YSi2 — Properties & Data | MatWorld

YSi2

Name: YSi2
Brand: MatWorld

ceramic

· YSi2

YSi₂ is an intermetallic ceramic compound belonging to the rare-earth silicide family, combining yttrium with silicon in a defined stoichiometric ratio. It is primarily investigated as a high-temperature structural material and coating constituent for extreme-temperature applications where conventional ceramics or metals reach their limits. The material is notable for its potential use in aerospace propulsion systems, thermal barrier coatings, and nuclear applications, though it remains largely in research and development rather than high-volume production.

high-temperature structural applicationsthermal barrier coatingsaerospace propulsionnuclear reactor componentsrefractory composite reinforcementresearch materials

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)3 entries	84.84	GPa	DFT
↳	82.22	GPa	DFT · OptB88vdW
↳	84.84	GPa	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	1.399	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	Pa	DFT · PBE
Poisson's Ratio(ν)2 entries	0.3500	-	DFT · OptB88vdW
↳	0.3595	-	DFT · PBE
Shear Modulus(G)3 entries	26.30	GPa	DFT
↳	22.01	GPa	DFT · OptB88vdW
↳	26.30	GPa	DFT · PBE

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	4.122	kg/m³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	0.000	eV	Measured
↳	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00181	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00186	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-20.35	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-20.80	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.08130	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.4879	eV/atom	DFT · OptB88vdW
↳	-0.6405	eV/atom	Measured

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

YSi2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental