O8 Si2 Hf2 — Properties & Data | MatWorld

O8 Si2 Hf2

ceramic

· O8 Si2 Hf2

O8Si2Hf2 is an experimental hafnium silicate ceramic compound combining hafnium, silicon, and oxygen in a complex oxide structure. This material belongs to the family of refractory ceramics and high-temperature oxides being researched for extreme environment applications where thermal stability and mechanical integrity are critical. Hafnium silicates are of particular interest in aerospace and nuclear industries due to their exceptional high-temperature performance and resistance to thermal cycling, positioning them as potential alternatives to conventional zirconia-based ceramics in demanding thermal barrier and structural applications.

thermal barrier coatingsrefractory applicationsaerospace enginesnuclear reactor componentshigh-temperature structural ceramicsresearch/development phase

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	232.4	GPa	DFT · OptB88vdW
Shear Modulus(G)	120.3	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	5.447	eV	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-3.399	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.

O8 Si2 Hf2

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental