Lu2Si2O7 — Properties & Data | MatWorld

Lu2Si2O7

ceramic

· JVASP-89018· Lu2Si2O7

Lu2Si2O7 is a rare-earth silicate ceramic compound combining lutetium oxide with silicon dioxide in a pyrosilicate structure. This material is primarily investigated for high-temperature structural and thermal applications, particularly in aerospace and energy sectors where exceptional thermal stability and chemical inertness are required. Its notable advantage over conventional refractories lies in its resistance to degradation in extreme thermal environments, making it a candidate material for next-generation thermal barrier coatings, refractory linings, and high-temperature composite matrices in research and development contexts.

thermal barrier coatingshigh-temperature refractoriesaerospace engine componentsceramic matrix compositesextreme environment insulationresearch ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	159.0	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3100	-	DFT · OptB88vdW
Shear Modulus(G)	75.35	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	6.679	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	5.001	eV	DFT · OptB88vdW
↳	7.324	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	3.214	-	DFT · OptB88vdW
↳	2.616	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000792	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000762	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-122	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	400.6	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)	0.00120	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.470	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.

Lu2Si2O7

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental