Co–Y system

85 accepted literature values from 2 paper(s) (experimental 29, model 32, DFT 8, unspecified 16); 4 calculated phase diagram(s). 4 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (15) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	29
model	32
DFT	8
unspecified	16

Accepted values by property group
Property group	Values
invariant reaction	62
phase transition	11
formation	12

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.

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
CoY-04Du-LB.tdb	Z. Du, D. Lu, J. Alloys Compd., 373, 171-78(2004). doi:10.1016/j.jallcom.2003.10.050	`054ec0f14cb5cb4cdf0cc85ce2b059fb43310f4cfc24c16949b17455f1570246`	viewer · TDB · JSON
CoY-06Gol.tdb	W. Golumbfskie, Z.-K. Liu, J. Alloys Compd., 407, 193-200(2006). doi:10.1016/j.jallcom.2005.06.037	`aac7ff05f1475e50844ebcb446d5055f1be34dc36ef817d26749319a7385ec6a`	viewer · TDB · JSON
CoY-21Wan.tdb	Y. Wang, M. Ostrowska, G. Cacciamani, Calphad, 72, 102214(2021). doi:10.1016/j.calphad.2020.102214	`2ca9bae471245666dd130a85897ffc37488439a0ec08a4104a7dc1006338e31d`	viewer · TDB · JSON
CoY-96Du.tdb	Z. Du, W. Zhang, L. Zhao, Rare Met., 15, 185-90(1996).	`fdf8036fa6e999e0b95b1fc99ff231f8b0213f69fdf30aeeeb4a38d2f92149b5`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CoY-04Du-LB.tdb	1751.24	LIQUID (x(Y) 0.98138) + HCP_A3 (x(Y) 0.99983) + BCC_A2 (x(Y) 0.99985)
CoY-04Du-LB.tdb	1751.24	LIQUID (x(Y) 0.98138) + HCP_A3 (x(Y) 0.99983) + BCC_A2 (x(Y) 0.99985)
CoY-04Du-LB.tdb	1613.31	FCC_A1 (x(Y) 9.500e-4) + CO17Y2 (x(Y) 0.1101) + LIQUID (x(Y) 0.11352)
CoY-04Du-LB.tdb	1613.3	CO17Y2 (x(Y) 0.11032) + LIQUID (x(Y) 0.11376) + CO17Y2#2 (x(Y) 0.13737)
CoY-04Du-LB.tdb	1593.02	CO17Y2 (x(Y) 0.16361) + CO7Y2 (x(Y) 0.22222) + LIQUID (x(Y) 0.23577)
CoY-04Du-LB.tdb	1580.83	CO7Y2 (x(Y) 0.22222) + CO3Y (x(Y) 0.25) + LIQUID (x(Y) 0.27497)
CoY-04Du-LB.tdb	1580.83	CO7Y2 (x(Y) 0.22222) + CO3Y (x(Y) 0.25) + LIQUID (x(Y) 0.2748)
CoY-04Du-LB.tdb	1426.96	CO3Y (x(Y) 0.25) + CO2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.41417)
CoY-04Du-LB.tdb	1426.96	CO3Y (x(Y) 0.25) + CO2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.41394)
CoY-04Du-LB.tdb	1426.96	CO3Y (x(Y) 0.25) + CO2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.4142)
CoY-04Du-LB.tdb	1161.9	LIQUID (x(Y) 0.73578) + COY3_D011 (x(Y) 0.75) + HCP_A3 (x(Y) 0.99864)
CoY-04Du-LB.tdb	1161.9	LIQUID (x(Y) 0.73574) + COY3_D011 (x(Y) 0.75) + HCP_A3 (x(Y) 0.99864)
CoY-04Du-LB.tdb	1138.97	CO2Y_C15 (x(Y) 0.33333) + CO3Y2 (x(Y) 0.4) + LIQUID (x(Y) 0.54316)
CoY-04Du-LB.tdb	1138.97	CO2Y_C15 (x(Y) 0.33333) + CO3Y2 (x(Y) 0.4) + LIQUID (x(Y) 0.54322)
CoY-04Du-LB.tdb	1138.97	CO2Y_C15 (x(Y) 0.33333) + CO3Y2 (x(Y) 0.4) + LIQUID (x(Y) 0.54305)
CoY-04Du-LB.tdb	1092	CO17Y2#2 (x(Y) 0.10584) + CO17Y2 (x(Y) 0.15784) + CO7Y2 (x(Y) 0.22222)
CoY-04Du-LB.tdb	1070.97	CO3Y2 (x(Y) 0.4) + COY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.57121)
CoY-04Du-LB.tdb	1070.97	CO3Y2 (x(Y) 0.4) + COY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.57129)
CoY-04Du-LB.tdb	1070.97	CO3Y2 (x(Y) 0.4) + COY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.57098)
CoY-04Du-LB.tdb	1048	CO3Y2 (x(Y) 0.4) + CO7Y6 (x(Y) 0.46154) + COY_B33 (x(Y) 0.5)
CoY-04Du-LB.tdb	1012.6	COY_B33 (x(Y) 0.5) + CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.61597)
CoY-04Du-LB.tdb	1012.6	COY_B33 (x(Y) 0.5) + CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.6159)
CoY-04Du-LB.tdb	1012.6	COY_B33 (x(Y) 0.5) + CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.6161)
CoY-04Du-LB.tdb	1011.35	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62778) + COY3_D011 (x(Y) 0.75)
CoY-04Du-LB.tdb	1011.35	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62773) + COY3_D011 (x(Y) 0.75)
CoY-04Du-LB.tdb	1011.35	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62785) + COY3_D011 (x(Y) 0.75)
CoY-04Du-LB.tdb	1011.35	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62785) + COY3_D011 (x(Y) 0.75)
CoY-04Du-LB.tdb	1004.98	COY_B33 (x(Y) 0.5) + CO3Y4 (x(Y) 0.57143) + CO5Y8 (x(Y) 0.61538)
CoY-04Du-LB.tdb	694.99	FCC_A1 (x(Y) 0) + HCP_A3 (x(Y) 0) + CO17Y2 (x(Y) 0.10526)
CoY-06Gol.tdb	1752.54	LIQUID (x(Y) 0.97881) + HCP_A3 (x(Y) 0.99756) + BCC_A2 (x(Y) 0.99783)
CoY-06Gol.tdb	1618.41	CO17Y2 (x(Y) 0.1102) + LIQUID (x(Y) 0.13647) + CO5Y_D2D (x(Y) 0.14956)
CoY-06Gol.tdb	1615.02	FCC_A1 (x(Y) 4.800e-4) + LIQUID (x(Y) 0.07029) + CO17Y2 (x(Y) 0.09622)
CoY-06Gol.tdb	1587.48	CO5Y_D2D (x(Y) 0.16853) + CO7Y2 (x(Y) 0.22222) + LIQUID (x(Y) 0.22878)
CoY-06Gol.tdb	1578.3	CO7Y2 (x(Y) 0.22222) + CO3Y (x(Y) 0.25) + LIQUID (x(Y) 0.25949)
CoY-06Gol.tdb	1578.29	CO7Y2 (x(Y) 0.22222) + CO3Y (x(Y) 0.25) + LIQUID (x(Y) 0.25975)
CoY-06Gol.tdb	1425.68	CO3Y (x(Y) 0.25) + CO2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.40551)
CoY-06Gol.tdb	1425.68	CO3Y (x(Y) 0.25) + CO2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.40523)
CoY-06Gol.tdb	1425.68	CO3Y (x(Y) 0.25) + CO2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.40552)
CoY-06Gol.tdb	1160.32	LIQUID (x(Y) 0.72569) + COY3_D011 (x(Y) 0.75) + HCP_A3 (x(Y) 0.99327)
CoY-06Gol.tdb	1160.32	LIQUID (x(Y) 0.72567) + COY3_D011 (x(Y) 0.75) + HCP_A3 (x(Y) 0.99327)
CoY-06Gol.tdb	1138.05	CO2Y_C15 (x(Y) 0.33333) + CO3Y2 (x(Y) 0.4) + LIQUID (x(Y) 0.55212)
CoY-06Gol.tdb	1138.05	CO2Y_C15 (x(Y) 0.33333) + CO3Y2 (x(Y) 0.4) + LIQUID (x(Y) 0.55219)
CoY-06Gol.tdb	1138.05	CO2Y_C15 (x(Y) 0.33333) + CO3Y2 (x(Y) 0.4) + LIQUID (x(Y) 0.55203)
CoY-06Gol.tdb	1068.5	CO3Y2 (x(Y) 0.4) + COY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.58253)
CoY-06Gol.tdb	1068.5	CO3Y2 (x(Y) 0.4) + COY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.5826)
CoY-06Gol.tdb	1068.5	CO3Y2 (x(Y) 0.4) + COY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.58228)
CoY-06Gol.tdb	1048.03	CO3Y2 (x(Y) 0.4) + CO7Y6 (x(Y) 0.46154) + COY_B33 (x(Y) 0.5)
CoY-06Gol.tdb	1012.08	COY_B33 (x(Y) 0.5) + CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62196)
CoY-06Gol.tdb	1012.07	COY_B33 (x(Y) 0.5) + CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.6218)
CoY-06Gol.tdb	1012.07	COY_B33 (x(Y) 0.5) + CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62171)
CoY-06Gol.tdb	1011.66	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62526) + COY3_D011 (x(Y) 0.75)
CoY-06Gol.tdb	1011.66	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62519) + COY3_D011 (x(Y) 0.75)
CoY-06Gol.tdb	1011.66	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62534) + COY3_D011 (x(Y) 0.75)
CoY-06Gol.tdb	1011.66	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62535) + COY3_D011 (x(Y) 0.75)
CoY-06Gol.tdb	1004.62	COY_B33 (x(Y) 0.5) + CO3Y4 (x(Y) 0.57143) + CO5Y8 (x(Y) 0.61538)
CoY-06Gol.tdb	968.38	CO17Y2 (x(Y) 0.1053) + CO5Y_D2D (x(Y) 0.17516) + CO7Y2 (x(Y) 0.22222)
CoY-06Gol.tdb	694.99	FCC_A1 (x(Y) 0) + HCP_A3 (x(Y) 0) + CO17Y2 (x(Y) 0.10526)
CoY-06Gol.tdb	304.79	CO7Y6 (x(Y) 0.46154) + COY_B33 (x(Y) 0.5) + CO3Y4 (x(Y) 0.57143)
CoY-21Wan.tdb	1752.08	LIQUID (x(Y) 0.97895) + HCP_A3 (x(Y) 0.99837) + BCC_A2 (x(Y) 0.99855)
CoY-21Wan.tdb	1629.15	FCC_A1 (x(Y) 4.200e-4) + LIQUID (x(Y) 0.0698) + CO17Y2 (x(Y) 0.09531)
CoY-21Wan.tdb	1628.09	CO17Y2 (x(Y) 0.10995) + LIQUID (x(Y) 0.1427) + CO5Y_D2D (x(Y) 0.14909)
CoY-21Wan.tdb	1586.06	CO5Y_D2D (x(Y) 0.16764) + CO7Y2 (x(Y) 0.22222) + LIQUID (x(Y) 0.2368)
CoY-21Wan.tdb	1577.12	CO7Y2 (x(Y) 0.22222) + CO3Y (x(Y) 0.25) + LIQUID (x(Y) 0.26167)
CoY-21Wan.tdb	1577.12	CO7Y2 (x(Y) 0.22222) + CO3Y (x(Y) 0.25) + LIQUID (x(Y) 0.26148)
CoY-21Wan.tdb	1423.52	CO3Y (x(Y) 0.25) + CO2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.40249)
CoY-21Wan.tdb	1423.52	CO3Y (x(Y) 0.25) + CO2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.40229)
CoY-21Wan.tdb	1423.52	CO3Y (x(Y) 0.25) + CO2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.40251)
CoY-21Wan.tdb	1155.13	LIQUID (x(Y) 0.72586) + COY3_D011 (x(Y) 0.75) + HCP_A3 (x(Y) 0.99511)
CoY-21Wan.tdb	1134	CO2Y_C15 (x(Y) 0.33333) + CO3Y2 (x(Y) 0.4) + LIQUID (x(Y) 0.54735)
CoY-21Wan.tdb	1134	CO2Y_C15 (x(Y) 0.33333) + CO3Y2 (x(Y) 0.4) + LIQUID (x(Y) 0.54741)
CoY-21Wan.tdb	1134	CO2Y_C15 (x(Y) 0.33333) + CO3Y2 (x(Y) 0.4) + LIQUID (x(Y) 0.54723)
CoY-21Wan.tdb	1066.27	CO3Y2 (x(Y) 0.4) + COY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.57905)
CoY-21Wan.tdb	1066.27	CO3Y2 (x(Y) 0.4) + COY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.57915)
CoY-21Wan.tdb	1066.27	CO3Y2 (x(Y) 0.4) + COY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.57903)
CoY-21Wan.tdb	1048.23	CO3Y2 (x(Y) 0.4) + CO7Y6 (x(Y) 0.46154) + COY_B33 (x(Y) 0.5)
CoY-21Wan.tdb	1011.64	COY_B33 (x(Y) 0.5) + CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62199)
CoY-21Wan.tdb	1011.64	COY_B33 (x(Y) 0.5) + CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.622)
CoY-21Wan.tdb	1011.54	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62308) + COY3_D011 (x(Y) 0.75)
CoY-21Wan.tdb	1011.54	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62306) + COY3_D011 (x(Y) 0.75)
CoY-21Wan.tdb	999.88	COY_B33 (x(Y) 0.5) + CO3Y4 (x(Y) 0.57143) + CO5Y8 (x(Y) 0.61538)
CoY-21Wan.tdb	968.12	CO17Y2 (x(Y) 0.10541) + CO5Y_D2D (x(Y) 0.1746) + CO7Y2 (x(Y) 0.22222)
CoY-21Wan.tdb	694.99	FCC_A1 (x(Y) 0) + HCP_A3 (x(Y) 0) + CO17Y2 (x(Y) 0.10526)
CoY-96Du.tdb	1751.15	LIQUID (x(Y) 0.98169) + HCP_A3 (x(Y) 1) + BCC_A2 (x(Y) 1)
CoY-96Du.tdb	1751.15	LIQUID (x(Y) 0.98165) + BCC_A2 (x(Y) 1) + HCP_A3 (x(Y) 1)
CoY-96Du.tdb	1751.15	LIQUID (x(Y) 0.98168) + HCP_A3 (x(Y) 1) + BCC_A2 (x(Y) 1)
CoY-96Du.tdb	1751.15	LIQUID (x(Y) 0.98166) + BCC_A2 (x(Y) 1) + HCP_A3 (x(Y) 1)
CoY-96Du.tdb	1614.28	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.07442) + CO17Y2 (x(Y) 0.10526)
CoY-96Du.tdb	1614.28	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.07448) + CO17Y2 (x(Y) 0.10526)
CoY-96Du.tdb	1614.28	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.07444) + CO17Y2 (x(Y) 0.10526)
CoY-96Du.tdb	1614.28	FCC_A1 (x(Y) 0) + LIQUID (x(Y) 0.07435) + CO17Y2 (x(Y) 0.10526)
CoY-96Du.tdb	1612.99	CO17Y2 (x(Y) 0.10526) + LIQUID (x(Y) 0.14151) + CO5Y_D2D (x(Y) 0.16667)
CoY-96Du.tdb	1612.99	CO17Y2 (x(Y) 0.10526) + LIQUID (x(Y) 0.14123) + CO5Y_D2D (x(Y) 0.16667)
CoY-96Du.tdb	1593.04	CO5Y_D2D (x(Y) 0.16667) + CO7Y2 (x(Y) 0.22222) + LIQUID (x(Y) 0.22986)
CoY-96Du.tdb	1593.03	CO5Y_D2D (x(Y) 0.16667) + CO7Y2 (x(Y) 0.22222) + LIQUID (x(Y) 0.23022)
CoY-96Du.tdb	1579.2	CO7Y2 (x(Y) 0.22222) + CO3Y (x(Y) 0.25) + LIQUID (x(Y) 0.26939)
CoY-96Du.tdb	1579.19	CO7Y2 (x(Y) 0.22222) + CO3Y (x(Y) 0.25) + LIQUID (x(Y) 0.26902)
CoY-96Du.tdb	1579.19	CO7Y2 (x(Y) 0.22222) + CO3Y (x(Y) 0.25) + LIQUID (x(Y) 0.26879)
CoY-96Du.tdb	1426.47	CO3Y (x(Y) 0.25) + CO2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.40699)
CoY-96Du.tdb	1426.47	CO3Y (x(Y) 0.25) + CO2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.4069)
CoY-96Du.tdb	1426.47	CO3Y (x(Y) 0.25) + CO2Y_C15 (x(Y) 0.33333) + LIQUID (x(Y) 0.407)
CoY-96Du.tdb	1168.59	LIQUID (x(Y) 0.73013) + COY3_D011 (x(Y) 0.75) + HCP_A3 (x(Y) 1)
CoY-96Du.tdb	1168.59	LIQUID (x(Y) 0.73032) + COY3_D011 (x(Y) 0.75) + HCP_A3 (x(Y) 1)
CoY-96Du.tdb	1168.58	LIQUID (x(Y) 0.73022) + COY3_D011 (x(Y) 0.75) + HCP_A3 (x(Y) 1)
CoY-96Du.tdb	1168.58	LIQUID (x(Y) 0.73019) + COY3_D011 (x(Y) 0.75) + HCP_A3 (x(Y) 1)
CoY-96Du.tdb	1143.83	CO2Y_C15 (x(Y) 0.33333) + CO3Y2 (x(Y) 0.4) + LIQUID (x(Y) 0.55617)
CoY-96Du.tdb	1143.83	CO2Y_C15 (x(Y) 0.33333) + CO3Y2 (x(Y) 0.4) + LIQUID (x(Y) 0.5562)
CoY-96Du.tdb	1143.83	CO2Y_C15 (x(Y) 0.33333) + CO3Y2 (x(Y) 0.4) + LIQUID (x(Y) 0.55604)
CoY-96Du.tdb	1096.4	CO17Y2 (x(Y) 0.10526) + CO5Y_D2D (x(Y) 0.16667) + CO7Y2 (x(Y) 0.22222)
CoY-96Du.tdb	1077.67	CO3Y2 (x(Y) 0.4) + COY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.58385)
CoY-96Du.tdb	1077.67	CO3Y2 (x(Y) 0.4) + COY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.58396)
CoY-96Du.tdb	1077.67	CO3Y2 (x(Y) 0.4) + COY_B33 (x(Y) 0.5) + LIQUID (x(Y) 0.58359)
CoY-96Du.tdb	1049.19	CO3Y2 (x(Y) 0.4) + CO7Y6 (x(Y) 0.46154) + COY_B33 (x(Y) 0.5)
CoY-96Du.tdb	1022.39	COY_B33 (x(Y) 0.5) + CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.61962)
CoY-96Du.tdb	1022.39	COY_B33 (x(Y) 0.5) + CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.61954)
CoY-96Du.tdb	1022.02	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62325) + COY3_D011 (x(Y) 0.75)
CoY-96Du.tdb	1022.02	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62323) + COY3_D011 (x(Y) 0.75)
CoY-96Du.tdb	1022.02	CO5Y8 (x(Y) 0.61538) + LIQUID (x(Y) 0.62332) + COY3_D011 (x(Y) 0.75)
CoY-96Du.tdb	1007.11	COY_B33 (x(Y) 0.5) + CO3Y4 (x(Y) 0.57143) + CO5Y8 (x(Y) 0.61538)
CoY-96Du.tdb	694.99	HCP_A3 (x(Y) 0) + FCC_A1 (x(Y) 0) + CO17Y2 (x(Y) 0.10526)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull CoY-04Du-LB · CALPHAD hull CoY-06Gol · CALPHAD hull CoY-96Du

Invariant reactions (literature)

Invariant reactions reported in the literature for the Co–Y system (62)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1795	congruent melting: L -> β-Y	β-Y: Y 1	experimental	[1] Golumbfskie 2006 cites Gschneidner 1986 doi	Table 2, p. 2, row 36 report
1795	congruent melting: L -> β-Y	β-Y: Y 1	model	[1] Golumbfskie 2006	Table 2, p. 2, row 35 report
1768	congruent melting: L -> α-Co	α-Co: Y 0	model	[1] Golumbfskie 2006	Table 2, p. 2, row 3 report
1768	congruent melting: L -> α-Co	α-Co: Y 0	experimental	[1] Golumbfskie 2006 cites Okamoto 1992 doi	Table 2, p. 2, row 4 report
1751	Liq. + bcc(Y) -> hcp(Y)	L: Y 0.9814; bcc(Y): Y 0.9999; hcp(Y): Y 0.9998	model	[2] Du 2004	Table 4, p. 7, row 31 report
1751	Liq. + bcc(Y) -> hcp(Y)	L: Y 0.98; bcc(Y): Y 1; hcp(Y): Y 1	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 32 report
1630	congruent melting: L -> β-Co17Y2	L: Y 0.11; β-Co17Y2: Y 0.11	experimental	[1] Golumbfskie 2006 cites Wu 1991	Table 2, p. 2, row 8 report
1625	congruent melting: L -> β-Co17Y2	L: Y 0.106; β-Co17Y2: Y 0.106	model	[1] Golumbfskie 2006	Table 2, p. 2, row 7 report
1620	congruent melting: L -> Co5Y	L: Y 0.153; Co5Y: Y 0.153	model	[1] Golumbfskie 2006	Table 2, p. 2, row 11 report
1618	eutectic: L -> β-Co17Y2 + Co5Y	L: Y 0.1359; β-Co17Y2: Y 0.1102; Co5Y: Y 0.1494	model	[1] Golumbfskie 2006	Table 2, p. 2, row 9 report
1618	congruent melting: L -> Co5Y	L: Y 0.156; Co5Y: Y 0.156	experimental	[1] Golumbfskie 2006 cites Khan 1974	Table 2, p. 2, row 12 report
1615	eutectic: L -> (α-Co) + β-Co17Y2	L: Y 0.0702; (α-Co): Y 0; β-Co17Y2: Y 0.0961	model	[1] Golumbfskie 2006	Table 2, p. 2, row 5 report
1613	Liq.+ fcc (Co) -> Co17Y2^a	L: Y 0.07; fcc(Co): Y 0; Co17Y2: Y 0.1	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 2 report
1613	eutectic: Liq. -> Co17Y2 + Co5Y	L: Y 0.1138; Co17Y2: Y 0.1103; Co5Y: Y 0.1374	model	[2] Du 2004	Table 4, p. 7, row 5 report
1613	Liq.+ fcc (Co) -> Co17Y2^a	L: Y 0.1135; fcc(Co): Y 0.001; Co17Y2: Y 0.1058	model	[2] Du 2004	Table 4, p. 7, row 1 report
1613	eutectic: L -> (α-Co) + β-Co17Y2	L: Y 0.07; (α-Co): Y 0.005; β-Co17Y2: Y 0.1	experimental	[1] Golumbfskie 2006 cites Pelleg 1965 doi	Table 2, p. 2, row 6 report
1607	eutectic: Liq. -> Co17Y2 + Co5Y	L: Y 0.116; Co17Y2: Y 0.11; Co5Y: Y 0.14	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 6 report
1607	eutectic: L -> β-Co17Y2 + Co5Y	L: Y 0.1157; β-Co17Y2: Y 0.11; Co5Y: Y 0.14	experimental	[1] Golumbfskie 2006 cites Khan 1974	Table 2, p. 2, row 10 report
1593	L + Co5Y -> Co7Y2	L: Y 0.29; Co5Y: Y 0.175; Co7Y2: Y 0.222	experimental	[1] Golumbfskie 2006 cites Wu 1991	Table 2, p. 2, row 14 report
1593	Liq. + Co5Y -> Co7Y2	L: Y 0.28; Co5Y: Y 0.17; Co7Y2: Y 0.222222	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 12 report
1593	Liq. + Co5Y -> Co7Y2	L: Y 0.2358; Co5Y: Y 0.1636; Co7Y2: Y 0.222222	model	[2] Du 2004	Table 4, p. 7, row 11 report
1588	L + Co5Y -> Co7Y2	L: Y 0.2287; Co5Y: Co 0.833333, Y 0.166667; Co7Y2: Co 0.777778, Y 0.222222	model	[1] Golumbfskie 2006	Table 2, p. 2, row 13 report
1581	L + Co7Y2 -> Co3Y	L: Y 0.315; Co7Y2: Y 0.222; Co3Y: Y 0.25	experimental	[1] Golumbfskie 2006 cites Wu 1991	Table 2, p. 2, row 16 report
1581	Liq. + Co7Y2 -> Co3Y	L: Y 0.3; Co7Y2: Y 0.222222; Co3Y: Y 0.25	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 14 report
1581	Liq. + Co7Y2 -> Co3Y	L: Y 0.275; Co7Y2: Y 0.222222; Co3Y: Y 0.25	model	[2] Du 2004	Table 4, p. 7, row 13 report
1578	L + Co7Y2 -> Co3Y	L: Y 0.2598; Co7Y2: Co 0.777778, Y 0.222222; Co3Y: Co 0.75, Y 0.25	model	[1] Golumbfskie 2006	Table 2, p. 2, row 15 report
1427	L + Co3Y -> Co2Y	L: Y 0.432; Co3Y: Y 0.25; Co2Y: Y 0.333	experimental	[1] Golumbfskie 2006 cites Wu 1991	Table 2, p. 2, row 18 report
1427	Liq. + Co3Y -> Co2Y	L: Y 0.43; Co3Y: Y 0.25; Co2Y: Y 0.333333	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 16 report
1427	Liq. + Co3Y -> Co2Y	L: Y 0.4142; Co3Y: Y 0.25; Co2Y: Y 0.333333	model	[2] Du 2004	Table 4, p. 7, row 15 report
1426	L + Co3Y -> Co2Y	L: Y 0.4055; Co3Y: Co 0.75, Y 0.25; Co2Y: Co 0.666667, Y 0.333333	model	[1] Golumbfskie 2006	Table 2, p. 2, row 17 report
1162	Liq. + hcp(Y) -> CoY3	L: Y 0.71; hcp(Y): Y 1; CoY3: Y 0.75	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 30 report
1162	L+(α-Y) -> CoY3	L: Y 0.714; (α-Y): Y 1; CoY3: Y 0.75	experimental	[1] Golumbfskie 2006 cites Wu 1991	Table 2, p. 2, row 32 report
1162	Liq. + hcp(Y) -> CoY3	L: Y 0.7358; hcp(Y): Y 0.9986; CoY3: Y 0.75	model	[2] Du 2004	Table 4, p. 7, row 29 report
1160	L+(α-Y) -> CoY3	L: Y 0.726; CoY3: Co 0.25, Y 0.75	model	[1] Golumbfskie 2006	Table 2, p. 2, row 31 report
1139	Liq. + Co2Y -> Co3Y2	L: Y 0.55; Co2Y: Y 0.333333; Co3Y2: Y 0.4	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 18 report
1139	Liq. + Co2Y -> Co3Y2	L: Y 0.5432; Co2Y: Y 0.333333; Co3Y2: Y 0.4	model	[2] Du 2004	Table 4, p. 7, row 17 report
1139	L + Co2Y -> Co3Y2	L: Y 0.555; Co2Y: Y 0.333; Co3Y2: Y 0.4	experimental	[1] Golumbfskie 2006 cites Wu 1991	Table 2, p. 2, row 20 report
1138	L + Co2Y -> Co3Y2	L: Y 0.5521; Co2Y: Co 0.666667, Y 0.333333; Co3Y2: Co 0.6, Y 0.4	model	[1] Golumbfskie 2006	Table 2, p. 2, row 19 report
1092	Co5Y -> Co17Y2 + Co7Y2	Co5Y: Y 0.1578; Co17Y2: Y 0.1058; Co7Y2: Y 0.222222	model	[2] Du 2004	Table 4, p. 7, row 9 report
1092	Co5Y -> Co17Y2 + Co7Y2	Co5Y: Y 0.167; Co17Y2: Y 0.105; Co7Y2: Y 0.222222	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 10 report
1071	L + Co3Y2 -> CoY	L: Y 0.588; Co3Y2: Y 0.4; CoY: Y 0.5	experimental	[1] Golumbfskie 2006 cites Wu 1991	Table 2, p. 2, row 24 report
1071	Liq. + Co3Y2 -> CoY	L: Y 0.59; Co3Y2: Y 0.4; CoY: Y 0.5	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 20 report
1071	Liq. + Co3Y2 -> CoY	L: Y 0.5712; Co3Y2: Y 0.4; CoY: Y 0.5	model	[2] Du 2004	Table 4, p. 7, row 19 report
1069	L + Co3Y2 -> CoY	L: Y 0.5825; Co3Y2: Co 0.6, Y 0.4; CoY: Co 0.5, Y 0.5	model	[1] Golumbfskie 2006	Table 2, p. 2, row 23 report
1048	Co3Y2 + CoY -> Co7Y6	Co3Y2: Y 0.4; CoY: Y 0.5; Co7Y6: Y 0.461538	model	[2] Du 2004	Table 4, p. 7, row 21 report
1048	Co3Y2 + CoY -> Co7Y6	Co3Y2: Y 0.4; CoY: Y 0.5; Co7Y6: Y 0.454	experimental	[1] Golumbfskie 2006 cites Wu 1991	Table 2, p. 2, row 22 report
1048	Co3Y2 + CoY -> Co7Y6	Co3Y2: Y 0.4; CoY: Y 0.5; Co7Y6: Y 0.461538	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 22 report
1048	Co3Y2 + CoY -> Co7Y6	Co3Y2: Y 0.5; CoY: Y 0.5; Co7Y6: Co 0.538462, Y 0.461538	model	[1] Golumbfskie 2006	Table 2, p. 2, row 21 report
1013	Liq. + CoY -> Co5Y8	L: Y 0.63; CoY: Y 0.5; Co5Y8: Y 0.615385	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 24 report
1013	Liq. + CoY -> Co5Y8	L: Y 0.616; CoY: Y 0.5; Co5Y8: Y 0.615385	model	[2] Du 2004	Table 4, p. 7, row 23 report
1013	L + CoY -> Co5Y8	L: Y 0.633; CoY: Y 0.5; Co5Y8: Y 0.615	experimental	[1] Golumbfskie 2006 cites Grover 1982 doi	Table 2, p. 2, row 28 report
1012	L + CoY -> Co5Y8	L: Y 0.6218; CoY: Co 0.5, Y 0.5; Co5Y8: Co 0.384615, Y 0.615385	model	[1] Golumbfskie 2006	Table 2, p. 2, row 27 report
1012	eutectic: L -> CoY3 + Co5Y8	L: Y 0.6253; CoY3: Co 0.25, Y 0.75; Co5Y8: Co 0.384615, Y 0.615385	model	[1] Golumbfskie 2006	Table 2, p. 2, row 29 report
1011	eutectic: L -> CoY3 + Co5Y8	L: Y 0.63; CoY3: Y 0.75; Co5Y8: Y 0.615	experimental	[1] Golumbfskie 2006 cites Wu 1991	Table 2, p. 2, row 30 report
1011	eutectic: Liq. -> Co5Y8 + CoY3	L: Y 0.63; Co5Y8: Y 0.615385; CoY3: Y 0.75	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 28 report
1011	eutectic: Liq. -> Co5Y8 + CoY3	L: Y 0.6278; Co5Y8: Y 0.615385; CoY3: Y 0.75	model	[2] Du 2004	Table 4, p. 7, row 27 report
1005	Co5Y8 + CoY -> Co3Y4	Co5Y8: Y 0.615385; CoY: Y 0.5; Co3Y4: Y 0.571429	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 26 report
1005	YCo + Co5Y8 -> Co3Y4	YCo: Y 0.5; Co5Y8: Y 0.615; Co3Y4: Y 0.571	experimental	[1] Golumbfskie 2006 cites Wu 1991	Table 2, p. 2, row 26 report
1005	YCo + Co5Y8 -> Co3Y4	YCo: Y 0.615; Co5Y8: Y 0.615; Co3Y4: Co 0.428571, Y 0.571429	model	[1] Golumbfskie 2006	Table 2, p. 2, row 25 report
1005	Co5Y8 + CoY -> Co3Y4	Co5Y8: Y 0.615385; CoY: Y 0.5; Co3Y4: Y 0.571429	model	[2] Du 2004	Table 4, p. 7, row 25 report
695	fcc(Co) -> Co17Y2+hcp(Co)	fcc(Co): Y 0; Co17Y2: Y 0.105; hcp(Co): Y 0	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 4 report
695	fcc(Co) -> Co17Y2+hcp(Co)	fcc(Co): Y 0; Co17Y2: Y 0.1053; hcp(Co): Y 0	model	[2] Du 2004	Table 4, p. 7, row 3 report

Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from dft_parity.json.

Enthalpies of formation, Co–Y system (12)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
(Co2)(Co)4(Co)		12.94 kJ/mol-atom	0	DFT			[1] Golumbfskie 2006	Table 4, p. 3, row 7 report
(Co2)(Co)4(Va)		25.81 kJ/mol-atom	0	DFT			[1] Golumbfskie 2006	Table 4, p. 3, row 6 report
(Y)(Co)4(Va)		16.31 kJ/mol-atom	0	DFT			[1] Golumbfskie 2006	Table 4, p. 3, row 5 report
Co17Y2		-10.35 kJ/mol-atom	0	DFT			[1] Golumbfskie 2006	Table 4, p. 3, row 1 report
Co17Y2	Co17Y2	-7.6 kJ/mol-atom ± 0.8	298.15	experimental	-9.092 (mp-aaackyhw)	-10.589 (oqmd-29527)	[1] Golumbfskie 2006 cites Subramanian 1985 doi	Table 4, p. 3, row 14 report
Co2Y	Co2Y	-22.76 kJ/mol-atom ± 1.33	298.15	experimental	-17.069 (mp-aaaaabxu)	-18.206 (oqmd-19394)	[1] Golumbfskie 2006 cites Subramanian 1985 doi	Table 4, p. 3, row 17 report
Co2Y		-19.29 kJ/mol-atom	0	DFT			[1] Golumbfskie 2006	Table 4, p. 3, row 16 report
CoY		-23.14 kJ/mol-atom	0	DFT			[1] Golumbfskie 2006	Table 4, p. 3, row 10 report
CoY3		-16.96 kJ/mol-atom	0	DFT			[1] Golumbfskie 2006	Table 4, p. 3, row 12 report
CoY3	CoY3	-15.8 kJ/mol-atom ± 4.98	298.15	experimental	-13.914 (mp-aaackxna)	-14.674 (oqmd-664091)	[1] Golumbfskie 2006 cites Subramanian 1985 doi	Table 4, p. 3, row 18 report
Y(Co)4(Co)		-12.2 kJ/mol-atom ± 0.87	298.15	experimental			[1] Golumbfskie 2006 cites Subramanian 1985 doi	Table 4, p. 3, row 15 report
Y(Co)4(Co)		-9.42 kJ/mol-atom	0	DFT			[1] Golumbfskie 2006	Table 4, p. 3, row 3 report

Other properties

Phase transition (11)

Phase transition, Co–Y system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	2 K	2	magnetic: CoY₃	experimental	[2] Du 2004	Table 2, p. 4, row 7 report
Phase transition	13 K	13	magnetic: Co₃Y₄	experimental	[2] Du 2004	Table 2, p. 4, row 6 report
Phase transition	296 K	296	magnetic: Co₂Y	experimental	[2] Du 2004	Table 2, p. 4, row 5 report
Phase transition	305 K	305	magnetic: Co₃Y	experimental	[2] Du 2004	Table 2, p. 4, row 4 report
Phase transition	639 K	639	magnetic: Co₇Y₂	experimental	[2] Du 2004	Table 2, p. 4, row 3 report
Phase transition	977 K	977	magnetic: Co₅Y	experimental	[1] Golumbfskie 2006	Table 5, p. 3, row 4 report
Phase transition	977 K	977	magnetic: Co₅Y	experimental	[2] Du 2004	Table 2, p. 4, row 2 report
Phase transition	1167 K	1167	magnetic: Co₁₇Y₂	experimental	[2] Du 2004	Table 2, p. 4, row 1 report
Phase transition	1167 K	1167	magnetic: Co₁₇Y₂	experimental	[1] Golumbfskie 2006	Table 5, p. 3, row 2 report
Phase transition	1618 K	1618	Liq. -> Co5Y L: Y 0.16; Co5Y: Y 0.166667	unspecified	[2] Du 2004 cites Conclusions	Table 4, p. 7, row 8 report
Phase transition	1618 K	1618	Liq. -> Co5Y L: Y 0.1547; Co5Y: Y 0.166667	model	[2] Du 2004	Table 4, p. 7, row 7 report

Sources

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

William Golumbfskie, Zi-Kui Liu, CALPHAD/first-principles re-modeling of the Co–Y binary system, Journal of Alloys and Compounds 407, 193-200 (2006). doi:10.1016/j.jallcom.2005.06.037
Zhenmin Du, Dongxian Lü, Thermodynamic modelling of the Co–Y system, Journal of Alloys and Compounds 373, 171-178 (2004). doi:10.1016/j.jallcom.2003.10.050

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). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi: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). doi: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). doi: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.

@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}
}