HfNbB2
metal· JVASP-99659· HfNbB2
HfNbB2 is a refractory metal boride compound combining hafnium, niobium, and boron, belonging to the family of ultra-high-temperature ceramics and intermetallic materials. This material is primarily investigated in research and advanced development contexts for extreme-environment applications where conventional superalloys reach their thermal limits. It is notable for its potential in aerospace propulsion systems, hypersonic vehicles, and thermal protection applications where exceptional high-temperature strength and oxidation resistance are critical, though industrial deployment remains limited compared to established alternatives like tungsten-based alloys or yttria-stabilized zirconia.
hypersonic vehicle structuresrocket nozzle componentsrefractory coatingshigh-temperature propulsion systemsthermal protection systemsultra-high-temperature research applications
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | — | lb/in³ | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | — | eV | — | — | |
Magnetic Moment(μB) | — | µB | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | — | eV/atom | — | — | |
Formation Energy(ΔHf) | — | eV/atom | — | — |
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Export Control
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.