Ca6HfO8

ceramic
· JVASP-50145· Ca6HfO8

Ca₆HfO₈ is a mixed-metal oxide ceramic compound containing calcium and hafnium, belonging to the family of refractory oxides and high-temperature ceramic materials. This material is primarily of research and development interest for thermal barrier coatings and high-temperature structural applications, where hafnium's exceptional refractory properties and chemical stability combine with calcium oxide's role in stabilizing crystal structures at extreme temperatures. Ca₆HfO₈ and related hafnium-calcium systems are investigated as alternatives or supplements to yttria-stabilized zirconia in demanding thermal environments, offering potential advantages in oxidation resistance and mechanical stability at ultra-high temperatures.

thermal barrier coatingsaerospace engine componentshigh-temperature refractory applicationsresearch and developmentextreme environment materials

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Density(ρ)
4.161
kg/m³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
4.165
eV—
Magnetic Moment(μB)
0.000
µB—
Seebeck Coefficient(S)
-274.5
µV/K—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
0.02050
eV/atom—
Formation Energy(ΔHf)
-3.388
eV/atom—
Verified Unverified Low confidence (<80%) Link to source

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.