HoB4Ru

ceramic

· JVASP-39462· HoB4Ru

HoB4Ru is an experimental intermetallic ceramic compound combining holmium, boron, and ruthenium—a rare-earth boride with metallic ruthenium incorporation. This material belongs to the hexaboride family, known for extreme hardness and high-temperature stability, and remains primarily in research and development rather than established industrial production. The ruthenium addition to holmium boride may enhance electrical conductivity and thermal properties compared to conventional rare-earth borides, making it of interest for high-temperature structural or functional applications, though its engineering viability and scalability have not been widely demonstrated.

high-temperature ceramics researchrefractory materials developmentrare-earth boride compoundsexperimental aerospace materialsthermoelectric applications (potential)ultra-hard coating precursors (potential)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	8.442	kg/m³	—

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

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	—
Magnetic Moment(μB)	0.000	µB	—
Seebeck Coefficient(S)	-11.46	µV/K	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	—
Formation Energy(ΔHf)	-0.6464	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.

HoB4Ru

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental