Ca6HfO8 — Properties & Data | MatWorld

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:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1503	lb/in³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	4.165	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	3.741	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00258	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00102	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-274.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	434.7	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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)	0.02050	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.388	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.

Ca6HfO8

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental