Ru–Si system

98 accepted literature values from 2 paper(s) (experimental 36, model 56, unspecified 6); 4 calculated phase diagram(s). 13 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 (10) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	36
model	56
unspecified	6

Accepted values by property group
Property group	Values
invariant reaction	57
phase transition	1
formation	40

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
RuSi-01Du-LB.tdb	Y. Du, K.H. Chen, J.C. Schuster, L. Perring, B.Y. Huang, Z.H. Yuan, J.C. Gachon, Z. Metallkd., 92, 323-27(2001). doi:10.3139/ijmr-2001-0064	`52402724aa676957b22d61abc505f902822c7c759e0dcdc10ae6bf4e41960184`	viewer · TDB · JSON
RuSi-01Liu.tdb	Y.Q. Liu, G. Shao, K.P. Homewood, J. Alloys Compd., 320, 72-79(2001). doi:10.1016/S0925-8388(01)00931-8	`a229255af0c2e5ae55074d56e80f93a7b08e40c5d07ae943f4bbe8e1951708f4`	viewer · TDB · JSON
RuSi-09Lon.tdb	Z.H. Long, H.S. Liu, Z.P. Jin, J. Alloys Compd., 479, 262-67(2009). doi:10.1016/j.jallcom.2009.01.079	`6b726c2f0814471a370bbdcb9e252adb9130cd416c639c037fb990d67613b213`	viewer · TDB · JSON
RuSi-95Che.tdb	P.-Y. Chevalier, E. Fischer, unpublished work, 1995.	`fac3db235d64c253a562bee8887eeebfaf27c4e2e04700be67865d339364d189`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
RuSi-01Du-LB.tdb	1957.79	RUSI (x(Si) 0.5) + LIQUID (x(Si) 0.5995) + RU2SI3 (x(Si) 0.6)
RuSi-01Du-LB.tdb	1957.79	RUSI (x(Si) 0.5) + LIQUID (x(Si) 0.59937) + RU2SI3 (x(Si) 0.6)
RuSi-01Du-LB.tdb	1957.79	RUSI (x(Si) 0.5) + LIQUID (x(Si) 0.59983) + RU2SI3 (x(Si) 0.6)
RuSi-01Du-LB.tdb	1830.01	LIQUID (x(Si) 0.29217) + RU4SI3 (x(Si) 0.42857) + RUSI (x(Si) 0.5)
RuSi-01Du-LB.tdb	1830.01	LIQUID (x(Si) 0.29239) + RU4SI3 (x(Si) 0.42857) + RUSI (x(Si) 0.5)
RuSi-01Du-LB.tdb	1822.42	LIQUID (x(Si) 0.28571) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-01Du-LB.tdb	1822.42	LIQUID (x(Si) 0.28551) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-01Du-LB.tdb	1814.5	HCP_A3 (x(Si) 0.05207) + LIQUID (x(Si) 0.27129) + RU2SI_C37 (x(Si) 0.33333)
RuSi-01Du-LB.tdb	1814.5	HCP_A3 (x(Si) 0.05206) + LIQUID (x(Si) 0.27127) + RU2SI_C37 (x(Si) 0.33333)
RuSi-01Du-LB.tdb	1561.64	RU2SI3 (x(Si) 0.6) + LIQUID (x(Si) 0.87768) + DIAMOND_A4 (x(Si) 1)
RuSi-01Du-LB.tdb	1561.64	RU2SI3 (x(Si) 0.6) + LIQUID (x(Si) 0.87788) + DIAMOND_A4 (x(Si) 1)
RuSi-01Du-LB.tdb	1561.64	RU2SI3 (x(Si) 0.6) + LIQUID (x(Si) 0.87796) + DIAMOND_A4 (x(Si) 1)
RuSi-01Du-LB.tdb	1561.64	RU2SI3 (x(Si) 0.6) + LIQUID (x(Si) 0.87796) + DIAMOND_A4 (x(Si) 1)
RuSi-01Du-LB.tdb	1519.65	HCP_A3 (x(Si) 0.02543) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-01Du-LB.tdb	1519.65	HCP_A3 (x(Si) 0.02542) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-01Du-LB.tdb	1519.65	HCP_A3 (x(Si) 0.0254) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-01Du-LB.tdb	1519.65	HCP_A3 (x(Si) 0.0254) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-01Liu.tdb	1969.39	RUSI (x(Si) 0.5) + LIQUID (x(Si) 0.56828) + RU2SI3 (x(Si) 0.6)
RuSi-01Liu.tdb	1969.39	RUSI (x(Si) 0.5) + LIQUID (x(Si) 0.56814) + RU2SI3 (x(Si) 0.6)
RuSi-01Liu.tdb	1838.52	LIQUID (x(Si) 0.34411) + RU4SI3 (x(Si) 0.42857) + RUSI (x(Si) 0.5)
RuSi-01Liu.tdb	1838.52	LIQUID (x(Si) 0.34434) + RU4SI3 (x(Si) 0.42857) + RUSI (x(Si) 0.5)
RuSi-01Liu.tdb	1820.16	LIQUID (x(Si) 0.32752) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-01Liu.tdb	1820.15	LIQUID (x(Si) 0.32701) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-01Liu.tdb	1820.15	LIQUID (x(Si) 0.32683) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-01Liu.tdb	1809.06	HCP_A3 (x(Si) 0.04591) + LIQUID (x(Si) 0.29197) + RU2SI_C37 (x(Si) 0.33333)
RuSi-01Liu.tdb	1809.06	HCP_A3 (x(Si) 0.04588) + LIQUID (x(Si) 0.29192) + RU2SI_C37 (x(Si) 0.33333)
RuSi-01Liu.tdb	1572.86	RU2SI3 (x(Si) 0.6) + LIQUID (x(Si) 0.85977) + DIAMOND_A4 (x(Si) 1)
RuSi-01Liu.tdb	1572.86	RU2SI3 (x(Si) 0.6) + LIQUID (x(Si) 0.85979) + DIAMOND_A4 (x(Si) 1)
RuSi-01Liu.tdb	1540.32	HCP_A3 (x(Si) 0.02956) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-01Liu.tdb	1540.32	HCP_A3 (x(Si) 0.02954) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-01Liu.tdb	1540.32	HCP_A3 (x(Si) 0.02955) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-09Lon.tdb	1957.57	RUSI (x(Si) 0.5) + LIQUID (x(Si) 0.57751) + RU2SI3 (x(Si) 0.6)
RuSi-09Lon.tdb	1957.57	RUSI (x(Si) 0.5) + LIQUID (x(Si) 0.57708) + RU2SI3 (x(Si) 0.6)
RuSi-09Lon.tdb	1957.57	RUSI (x(Si) 0.5) + LIQUID (x(Si) 0.57773) + RU2SI3 (x(Si) 0.6)
RuSi-09Lon.tdb	1834.39	LIQUID (x(Si) 0.29959) + RU4SI3 (x(Si) 0.42857) + RUSI (x(Si) 0.5)
RuSi-09Lon.tdb	1834.39	LIQUID (x(Si) 0.29976) + RU4SI3 (x(Si) 0.42857) + RUSI (x(Si) 0.5)
RuSi-09Lon.tdb	1814.32	LIQUID (x(Si) 0.28047) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-09Lon.tdb	1814.32	LIQUID (x(Si) 0.28023) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-09Lon.tdb	1814.32	LIQUID (x(Si) 0.28009) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-09Lon.tdb	1810.49	HCP_A3 (x(Si) 0.05336) + LIQUID (x(Si) 0.27274) + RU2SI_C37 (x(Si) 0.33333)
RuSi-09Lon.tdb	1810.49	HCP_A3 (x(Si) 0.05331) + LIQUID (x(Si) 0.27267) + RU2SI_C37 (x(Si) 0.33333)
RuSi-09Lon.tdb	1572.11	RU2SI3 (x(Si) 0.6) + LIQUID (x(Si) 0.88472) + DIAMOND_A4 (x(Si) 1)
RuSi-09Lon.tdb	1572.11	RU2SI3 (x(Si) 0.6) + LIQUID (x(Si) 0.88473) + DIAMOND_A4 (x(Si) 1)
RuSi-09Lon.tdb	1554.24	HCP_A3 (x(Si) 0.02452) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-09Lon.tdb	1554.24	HCP_A3 (x(Si) 0.02452) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-09Lon.tdb	1554.24	HCP_A3 (x(Si) 0.02449) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-09Lon.tdb	1554.24	HCP_A3 (x(Si) 0.02451) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-95Che.tdb	1985.58	RUSI (x(Si) 0.5) + LIQUID (x(Si) 0.59493) + RU2SI3 (x(Si) 0.6)
RuSi-95Che.tdb	1985.58	RUSI (x(Si) 0.5) + LIQUID (x(Si) 0.59474) + RU2SI3 (x(Si) 0.6)
RuSi-95Che.tdb	1985.58	RUSI (x(Si) 0.5) + LIQUID (x(Si) 0.59503) + RU2SI3 (x(Si) 0.6)
RuSi-95Che.tdb	1948.13	LIQUID (x(Si) 0.39313) + RU4SI3 (x(Si) 0.42857) + RUSI (x(Si) 0.5)
RuSi-95Che.tdb	1948.12	LIQUID (x(Si) 0.39275) + RU4SI3 (x(Si) 0.42857) + RUSI (x(Si) 0.5)
RuSi-95Che.tdb	1822.74	LIQUID (x(Si) 0.32583) + RU5SI3 (x(Si) 0.375) + RU4SI3 (x(Si) 0.42857)
RuSi-95Che.tdb	1822.74	LIQUID (x(Si) 0.32594) + RU5SI3 (x(Si) 0.375) + RU4SI3 (x(Si) 0.42857)
RuSi-95Che.tdb	1822.74	LIQUID (x(Si) 0.32598) + RU5SI3 (x(Si) 0.375) + RU4SI3 (x(Si) 0.42857)
RuSi-95Che.tdb	1817.69	LIQUID (x(Si) 0.32295) + RU2SI_C37 (x(Si) 0.33333) + RU5SI3 (x(Si) 0.375)
RuSi-95Che.tdb	1817.69	LIQUID (x(Si) 0.32291) + RU2SI_C37 (x(Si) 0.33333) + RU5SI3 (x(Si) 0.375)
RuSi-95Che.tdb	1752.41	HCP_A3 (x(Si) 6.000e-5) + LIQUID (x(Si) 0.27465) + RU2SI_C37 (x(Si) 0.33333)
RuSi-95Che.tdb	1752.41	HCP_A3 (x(Si) 6.000e-5) + LIQUID (x(Si) 0.27464) + RU2SI_C37 (x(Si) 0.33333)
RuSi-95Che.tdb	1631.83	RU2SI3 (x(Si) 0.6) + LIQUID (x(Si) 0.81521) + DIAMOND_A4 (x(Si) 0.98397)
RuSi-95Che.tdb	1631.83	RU2SI3 (x(Si) 0.6) + LIQUID (x(Si) 0.81526) + DIAMOND_A4 (x(Si) 0.98398)
RuSi-95Che.tdb	1603.09	RU2SI_C37 (x(Si) 0.33333) + RU5SI3 (x(Si) 0.375) + RU4SI3 (x(Si) 0.42857)
RuSi-95Che.tdb	1506.67	HCP_A3 (x(Si) 1.000e-5) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-95Che.tdb	1506.67	HCP_A3 (x(Si) 1.000e-5) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)
RuSi-95Che.tdb	1506.67	HCP_A3 (x(Si) 1.000e-5) + RU2SI_C37 (x(Si) 0.33333) + RU4SI3 (x(Si) 0.42857)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull RuSi-01Du-LB · CALPHAD hull RuSi-01Liu · CALPHAD hull RuSi-95Che

Invariant reactions (literature)

Invariant reactions reported in the literature for the Ru–Si system (57)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
2143	congruent melting: liquid = RuSi	liquid: Ru 0.5, Si 0.5; RuSi: Ru 0.5, Si 0.5	experimental	[1] Liu 2001 cites Savitsky 1978	Table 3, p. 6, row 22 report
2023	congruent melting: liquid = RuSi	liquid: Ru 0.5, Si 0.5; RuSi: Ru 0.5, Si 0.5	unspecified	[1] Liu 2001 cites Mann 1995	Table 3, p. 6, row 20 report
2004	congruent melting: liquid = RuSi	liquid: Ru 0.5, Si 0.5; RuSi: Ru 0.5, Si 0.5	model	[1] Liu 2001	Table 3, p. 6, row 23 report
2003	congruent melting: liquid = RuSi	liquid: Ru 0.5, Si 0.5; RuSi: Ru 0.5, Si 0.5	experimental	[1] Liu 2001 cites Weitzer 1988	Table 3, p. 6, row 19 report
2003	congruent melting: liquid = RuSi	liquid: Ru 0.5, Si 0.5; RuSi: Ru 0.5, Si 0.5	experimental	[1] Liu 2001 cites Massalski 1990	Table 3, p. 6, row 21 report
2003	congruent melting: L <=> RuSi	L: Ru 0.5, Si 0.5; RuSi: Ru 0.5, Si 0.5	model	[2] Long 2009 cites Liu 2001 doi	Table 6, p. 5, row 26 report
2000	congruent melting: L <=> RuSi	L: Ru 0.5, Si 0.5; RuSi: Ru 0.5, Si 0.5	model	[2] Long 2009 cites Du 2001	Table 6, p. 5, row 27 report
1983	congruent melting: liquid = Ru2Si3	liquid: Ru 0.4, Si 0.6; Ru2Si3: Ru 0.4, Si 0.6	unspecified	[1] Liu 2001 cites Weitzer 1988	Table 3, p. 6, row 24 report
1981	congruent melting: L <=> RuSi	L: Ru 0.5, Si 0.5; RuSi: Ru 0.5, Si 0.5	model	[2] Long 2009	Table 6, p. 5, row 28 report
1976	congruent melting: L <=> Ru2Si3	L: Ru 0.4, Si 0.6; Ru2Si3: Ru 0.4, Si 0.6	model	[2] Long 2009 cites Liu 2001 doi	Table 6, p. 5, row 30 report
1976	congruent melting: liquid = Ru2Si3	liquid: Ru 0.4, Si 0.6; Ru2Si3: Ru 0.4, Si 0.6	model	[1] Liu 2001	Table 3, p. 6, row 25 report
1973	congruent melting: L <=> Ru2Si3	L: Ru 0.4, Si 0.6; Ru2Si3: Ru 0.4, Si 0.6	experimental	[2] Long 2009 cites Obrowski 1965	Table 6, p. 5, row 29 report
1973	congruent melting: L <=> RuSi	L: Ru 0.5, Si 0.5; RuSi: Ru 0.5, Si 0.5	experimental	[2] Long 2009 cites Obrowski 1965	Table 6, p. 5, row 25 report
1968	liquid = RuSi + Ru2Si3	liquid: Si 0.568; RuSi: Si 0.5; Ru2Si3: Si 0.6	model	[1] Liu 2001	Table 3, p. 6, row 3 report
1968	eutectic: L <=> RuSi + Ru2Si3	L: Si 0.568; RuSi: Ru 0.5, Si 0.5; Ru2Si3: Ru 0.4, Si 0.6	model	[2] Long 2009 cites Liu 2001 doi	Table 6, p. 5, row 18 report
1968	liquid + RuSi = Ru4Si3	RuSi: Ru 0.5, Si 0.5; Ru4Si3: Ru 0.571429, Si 0.428571	unspecified	[1] Liu 2001 cites Weitzer 1988	Table 3, p. 6, row 8 report
1963	liquid = RuSi + Ru2Si3	liquid: Si 0.56; RuSi: Si 0.5; Ru2Si3: Si 0.6	unspecified	[1] Liu 2001 cites Weitzer 1988	Table 3, p. 6, row 2 report
1960	congruent melting: L <=> Ru2Si3	L: Ru 0.4, Si 0.6; Ru2Si3: Ru 0.4, Si 0.6	model	[2] Long 2009	Table 6, p. 5, row 32 report
1959	congruent melting: L <=> Ru2Si3	L: Ru 0.4, Si 0.6; Ru2Si3: Ru 0.4, Si 0.6	model	[2] Long 2009 cites Du 2001	Table 6, p. 5, row 31 report
1958	eutectic: L <=> RuSi + Ru2Si3	L: Si 0.596; RuSi: Ru 0.5, Si 0.5; Ru2Si3: Ru 0.4, Si 0.6	model	[2] Long 2009 cites Du 2001	Table 6, p. 5, row 19 report
1958	eutectic: L <=> RuSi + Ru2Si3	L: Si 0.575; RuSi: Ru 0.5, Si 0.5; Ru2Si3: Ru 0.4, Si 0.6	model	[2] Long 2009	Table 6, p. 5, row 20 report
1953	liquid = RuSi + Ru2Si3	RuSi: Ru 0.5, Si 0.5; Ru2Si3: Ru 0.4, Si 0.6	experimental	[1] Liu 2001 cites Perring 1999 doi	Table 3, p. 6, row 1 report
1953	eutectic: L <=> RuSi + Ru2Si3	RuSi: Ru 0.5, Si 0.5; Ru2Si3: Ru 0.4, Si 0.6	experimental	[2] Long 2009 cites Perring 1999 doi	Table 6, p. 5, row 17 report
1836	liquid + RuSi = Ru4Si3	liquid: Si 0.343; RuSi: Si 0.5; Ru4Si3: Si 0.429	model	[1] Liu 2001	Table 3, p. 6, row 9 report
1836	peritectic: L + RuSi <=> Ru4Si3	L: Si 0.343; RuSi: Ru 0.5, Si 0.5; Ru4Si3: Ru 0.571429, Si 0.428571	model	[2] Long 2009 cites Liu 2001 doi	Table 6, p. 5, row 14 report
1834	peritectic: L + RuSi <=> Ru4Si3	L: Si 0.3; RuSi: Ru 0.5, Si 0.5; Ru4Si3: Ru 0.571429, Si 0.428571	model	[2] Long 2009	Table 6, p. 5, row 16 report
1833	liquid + RuSi = Ru4Si3	RuSi: Ru 0.5, Si 0.5; Ru4Si3: Ru 0.571429, Si 0.428571	experimental	[1] Liu 2001 cites Perring 1999 doi	Table 3, p. 6, row 7 report
1833	peritectic: L + RuSi <=> Ru4Si3	RuSi: Ru 0.5, Si 0.5; Ru4Si3: Ru 0.571429, Si 0.428571	experimental	[2] Long 2009 cites Perring 1999 doi	Table 6, p. 5, row 13 report
1830	peritectic: L + RuSi <=> Ru4Si3	L: Si 0.296; RuSi: Ru 0.5, Si 0.5; Ru4Si3: Ru 0.571429, Si 0.428571	model	[2] Long 2009 cites Du 2001	Table 6, p. 5, row 15 report
1822	peritectic: L + Ru4Si3 <=> Ru2Si	L: Si 0.288; Ru4Si3: Ru 0.571429, Si 0.428571; Ru2Si: Ru 0.666667, Si 0.333333	model	[2] Long 2009 cites Du 2001	Table 6, p. 5, row 7 report
1821	peritectic: L + Ru4Si3 <=> Ru2Si	L: Si 0.329; Ru4Si3: Ru 0.571429, Si 0.428571; Ru2Si: Ru 0.666667, Si 0.333333	model	[2] Long 2009 cites Liu 2001 doi	Table 6, p. 5, row 6 report
1821	liquid + Ru4Si3 = Ru2Si	liquid: Si 0.329; Ru4Si3: Si 0.429; Ru2Si: Si 0.333	model	[1] Liu 2001	Table 3, p. 6, row 11 report
1817	liquid + Ru4Si3 = Ru2Si	Ru4Si3: Ru 0.571429, Si 0.428571; Ru2Si: Ru 0.666667, Si 0.333333	experimental	[1] Liu 2001 cites Perring 1999 doi	Table 3, p. 6, row 10 report
1817	peritectic: L + Ru4Si3 <=> Ru2Si	Ru4Si3: Ru 0.571429, Si 0.428571; Ru2Si: Ru 0.666667, Si 0.333333	experimental	[2] Long 2009 cites Perring 1999 doi	Table 6, p. 5, row 5 report
1816	peritectic: L + Ru4Si3 <=> Ru2Si	L: Si 0.285; Ru4Si3: Ru 0.571429, Si 0.428571; Ru2Si: Ru 0.666667, Si 0.333333	model	[2] Long 2009	Table 6, p. 5, row 8 report
1814	eutectic: L <=> Hcp (Ru) + Ru2Si	L: Si 0.27; Ru2Si: Ru 0.666667, Si 0.333333	model	[2] Long 2009 cites Du 2001	Table 6, p. 5, row 3 report
1813	eutectic: L <=> Hcp (Ru) + Ru2Si	Ru2Si: Ru 0.666667, Si 0.333333	experimental	[2] Long 2009 cites Perring 1999 doi	Table 6, p. 5, row 1 report
1813	liquid = (Ru) + Ru2Si	Ru2Si: Ru 0.666667, Si 0.333333	experimental	[1] Liu 2001 cites Perring 1999 doi	Table 3, p. 6, row 12 report
1811	eutectic: L <=> Hcp (Ru) + Ru2Si	L: Si 0.275; Ru2Si: Ru 0.666667, Si 0.333333	model	[2] Long 2009	Table 6, p. 5, row 4 report
1809	eutectic: L <=> Hcp (Ru) + Ru2Si	L: Si 0.292; Ru2Si: Ru 0.666667, Si 0.333333	model	[2] Long 2009 cites Liu 2001 doi	Table 6, p. 5, row 2 report
1809	liquid = (Ru) + Ru2Si	liquid: Si 0.292; (Ru): Si 0.0452; Ru2Si: Si 0.333	model	[1] Liu 2001	Table 3, p. 6, row 15 report
1778	liquid = (Ru) + Ru2Si	liquid: Si 0.3; Ru2Si: Ru 0.666667, Si 0.333333	experimental	[1] Liu 2001 cites Weitzer 1988	Table 3, p. 6, row 13 report
1763	liquid = (Ru) + Ru2Si	Ru2Si: Ru 0.666667, Si 0.333333	experimental	[1] Liu 2001 cites Savitsky 1978	Table 3, p. 6, row 14 report
1643	liquid = Ru2Si3 + Diamond	liquid: Si 0.83; Ru2Si3: Si 0.6; Diamond: Si 0.97	unspecified	[1] Liu 2001 cites Weitzer 1988	Table 3, p. 6, row 5 report
1573	eutectic: L <=> Ru2Si3 + Diamond (Si)	Ru2Si3: Ru 0.4, Si 0.6	experimental	[2] Long 2009 cites Perring 1999 doi	Table 6, p. 5, row 21 report
1573	liquid = Ru2Si3 + Diamond	Ru2Si3: Ru 0.4, Si 0.6; Diamond: Si 1	experimental	[1] Liu 2001 cites Perring 1999 doi	Table 3, p. 6, row 4 report
1572	eutectic: L <=> Ru2Si3 + Diamond (Si)	L: Si 0.88; Ru2Si3: Ru 0.4, Si 0.6	model	[2] Long 2009	Table 6, p. 5, row 24 report
1571	eutectic: L <=> Ru2Si3 + Diamond (Si)	L: Si 0.86; Ru2Si3: Ru 0.4, Si 0.6	model	[2] Long 2009 cites Liu 2001 doi	Table 6, p. 5, row 22 report
1571	liquid = Ru2Si3 + Diamond	liquid: Si 0.86; Ru2Si3: Si 0.6; Diamond: Si 1	model	[1] Liu 2001	Table 3, p. 6, row 6 report
1562	eutectic: L <=> Ru2Si3 + Diamond (Si)	L: Si 0.878; Ru2Si3: Ru 0.4, Si 0.6	model	[2] Long 2009 cites Du 2001	Table 6, p. 5, row 23 report
1520	eutectic: Ru2Si <=> Hcp (Ru) + Ru4Si3	Ru2Si: Ru 0.666667, Si 0.333333; Ru4Si3: Ru 0.571429, Si 0.428571	model	[2] Long 2009 cites Du 2001	Table 6, p. 5, row 11 report
1518	Ru2Si = (Ru) + Ru4Si3	Ru2Si: Ru 0.666667, Si 0.333333; Ru4Si3: Ru 0.571429, Si 0.428571	experimental	[1] Liu 2001 cites Perring 1999 doi	Table 3, p. 6, row 16 report
1518	eutectic: Ru2Si <=> Hcp (Ru) + Ru4Si3	Ru2Si: Ru 0.666667, Si 0.333333; Ru4Si3: Ru 0.571429, Si 0.428571	model	[2] Long 2009	Table 6, p. 5, row 12 report
1518	eutectic: Ru2Si <=> Hcp (Ru) + Ru4Si3	Ru2Si: Ru 0.666667, Si 0.333333; Ru4Si3: Ru 0.571429, Si 0.428571	experimental	[2] Long 2009 cites Perring 1999 doi	Table 6, p. 5, row 9 report
1518	eutectic: Ru2Si <=> Hcp (Ru) + Ru4Si3	Ru2Si: Ru 0.666667, Si 0.333333; Ru4Si3: Ru 0.571429, Si 0.428571	model	[2] Long 2009 cites Liu 2001 doi	Table 6, p. 5, row 10 report
1518	Ru2Si = (Ru) + Ru4Si3	Ru2Si: Si 0.333; (Ru): Si 0.0281; Ru4Si3: Si 0.429	model	[1] Liu 2001	Table 3, p. 6, row 18 report
1498	Ru2Si = (Ru) + Ru4Si3	Ru2Si: Ru 0.666667, Si 0.333333; Ru4Si3: Ru 0.571429, Si 0.428571	experimental	[1] Liu 2001 cites Weitzer 1988	Table 3, p. 6, row 17 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, Ru–Si system (40)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
Ru2Si	Ru2Si	-38.7 kJ/mol-atom		model	-39.077 (mp-aaaaaovp)	-38.314 (oqmd-8148)	[1] Liu 2001	Table 1, p. 2, row 25 report
Ru2Si	Ru2Si	-37.6 kJ/mol-atom		model	-39.077 (mp-aaaaaovp)	-38.314 (oqmd-8148)	[1] Liu 2001 cites Pasturel 1984	Table 1, p. 2, row 23 report
Ru2Si	Ru2Si	-29 kJ/mol-atom		model	-39.077 (mp-aaaaaovp)	-38.314 (oqmd-8148)	[1] Liu 2001 cites F 1988	Table 1, p. 2, row 22 report
Ru2Si	Ru2Si	-22.2 kJ/mol-atom		model	-39.077 (mp-aaaaaovp)	-38.314 (oqmd-8148)	[1] Liu 2001 cites Searcy 1962	Table 1, p. 2, row 24 report
Ru2Si3	Ru2Si3	-60.7 kJ/mol-atom ± 1.7	298.15	experimental	-61.195 (mp-aaaabgvo)	-60.271 (oqmd-2149)	[2] Long 2009 cites Perring 1998 doi	Table 1, p. 2, row 12 report
Ru2Si3	Ru2Si3	-60.7 kJ/mol-atom ± 1.7	298.15	experimental	-61.195 (mp-aaaabgvo)	-60.271 (oqmd-2149)	[1] Liu 2001 cites Meschel 1998 doi	Table 1, p. 2, row 13 report
Ru2Si3	Ru2Si3	-53.053 kJ/mol-atom	298.15	model	-61.195 (mp-aaaabgvo)	-60.271 (oqmd-2149)	[2] Long 2009	Table 1, p. 2, row 15 report
Ru2Si3	Ru2Si3	-50.3 kJ/mol-atom ± 1	1704	experimental	-61.195 (mp-aaaabgvo)	-60.271 (oqmd-2149)	[1] Liu 2001 cites Perring 1997 doi	Table 1, p. 2, row 14 report
Ru2Si3	Ru2Si3	-50.3 kJ/mol-atom ± 1	1704	experimental	-61.195 (mp-aaaabgvo)	-60.271 (oqmd-2149)	[2] Long 2009 cites Perring 1997 doi	Table 1, p. 2, row 11 report
Ru2Si3	Ru2Si3	-49.2 kJ/mol-atom	298.15	experimental	-61.195 (mp-aaaabgvo)	-60.271 (oqmd-2149)	[1] Liu 2001 cites Kuntz 1997 doi	Table 1, p. 2, row 15 report
Ru2Si3	Ru2Si3	-49.06 kJ/mol-atom		model	-61.195 (mp-aaaabgvo)	-60.271 (oqmd-2149)	[1] Liu 2001	Table 1, p. 2, row 19 report
Ru2Si3	Ru2Si3	-49.06 kJ/mol-atom	298.15	model	-61.195 (mp-aaaabgvo)	-60.271 (oqmd-2149)	[2] Long 2009 cites Liu 2001 doi	Table 1, p. 2, row 14 report
Ru2Si3	Ru2Si3	-47.723 kJ/mol-atom	298.15	model	-61.195 (mp-aaaabgvo)	-60.271 (oqmd-2149)	[2] Long 2009 cites Du 2001	Table 1, p. 2, row 13 report
Ru2Si3	Ru2Si3	-26.8 kJ/mol-atom		model	-61.195 (mp-aaaabgvo)	-60.271 (oqmd-2149)	[1] Liu 2001 cites Petersson 1982 doi	Table 1, p. 2, row 18 report
Ru2Si3	Ru2Si3	-26.8 kJ/mol-atom		unspecified	-61.195 (mp-aaaabgvo)	-60.271 (oqmd-2149)	[1] Liu 2001 cites Mann 1995	Table 1, p. 2, row 16 report
Ru2Si3	Ru2Si3	-26 kJ/mol-atom		model	-61.195 (mp-aaaabgvo)	-60.271 (oqmd-2149)	[1] Liu 2001 cites F 1988	Table 1, p. 2, row 17 report
Ru4Si3	Ru4Si3	-57.561 kJ/mol-atom		model	-53.041 (mp-aaabdbbg)	-52.175 (oqmd-5838)	[1] Liu 2001	Table 1, p. 2, row 21 report
Ru4Si3	Ru4Si3	-57.561 kJ/mol-atom	298.15	model	-53.041 (mp-aaabdbbg)	-52.175 (oqmd-5838)	[2] Long 2009 cites Liu 2001 doi	Table 1, p. 2, row 3 report
Ru4Si3	Ru4Si3	-55.011 kJ/mol-atom	298.15	model	-53.041 (mp-aaabdbbg)	-52.175 (oqmd-5838)	[2] Long 2009	Table 1, p. 2, row 4 report
Ru4Si3	Ru4Si3	-47.788 kJ/mol-atom	298.15	model	-53.041 (mp-aaabdbbg)	-52.175 (oqmd-5838)	[2] Long 2009 cites Du 2001	Table 1, p. 2, row 2 report
Ru4Si3	Ru4Si3	-45.9 kJ/mol-atom ± 0.6	1505	experimental	-53.041 (mp-aaabdbbg)	-52.175 (oqmd-5838)	[2] Long 2009 cites Perring 1997 doi	Table 1, p. 2, row 1 report
Ru4Si3	Ru4Si3	-45.9 kJ/mol-atom ± 0.6	1505	experimental	-53.041 (mp-aaabdbbg)	-52.175 (oqmd-5838)	[1] Liu 2001 cites Perring 1997 doi	Table 1, p. 2, row 20 report
RuSi	RuSi	-58.3 kJ/mol-atom ± 2.1	298.15	experimental	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[1] Liu 2001 cites Meschel 1998 doi	Table 1, p. 2, row 1 report
RuSi	RuSi	-58.3 kJ/mol-atom ± 2.1	298.15	experimental	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[2] Long 2009 cites Meschel 1998 doi	Table 1, p. 2, row 6 report
RuSi	RuSi	-58.1 kJ/mol-atom ± 3.7	298.15	experimental	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[2] Long 2009 cites Topor 1988	Table 1, p. 2, row 7 report
RuSi	RuSi	-58.1 kJ/mol-atom ± 3.7	298.15	experimental	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[1] Liu 2001 cites Topor 1988	Table 1, p. 2, row 4 report
RuSi	RuSi	-57.7 kJ/mol-atom ± 1.4	1505	experimental	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[2] Long 2009 cites Perring 1997 doi	Table 1, p. 2, row 5 report
RuSi	RuSi	-57.7 kJ/mol-atom ± 1.4	1505	experimental	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[1] Liu 2001 cites Perring 1997 doi	Table 1, p. 2, row 2 report
RuSi	RuSi	-57.641 kJ/mol-atom	298.15	model	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[2] Long 2009	Table 1, p. 2, row 10 report
RuSi	RuSi	-56.5 kJ/mol-atom	298.15	experimental	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[1] Liu 2001 cites Kuntz 1997 doi	Table 1, p. 2, row 3 report
RuSi	RuSi	-56.454 kJ/mol-atom	298.15	model	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[2] Long 2009 cites Liu 2001 doi	Table 1, p. 2, row 9 report
RuSi	RuSi	-56.454 kJ/mol-atom		model	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[1] Liu 2001	Table 1, p. 2, row 12 report
RuSi	RuSi	-52.988 kJ/mol-atom	298.15	model	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[2] Long 2009 cites Du 2001	Table 1, p. 2, row 8 report
RuSi	RuSi	-43.9 kJ/mol-atom		model	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[1] Liu 2001 cites Pasturel 1984	Table 1, p. 2, row 6 report
RuSi	RuSi	-42 kJ/mol-atom		model	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[1] Liu 2001 cites Chart 1973	Table 1, p. 2, row 10 report
RuSi	RuSi	-39.2 kJ/mol-atom		model	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[1] Liu 2001 cites Machlin 1981 doi	Table 1, p. 2, row 8 report
RuSi	RuSi	-33.4 kJ/mol-atom	298.15	experimental	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[1] Liu 2001 cites Pretorius 1978 doi	Table 1, p. 2, row 9 report
RuSi	RuSi	-33.4 kJ/mol-atom		model	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[1] Liu 2001 cites Searcy 1962	Table 1, p. 2, row 11 report
RuSi	RuSi	-33.2 kJ/mol-atom		model	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[1] Liu 2001 cites Petersson 1982 doi	Table 1, p. 2, row 7 report
RuSi	RuSi	-32 kJ/mol-atom		model	-62.629 (mp-aaaaaahh)	-61.662 (oqmd-14277)	[1] Liu 2001 cites F 1988	Table 1, p. 2, row 5 report

Other properties

Phase transition (1)

Phase transition, Ru–Si system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	1235 K	1235	other	experimental	[2] Long 2009 cites Ivanenko 2002 doi	p. 1 report	Recently, a new phase, RuSi2 , has been observed in the form of inclusions in Ru2 Si3 single crystals and formed peritectoidally at 1235 K [20].

Sources

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

Y.Q. Liu, G. Shao, K.P. Homewood, Thermodynamic assessment of the Ru–Si and Os–Si systems, Journal of Alloys and Compounds 320, 72-79 (2001). doi:10.1016/s0925-8388(01)00931-8
Z.H. Long, H.S. Liu, Z.P. Jin, Thermodynamic description of Ru–Ge–Si ternary system, Journal of Alloys and Compounds 479, 262-267 (2009). doi:10.1016/j.jallcom.2009.01.079

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}
}