HfOs3

ceramic

· JVASP-36132· HfOs3

HfOs₃ is a ternary ceramic compound combining hafnium and osmium oxides, belonging to the refractory oxide ceramic family. This material is primarily of research interest rather than established commercial production, studied for its potential as an ultra-high-temperature ceramic and in advanced oxidation-resistant coating applications. Its notable density and refractory character make it a candidate for extreme thermal environments, though hafnium-osmium systems remain limited in industrial deployment compared to more conventional refractory oxides.

high-temperature aerospace applicationsrefractory coatingsoxidation barriersmaterials researchextreme environment testing

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.7109	lb/in³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	8.300e-7	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00000135	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	0.2700	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.3400	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)	0.2371	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.1484	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.

HfOs3 — Properties & Data | MatWorld

HfOs3

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental