value":3.9},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.0005},"sigma_scatter":null,"unit":"kJ/mol-atom","value_type":"HM_FORM"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"kJ/mol-atom","unit_stored":"J/mol-K","value":43.757,"value_stored":43757.0},{"chemical_system":"HF-W","conditions":{"kind":"not_applicable_own_calculation"},"corrections":[{"after":298.15,"before":298.0,"evidence":{"printed":"298 K"},"field":"temperature_K","gate":"G1","rule":"standard_reference_temperature"}],"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":false,"gate_failures":["state_phases_missing"],"quote_chars_original":519,"quote_clipped":true,"quote_original_sha256":"0c855ceb6b5c9b30","review_state":"proposed","second_reader":"done","value_in_quote":true},"fold_lpo":4,"fold_lso":2,"gate_failures":[{"code":"state_phases_missing","detail":"HM_FORM without the phases of its state (compounds_in_quote:2)","effect":"not_accepted","gate":"R3"}],"id":"ORC-4PK7USTJBC.ea8901","link_rule":"quote verbatim on one page/passage + printed value inside quote","locator":{"ref":"doi:10.1016/j.calphad.2012.04.005/p4/text-04"},"observation_type":"equilibrium_property","origin":{"attribution_note":"no printed citation: the paper's own statement","class":"model_value","measured_in":"doi:10.1016/j.calphad.2012.04.005","own_work_of_paper":true},"paper":"doi:10.1016/j.calphad.2012.04.005","paper_id":"doi:10.1016/j.calphad.2012.04.005","pid":"doi:10.1016/j.calphad.2012.04.005/p4/text-04/s09#equilibrium_property","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"HM_FORM","property_group":"formation","property_printed":"enthalpies of formation","quote":"(5), with the reference state of the pure elements as their ground state structures. For this case, the values of H are the enthalpies at 298 K. The calculated enthalpy of formation of the stable compound stoichiometric HfW2 is very negative (   16,738 J/mol-atom). The three end-members have highly positive enthalpies of formation: 37,836 J/mol-atom for HfHf2, 71,302 J/ mol-atom for WHf2, and 43,757 J/mol-K for WW2.","quote_page":4,"reader_agreement":"single_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"unconfirmed (single reader)","reader_tier":"preliminary_flash","readers":["gemini-3.8-flash"],"record_kind":"running_text","reference_state":{},"reference_state_stored":{"printed":"pure elements as their ground state structures"},"source_system":"HF-W","system":"HF-W","temperature_K":298.15,"temperature_K_stored":298.0,"temperature_printed":"298 K","tool_release":"release v2 + tools dev copy record build","uncertainty":{"basis":"stated_default","note":"10% placeholder; none printed","value":3.7836},"uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":3.9,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.54664],"class":"model_calculated","entry":"model/HM_FORM","floor":3.9,"floor_unit":"kJ/mol-atom","n_pairs":2045,"value":3.9},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.0005},"sigma_scatter":null,"unit":"kJ/mol-atom","value_type":"HM_FORM"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"kJ/mol-atom","unit_basis":"printed_unit","unit_stored":"J/mol-atom","value":37.836,"value_stored":37836.0},{"chemical_system":"HF-W","conditions":{"kind":"not_applicable_own_calculation"},"evidence_class":"model","flags":{"calphad_check":"not_available","espei_certified":false,"espei_ready":false,"extraction_accepted":false,"gate_failures":["state_phases_missing"],"review_flags":["NOTE_SELF_FLAG"],"review_state":"extracted","second_reader":"done","value_in_quote":true},"fold_lpo":4,"fold_lso":2,"gate_failures":[{"code":"state_phases_missing","detail":"INVARIANT_TEMPERATURE without the phases of its state (reactions_in_quote:0)","effect":"not_accepted","gate":"R3"}],"id":"ORC-6XIS4ASMDZ","link_rule":"quote verbatim on one page/passage + printed value inside quote","locator":{"ref":"doi:10.1016/j.calphad.2012.04.005/p6/text-07"},"observation_type":"phase_transition","origin":{"attribution_note":"no printed citation: the paper's own statement","class":"model_value","measured_in":"doi:10.1016/j.calphad.2012.04.005","own_work_of_paper":true},"paper":"doi:10.1016/j.calphad.2012.04.005","paper_id":"doi:10.1016/j.calphad.2012.04.005","pid":"doi:10.1016/j.calphad.2012.04.005/p6/text-07/s05#phase_transition","pressure_Pa":101325,"pressure_basis":"assumed_default_1_atm_not_printed","pressure_basis_stored":"stated_default_1_atm","property":"INVARIANT_TEMPERATURE","property_group":"invariant reaction","quote":"A subregular solution model is necessary to reproduce the eutectic reaction at 2222 K and 20.42 at% W.","quote_page":6,"reaction":{"type":"eutectic"},"reader_agreement":"multi_reader","reader_agreement_basis":"derived_from_readers","reader_agreement_label":"confirmed (two or more readers)","reader_tier":"preliminary_flash","readers":["claude-opus-5.5","gemini-3.8-flash"],"record_kind":"running_text","source_system":"HF-W","system":"HF-W","temperature_K":2222.0,"temperature_printed":"2222 K","tool_release":"release v2 + tools dev copy record build","transition_kind":"eutectic","transition_kind_printed":"eutectic","uncertainty_budget":{"calibration":"orchid-uncertainty-calibration 2026-10-24 (audit round 2) sha256 6a2b5a92b0ec","quantities":{"value":{"sigma_composition":null,"sigma_conversion":null,"sigma_effective":4.0,"sigma_method":{"basis":"calibrated","ci95":[3.11346,4.29954],"class":"model_calculated","entry":"model/T_INVARIANT","floor":4.0,"floor_unit":"K","n_pairs":14146,"value":4.0},"sigma_printed":null,"sigma_reading":{"basis":"last_printed_digit","value":0.05},"sigma_scatter":null,"unit":"K","value_type":"T_INVARIANT"}},"sigma_rule":"max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter)"},"unit":"K","value":2222.0}],"release":"orchid-literature 2026-10-23 (record store db-v2.1: invariant/general v2.1.19r, text+context fixup-20261022)","system":"HF-W"}