HoHfRu2

ceramic

· JVASP-39367· HoHfRu2

HoHfRu2 is an intermetallic ceramic compound combining holmium, hafnium, and ruthenium in a 1:1:2 stoichiometric ratio. This is a research-phase material belonging to the family of refractory intermetallics, which are studied for extreme-temperature structural applications where conventional superalloys reach their thermal limits. The material combines the high melting point and oxidation resistance potential of hafnium-ruthenium systems with holmium addition, making it a candidate for next-generation hypersonic vehicles, space propulsion systems, and advanced reactor environments where materials must withstand temperatures and thermal cycling beyond current commercial alloy capabilities.

hypersonic vehicle structuresadvanced space propulsionultra-high-temperature researchrefractory intermetallic developmentthermal protection systems

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.4558	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	0.000547	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000535	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	8.700	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	8.580	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.6167	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.

HoHfRu2 — Properties & Data | MatWorld

HoHfRu2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental