Y2Si2O7 — Properties & Data | MatWorld

Y2Si2O7

ceramic

· Y2Si2O7

Y2Si2O7 is an yttrium silicate ceramic compound belonging to the rare-earth silicate family, valued for its high-temperature stability and thermal properties. This material is primarily investigated for aerospace and power generation applications where thermal barrier coatings (TBCs) and high-temperature structural components are needed, offering potential advantages over conventional oxide ceramics in oxidation resistance and thermal cycling durability. It represents an emerging alternative to widely-used thermal protection systems, with particular interest in next-generation gas turbines and hypersonic vehicle applications where superior temperature capability and environmental resistance are critical.

thermal barrier coatingsgas turbine componentshigh-temperature aerospace structureshypersonic vehicle protectionadvanced refractory applicationsoxidation-resistant coatings

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	145.2	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3200	-	DFT · OptB88vdW
Shear Modulus(G)	66.64	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	3.986	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	4.984	eV	DFT · OptB88vdW
↳	6.495	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	6.192 range 3.261–9.123median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	3.260	-	DFT · OptB88vdW
↳	2.722	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000809	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000717	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-135.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	390.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	DFT · TBmBJ

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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.00360	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.431	eV/atom	DFT · OptB88vdW

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.

Y2Si2O7

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental