Yb2SiO5 — Properties & Data | MatWorld

Yb2SiO5

ceramic

· JVASP-22959· Yb2SiO5

Yb2SiO5 is a rare-earth silicate ceramic compound combining ytterbium oxide with silicon oxide, belonging to the family of rare-earth silicates studied for high-temperature structural and functional applications. This material is primarily investigated for thermal barrier coatings and refractory applications where exceptional thermal stability and resistance to sintering at elevated temperatures are required, particularly in aerospace and power generation sectors where conventional zirconia-based systems may degrade. Ytterbium silicates are noted for their crystalline stability above 1200°C and lower thermal conductivity compared to some alternatives, making them candidates for next-generation thermal management in extreme environments.

thermal barrier coatingsaerospace engine componentshigh-temperature refractoriespower generation systemsextreme environment insulationresearch/development materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	7.029	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.05200	eV	DFT · OptB88vdW
↳	0.1380	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	19.51	-	DFT · OptB88vdW
↳	19.61	-	DFT · TBmBJ
Thermoelectric Power Factor(PF)2 entries	0.000133	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000139	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	26.76	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	30.87	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	5.840	%	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)	0.02860	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.926	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.

Yb2SiO5

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental