Si–Zr system

66 accepted literature values from 3 paper(s) (experimental 13, model 53); 2 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (16) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	13
model	53

Accepted values by property group
Property group	Values
invariant reaction	29
phase transition	7
formation	30

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
SiZr-09Che.tdb	H.M. Chen, F. Zheng, H.S. Liu, L.B. Liu, Z.P. Jin, J. Alloys Compd., 468, 209-16(2009). doi:10.1016/j.jallcom.2008.01.061	`e921a43da80c0a49589b2cb062309526f47b3ae36542ed7d8c74d090ed64f171`	viewer · TDB · JSON
SiZr-94Gue-LB.tdb	C. Gueneau, C. Servant, I. Ansara, N. Dupin, Calphad, 18, 319-27(1994). doi:10.1016/0364-5916(94)90036-1	`92268ff222aab9da3e7bb6db1562bcdea53428d397b85eabd4dc4af810b613aa`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
SiZr-09Che.tdb	2485.45	SI4ZR5_BETA (x(Zr) 0.55556) + SI2ZR3_D5A (x(Zr) 0.6) + LIQUID (x(Zr) 0.63087)
SiZr-09Che.tdb	2485.45	SI4ZR5_BETA (x(Zr) 0.55556) + SI2ZR3_D5A (x(Zr) 0.6) + LIQUID (x(Zr) 0.63052)
SiZr-09Che.tdb	2485.45	SI4ZR5_BETA (x(Zr) 0.55556) + SI2ZR3_D5A (x(Zr) 0.6) + LIQUID (x(Zr) 0.63091)
SiZr-09Che.tdb	2480.67	LIQUID (x(Zr) 0.47269) + SIZR_B27 (x(Zr) 0.5) + SI4ZR5_BETA (x(Zr) 0.55556)
SiZr-09Che.tdb	2480.67	LIQUID (x(Zr) 0.47241) + SIZR_B27 (x(Zr) 0.5) + SI4ZR5_BETA (x(Zr) 0.55556)
SiZr-09Che.tdb	2449.27	SI2ZR3_D5A (x(Zr) 0.6) + SI3ZR5_D88 (x(Zr) 0.625) + LIQUID (x(Zr) 0.67807)
SiZr-09Che.tdb	2449.26	SI2ZR3_D5A (x(Zr) 0.6) + SI3ZR5_D88 (x(Zr) 0.625) + LIQUID (x(Zr) 0.67782)
SiZr-09Che.tdb	2449.26	SI2ZR3_D5A (x(Zr) 0.6) + SI3ZR5_D88 (x(Zr) 0.625) + LIQUID (x(Zr) 0.67769)
SiZr-09Che.tdb	2197.41	SI3ZR5_D88 (x(Zr) 0.625) + SIZR2_C16 (x(Zr) 0.66667) + LIQUID (x(Zr) 0.80578)
SiZr-09Che.tdb	2197.41	SI3ZR5_D88 (x(Zr) 0.625) + SIZR2_C16 (x(Zr) 0.66667) + LIQUID (x(Zr) 0.80575)
SiZr-09Che.tdb	2197.41	SI3ZR5_D88 (x(Zr) 0.625) + SIZR2_C16 (x(Zr) 0.66667) + LIQUID (x(Zr) 0.80582)
SiZr-09Che.tdb	2131.3	SI4ZR5_BETA (x(Zr) 0.55556) + SI4ZR5_ALPHA (x(Zr) 0.55556) + SI2ZR3_D5A (x(Zr) 0.6)
SiZr-09Che.tdb	2131.3	SIZR_B27 (x(Zr) 0.5) + SI4ZR5_BETA (x(Zr) 0.55556) + SI4ZR5_ALPHA (x(Zr) 0.55556)
SiZr-09Che.tdb	2018.89	SI2ZR3_D5A (x(Zr) 0.6) + SI3ZR5_D88 (x(Zr) 0.625) + SIZR2_C16 (x(Zr) 0.66667)
SiZr-09Che.tdb	1924.42	SIZR2_C16 (x(Zr) 0.66667) + SIZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.89589)
SiZr-09Che.tdb	1924.42	SIZR2_C16 (x(Zr) 0.66667) + SIZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.89584)
SiZr-09Che.tdb	1924.42	SIZR2_C16 (x(Zr) 0.66667) + SIZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.89591)
SiZr-09Che.tdb	1893.32	LIQUID (x(Zr) 0.19662) + SI2ZR_C49 (x(Zr) 0.33333) + SIZR_B27 (x(Zr) 0.5)
SiZr-09Che.tdb	1893.32	LIQUID (x(Zr) 0.19661) + SI2ZR_C49 (x(Zr) 0.33333) + SIZR_B27 (x(Zr) 0.5)
SiZr-09Che.tdb	1893.32	LIQUID (x(Zr) 0.19655) + SI2ZR_C49 (x(Zr) 0.33333) + SIZR_B27 (x(Zr) 0.5)
SiZr-09Che.tdb	1844	SIZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.92045) + BCC_A2 (x(Zr) 1)
SiZr-09Che.tdb	1844	SIZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.92045) + BCC_A2 (x(Zr) 1)
SiZr-09Che.tdb	1844	SIZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.9205) + BCC_A2 (x(Zr) 1)
SiZr-09Che.tdb	1730.72	SIZR_B27 (x(Zr) 0.5) + SIZR_B33 (x(Zr) 0.5) + SI4ZR5_ALPHA (x(Zr) 0.55556)
SiZr-09Che.tdb	1730.72	SI2ZR_C49 (x(Zr) 0.33333) + SIZR_B33 (x(Zr) 0.5) + SIZR_B27 (x(Zr) 0.5)
SiZr-09Che.tdb	1618.69	DIAMOND_A4 (x(Zr) 0) + LIQUID (x(Zr) 0.08207) + SI2ZR_C49 (x(Zr) 0.33333)
SiZr-09Che.tdb	1618.69	DIAMOND_A4 (x(Zr) 0) + LIQUID (x(Zr) 0.08189) + SI2ZR_C49 (x(Zr) 0.33333)
SiZr-09Che.tdb	1618.69	DIAMOND_A4 (x(Zr) 0) + LIQUID (x(Zr) 0.08189) + SI2ZR_C49 (x(Zr) 0.33333)
SiZr-09Che.tdb	1139	SIZR3 (x(Zr) 0.75) + HCP_A3 (x(Zr) 1) + BCC_A2 (x(Zr) 1)
SiZr-94Gue-LB.tdb	2491.54	SI4ZR5 (x(Zr) 0.55556) + SI2ZR3_D5A (x(Zr) 0.6) + LIQUID (x(Zr) 0.62895)
SiZr-94Gue-LB.tdb	2491.54	SI4ZR5 (x(Zr) 0.55556) + SI2ZR3_D5A (x(Zr) 0.6) + LIQUID (x(Zr) 0.62896)
SiZr-94Gue-LB.tdb	2491.54	SI4ZR5 (x(Zr) 0.55556) + SI2ZR3_D5A (x(Zr) 0.6) + LIQUID (x(Zr) 0.62854)
SiZr-94Gue-LB.tdb	2476.99	LIQUID (x(Zr) 0.46282) + SIZR (x(Zr) 0.5) + SI4ZR5 (x(Zr) 0.55556)
SiZr-94Gue-LB.tdb	2476.99	LIQUID (x(Zr) 0.46304) + SIZR (x(Zr) 0.5) + SI4ZR5 (x(Zr) 0.55556)
SiZr-94Gue-LB.tdb	2455.39	SI2ZR3_D5A (x(Zr) 0.6) + SI3ZR5_D88 (x(Zr) 0.625) + LIQUID (x(Zr) 0.67744)
SiZr-94Gue-LB.tdb	2455.39	SI2ZR3_D5A (x(Zr) 0.6) + SI3ZR5_D88 (x(Zr) 0.625) + LIQUID (x(Zr) 0.67675)
SiZr-94Gue-LB.tdb	2455.38	SI2ZR3_D5A (x(Zr) 0.6) + SI3ZR5_D88 (x(Zr) 0.625) + LIQUID (x(Zr) 0.6772)
SiZr-94Gue-LB.tdb	2200.15	SI3ZR5_D88 (x(Zr) 0.625) + SIZR2_C16 (x(Zr) 0.66667) + LIQUID (x(Zr) 0.80352)
SiZr-94Gue-LB.tdb	2200.15	SI3ZR5_D88 (x(Zr) 0.625) + SIZR2_C16 (x(Zr) 0.66667) + LIQUID (x(Zr) 0.80348)
SiZr-94Gue-LB.tdb	2200.15	SI3ZR5_D88 (x(Zr) 0.625) + SIZR2_C16 (x(Zr) 0.66667) + LIQUID (x(Zr) 0.80361)
SiZr-94Gue-LB.tdb	2025.13	SI2ZR3_D5A (x(Zr) 0.6) + SI3ZR5_D88 (x(Zr) 0.625) + SIZR2_C16 (x(Zr) 0.66667)
SiZr-94Gue-LB.tdb	1927.47	SIZR2_C16 (x(Zr) 0.66667) + SIZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.88601)
SiZr-94Gue-LB.tdb	1927.47	SIZR2_C16 (x(Zr) 0.66667) + SIZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.886)
SiZr-94Gue-LB.tdb	1927.47	SIZR2_C16 (x(Zr) 0.66667) + SIZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.88603)
SiZr-94Gue-LB.tdb	1900.29	LIQUID (x(Zr) 0.17017) + SI2ZR_C49 (x(Zr) 0.33333) + SIZR (x(Zr) 0.5)
SiZr-94Gue-LB.tdb	1900.28	LIQUID (x(Zr) 0.17001) + SI2ZR_C49 (x(Zr) 0.33333) + SIZR (x(Zr) 0.5)
SiZr-94Gue-LB.tdb	1900.28	LIQUID (x(Zr) 0.16993) + SI2ZR_C49 (x(Zr) 0.33333) + SIZR (x(Zr) 0.5)
SiZr-94Gue-LB.tdb	1814.24	SIZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.91615) + BCC_A2 (x(Zr) 1)
SiZr-94Gue-LB.tdb	1814.24	SIZR3 (x(Zr) 0.75) + LIQUID (x(Zr) 0.91618) + BCC_A2 (x(Zr) 1)
SiZr-94Gue-LB.tdb	1634.58	DIAMOND_A4 (x(Zr) 0) + LIQUID (x(Zr) 0.07339) + SI2ZR_C49 (x(Zr) 0.33333)
SiZr-94Gue-LB.tdb	1634.58	DIAMOND_A4 (x(Zr) 0) + LIQUID (x(Zr) 0.0733) + SI2ZR_C49 (x(Zr) 0.33333)
SiZr-94Gue-LB.tdb	1634.58	DIAMOND_A4 (x(Zr) 0) + LIQUID (x(Zr) 0.07322) + SI2ZR_C49 (x(Zr) 0.33333)
SiZr-94Gue-LB.tdb	1139	SIZR3 (x(Zr) 0.75) + HCP_A3 (x(Zr) 1) + BCC_A2 (x(Zr) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull SiZr-94Gue-LB

Invariant reactions (literature)

Invariant reactions reported in the literature for the Si–Zr system (29)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
2491.5	peritectic: Liquid + Si4Zr5 -> Si2Zr3	L: Zr 0.629; Si4Zr5: Zr 0.555; Si2Zr3: Zr 0.6	model	[1] (ed.) 1998	Table I, p. 298, row 4 report
2488.15	peritectic: Liquid + β-Si4Zr5 -> Si2Zr3	L: Zr 0.64; β-Si4Zr5: Zr 0.555556; Si2Zr3: Zr 0.6	experimental	[2] Chen 2009 cites Alcock 1976	Table 5, p. 6, row 7 report
2485.4	peritectic: Liquid + β-Si4Zr5 -> Si2Zr3	L: Zr 0.631; β-Si4Zr5: Zr 0.555556; Si2Zr3: Zr 0.6	model	[2] Chen 2009	Table 5, p. 6, row 8 report
2483.15	peritectic: Liquid + β-Si4Zr5 -> β-SiZr	L: Zr 0.46; β-Si4Zr5: Zr 0.555556; β-SiZr: Zr 0.5	experimental	[2] Chen 2009 cites Alcock 1976	Table 5, p. 6, row 5 report
2480.3	peritectic: Liquid + β-Si4Zr5 -> β-SiZr	L: Zr 0.472; β-Si4Zr5: Zr 0.555556; β-SiZr: Zr 0.5	model	[2] Chen 2009	Table 5, p. 6, row 6 report
2477	peritectic: Liquid + Si4Zr5 -> SiZr	L: Zr 0.463; Si4Zr5: Zr 0.555; SiZr: Zr 0.5	model	[1] (ed.) 1998	Table I, p. 298, row 3 report
2455.4	peritectic: Liquid + Si2Zr3 -> Si3Zr5	L: Zr 0.677; Si2Zr3: Zr 0.6; Si3Zr5: Zr 0.675	model	[1] (ed.) 1998	Table I, p. 298, row 5 report
2453	peritectic: Liquid + Si2Zr3 -> Si3Zr5	L: Zr 0.69; Si2Zr3: Zr 0.6; Si3Zr5: Zr 0.625	experimental	[2] Chen 2009 cites Alcock 1976	Table 5, p. 6, row 9 report
2449.3	peritectic: Liquid + Si2Zr3 -> Si3Zr5	L: Zr 0.678; Si2Zr3: Zr 0.6; Si3Zr5: Zr 0.625	model	[2] Chen 2009	Table 5, p. 6, row 10 report
2200	peritectic: Liquid + Si3Zr5 -> SiZr2	L: Zr 0.803; Si3Zr5: Zr 0.625; SiZr2: Zr 0.666	model	[1] (ed.) 1998	Table I, p. 298, row 6 report
2198.15	peritectic: Liquid + Si3Zr5 -> SiZr2	L: Zr 0.82; Si3Zr5: Zr 0.625; SiZr2: Zr 0.666667	experimental	[2] Chen 2009 cites Alcock 1976	Table 5, p. 6, row 11 report
2196.98	peritectic: Liquid + Si3Zr5 -> SiZr2	L: Zr 0.806; Si3Zr5: Zr 0.625; SiZr2: Zr 0.666667	model	[2] Chen 2009	Table 5, p. 6, row 12 report
2025.2	eutectoid: Si3Zr5 -> Si2Zr3 + SiZr2	Si3Zr5: Zr 0.625; Si2Zr3: Zr 0.6; SiZr2: Zr 0.666	model	[1] (ed.) 1998	Table I, p. 298, row 10 report
2018.3	eutectoid: Si3Zr5 -> Si2Zr3+SiZr2	Si3Zr5: Zr 0.625; Si2Zr3: Zr 0.6; SiZr2: Zr 0.666667	model	[2] Chen 2009	Table 5, p. 6, row 20 report
2018.15	eutectoid: Si3Zr5 -> Si2Zr3+SiZr2	Si3Zr5: Zr 0.625; Si2Zr3: Zr 0.6; SiZr2: Zr 0.666667	experimental	[2] Chen 2009 cites Alcock 1976	Table 5, p. 6, row 19 report
1927.4	peritectic: Liquid + SiZr2 -> SiZr3	L: Zr 0.886; SiZr2: Zr 0.666; SiZr3: Zr 0.75	model	[1] (ed.) 1998	Table I, p. 298, row 7 report
1924.5	peritectic: Liquid + SiZr2 -> SiZr3	L: Zr 0.896; SiZr2: Zr 0.666667; SiZr3: Zr 0.75	model	[2] Chen 2009	Table 5, p. 6, row 14 report
1923.15	peritectic: Liquid + SiZr2 -> SiZr3	L: Zr 0.87; SiZr2: Zr 0.666667; SiZr3: Zr 0.75	experimental	[2] Chen 2009 cites Alcock 1976	Table 5, p. 6, row 13 report
1900.3	peritectic: Liquid + SiZr -> Si2Zr	L: Zr 0.17; SiZr: Zr 0.5; Si2Zr: Zr 0.333	model	[1] (ed.) 1998	Table I, p. 298, row 2 report
1893.3	peritectic: Liquid + β-SiZr -> Si2Zr	L: Zr 0.197; β-SiZr: Zr 0.5; Si2Zr: Zr 0.333333	model	[2] Chen 2009	Table 5, p. 6, row 4 report
1893.15	peritectic: Liquid + β-SiZr -> Si2Zr	L: Zr 0.25; β-SiZr: Zr 0.5; Si2Zr: Zr 0.333333	experimental	[2] Chen 2009 cites Alcock 1976	Table 5, p. 6, row 3 report
1843.96	eutectic: Liquid -> bcc-Zr+SiZr3	L: Zr 0.92; SiZr3: Zr 0.75	model	[2] Chen 2009	Table 5, p. 6, row 16 report
1843.15	eutectic: Liquid -> bcc-Zr+SiZr3	L: Zr 0.91; SiZr3: Zr 0.75	experimental	[2] Chen 2009 cites Alcock 1976	Table 5, p. 6, row 15 report
1814.2	eutectic: Liquid -> SiZr3 + bcc-A2	L: Zr 0.916; SiZr3: Zr 0.75; bcc-A2: Zr 1	model	[1] (ed.) 1998	Table I, p. 298, row 8 report
1634.6	eutectic: Liquid -> diamond + Si2Zr	L: Zr 0.073; diamond: Zr 0; Si2Zr: Zr 0.333	model	[1] (ed.) 1998	Table I, p. 298, row 1 report
1628.15	eutectic: Liquid -> Si+Si2Zr	L: Zr 0.1; Si: Zr 0; Si2Zr: Zr 0.333333	experimental	[2] Chen 2009 cites Okamoto 1990 doi	Table 5, p. 6, row 1 report
1618.7	eutectic: Liquid -> Si+Si2Zr	L: Zr 0.0819; Si: Zr 0; Si2Zr: Zr 0.333333	model	[2] Chen 2009	Table 5, p. 6, row 2 report
1139	other: Bcc-Zr -> hcp-Zr+SiZr3	SiZr3: Zr 0.75	model	[2] Chen 2009	Table 5, p. 6, row 18 report
1138.15	other: Bcc-Zr -> hcp-Zr+SiZr3	SiZr3: Zr 0.75	experimental	[2] Chen 2009 cites Alcock 1976	Table 5, 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, Si–Zr system (30)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
Si2Zr	Si2Zr	-56.2933 kJ/mol-atom	298.15	model	-57.935 (mp-aaaaacgh)	-63.036 (oqmd-3570)	[3] Gueneau 1994	Table II, p. 4, row 5 report
Si2Zr	Si2Zr	-53.086 kJ/mol-atom ± 12.54	298.15	model	-57.935 (mp-aaaaacgh)	-63.036 (oqmd-3570)	[3] Gueneau 1994 cites ref. 73Hul	Table II, p. 4, row 3 report
Si2Zr	Si2Zr	-51.308 kJ/mol-atom ± 0.973333	298.15	model	-57.935 (mp-aaaaacgh)	-63.036 (oqmd-3570)	[3] Gueneau 1994 cites ref. 78Mas	Table II, p. 4, row 4 report
Si2Zr	Si2Zr	-50.2993 kJ/mol-atom	298.15	model	-57.935 (mp-aaaaacgh)	-63.036 (oqmd-3570)	[3] Gueneau 1994 cites ref. 73Bol	Table II, p. 4, row 2 report
Si2Zr	Si2Zr	-49.8813 kJ/mol-atom	298.15	model	-57.935 (mp-aaaaacgh)	-63.036 (oqmd-3570)	[3] Gueneau 1994 cites ref. 55Rob	Table II, p. 4, row 1 report
Si2Zr3	Si2Zr3	-88.812 kJ/mol-atom	298.15	model	-82.475 (mp-aaacqroa)	-85.385 (oqmd-1364772)	[3] Gueneau 1994	Table II, p. 4, row 14 report
Si2Zr3	Si2Zr3	-76.912 kJ/mol-atom	298.15	model	-82.475 (mp-aaacqroa)	-85.385 (oqmd-1364772)	[3] Gueneau 1994 cites ref. 73Hul	Table II, p. 4, row 13 report
Si3Zr5	Si3Zr5	-112.968 kJ/mol-atom ± 4.1875	298.15	model	-76.551 (mp-aaabgikp)	-79.039 (oqmd-31218)	[3] Gueneau 1994 cites ref. 65Gol	Table II, p. 4, row 16 report
Si3Zr5	Si3Zr5	-78.175 kJ/mol-atom	298.15	model	-76.551 (mp-aaabgikp)	-79.039 (oqmd-31218)	[3] Gueneau 1994	Table II, p. 4, row 19 report
Si3Zr5	Si3Zr5	-76.494 kJ/mol-atom	298.15	model	-76.551 (mp-aaabgikp)	-79.039 (oqmd-31218)	[3] Gueneau 1994 cites ref. 55Rob	Table II, p. 4, row 15 report
Si3Zr5	Si3Zr5	-71.896 kJ/mol-atom ± 12.54	298.15	model	-76.551 (mp-aaabgikp)	-79.039 (oqmd-31218)	[3] Gueneau 1994 cites ref. 73Hul	Table II, p. 4, row 17 report
Si3Zr5	Si3Zr5	-71.65 kJ/mol-atom ± 4.79	298.15	model	-76.551 (mp-aaabgikp)	-79.039 (oqmd-31218)	[3] Gueneau 1994 cites ref. 90Top	Table II, p. 4, row 18 report
Si4Zr5	Si4Zr5	-88.3 kJ/mol-atom	298.15	model	-84.244 (mp-aaaaabye)	-87.268 (oqmd-3883)	[3] Gueneau 1994	Table II, p. 4, row 12 report
Si5Zr6		-96.2273 kJ/mol-atom ± 3.88182	298.15	model			[3] Gueneau 1994 cites ref. 65Gol	Table II, p. 4, row 26 report
Si5Zr6		-77.748 kJ/mol-atom	298.15	model			[3] Gueneau 1994 cites ref. 73Hul	Table II, p. 4, row 27 report
Si5Zr6		-77.33 kJ/mol-atom	298.15	model			[3] Gueneau 1994 cites ref. 55Rob	Table II, p. 4, row 25 report
Si5Zr6#		-1058.5 kJ/mol (basis unstated) ± 42.7	298.15	model			[3] Gueneau 1994 cites ref. 65Gol	Table II, p. 4, row 26 report
Si5Zr6#		-855.228 kJ/mol (basis unstated)	298.15	model			[3] Gueneau 1994 cites ref. 73Hul	Table II, p. 4, row 27 report
Si5Zr6#		-850.63 kJ/mol (basis unstated)	298.15	model			[3] Gueneau 1994 cites ref. 55Rob	Table II, p. 4, row 25 report
SiZr	SiZr	-129.7 kJ/mol-atom ± 4.2	298.15	model	-86.746 (mp-aaaaaqtm)	-90.225 (oqmd-31074)	[3] Gueneau 1994 cites ref. 65Gol	Table II, p. 4, row 7 report
SiZr	SiZr	-83.67 kJ/mol-atom	298.15	model	-86.746 (mp-aaaaaqtm)	-90.225 (oqmd-31074)	[3] Gueneau 1994	Table II, p. 4, row 11 report
SiZr	SiZr	-77.33 kJ/mol-atom ± 12.54	298.15	model	-86.746 (mp-aaaaaqtm)	-90.225 (oqmd-31074)	[3] Gueneau 1994 cites ref. 73Hul	Table II, p. 4, row 9 report
SiZr	SiZr	-74.822 kJ/mol-atom ± 1.46	298.15	model	-86.746 (mp-aaaaaqtm)	-90.225 (oqmd-31074)	[3] Gueneau 1994 cites ref. 78Mas	Table II, p. 4, row 10 report
SiZr	SiZr	-73.777 kJ/mol-atom	298.15	model	-86.746 (mp-aaaaaqtm)	-90.225 (oqmd-31074)	[3] Gueneau 1994 cites ref. 73Bol	Table II, p. 4, row 8 report
SiZr	SiZr	-73.772 kJ/mol-atom	298.15	model	-86.746 (mp-aaaaaqtm)	-90.225 (oqmd-31074)	[3] Gueneau 1994 cites ref. 55Rob	Table II, p. 4, row 6 report
SiZr2	SiZr2	-112.967 kJ/mol-atom ± 4.18333	298.15	model	-72.863 (mp-aaaaabxe)	-75.334 (oqmd-7792)	[3] Gueneau 1994 cites ref. 65Gol	Table II, p. 4, row 20 report
SiZr2	SiZr2	-77.06 kJ/mol-atom	298.15	model	-72.863 (mp-aaaaabxe)	-75.334 (oqmd-7792)	[3] Gueneau 1994	Table II, p. 4, row 22 report
SiZr2	SiZr2	-69.388 kJ/mol-atom	298.15	model	-72.863 (mp-aaaaabxe)	-75.334 (oqmd-7792)	[3] Gueneau 1994 cites ref. 73Hul	Table II, p. 4, row 21 report
SiZr3	SiZr3	-60.82 kJ/mol-atom	298.15	model	-52.992 (mp-aaacqimy)	-54.922 (oqmd-2053245)	[3] Gueneau 1994	Table II, p. 4, row 24 report
SiZr3	SiZr3	-54.34 kJ/mol-atom	298.15	model	-52.992 (mp-aaacqimy)	-54.922 (oqmd-2053245)	[3] Gueneau 1994 cites ref. 73Hul	Table II, p. 4, row 23 report

Other properties

Phase transition (7)

Phase transition, Si–Zr system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	1732.5 K	1732.5	polymorphic: α-SiZr -> β-SiZr α-SiZr: Zr 0.5; β-SiZr: Zr 0.5	model	[2] Chen 2009	Table 5, p. 6, row 24 report
Phase transition	1733.15 K	1733.15	polymorphic: α-SiZr -> β-SiZr α-SiZr: Zr 0.5; β-SiZr: Zr 0.5	experimental	[2] Chen 2009 cites Alcock 1976	Table 5, p. 6, row 23 report
Phase transition	2132.5 K	2132.5	polymorphic: α-Si4Zr5 -> β-Si4Zr5 α-Si4Zr5: Zr 0.555556; β-Si4Zr5: Zr 0.555556	model	[2] Chen 2009	Table 5, p. 6, row 26 report
Phase transition	2133.15 K	2133.15	polymorphic: α-Si4Zr5 -> β-Si4Zr5 α-Si4Zr5: Zr 0.555556; β-Si4Zr5: Zr 0.555556	experimental	[2] Chen 2009 cites Alcock 1976	Table 5, p. 6, row 25 report
Phase transition	2523 K	2523	congruent melting: Liquid -> β-Si4Zr5 L: Zr 0.556; β-Si4Zr5: Zr 0.555556	experimental	[2] Chen 2009 cites Alcock 1976	Table 5, p. 6, row 21 report
Phase transition	2525 K	2525	congruent melting: Liquid -> β-Si4Zr5 L: Zr 0.556; β-Si4Zr5: Zr 0.555556	model	[2] Chen 2009	Table 5, p. 6, row 22 report
Phase transition	2527 K	2527	congruent melting: Liquid -> Si4Zr5 L: Zr 0.556; Si4Zr5: Zr 0.556	model	[1] (ed.) 1998	Table I, p. 298, row 11 report

Sources

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

I. Ansara, A. T. Dinsdale, M. H. Rand (eds.), COST 507: Thermochemical database for light metal alloys, Volume 2, EUR 18499 EN, Office for Official Publications of the European Communities, Luxembourg (1998), ISBN 92-828-3902-8.
H.M. Chen, F. Zheng, H.S. Liu, L.B. Liu, Z.P. Jin, Thermodynamic assessment of B–Zr and Si–Zr binary systems, Journal of Alloys and Compounds 468, 209-216 (2009). doi:10.1016/j.jallcom.2008.01.061
C. Gueneau, C. Servant, I. Ansara, N. Dupin, Thermodynamic assessment of the SiZr system, Calphad 18, 319-327 (1994). doi:10.1016/0364-5916(94)90036-1

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}
}