HfAs
ceramic· HfAs
HfAs is a intermetallic ceramic compound combining hafnium and arsenic, representing a refractory material system with potential for high-temperature structural applications. This material belongs to the family of transition-metal pnictide ceramics, which are primarily explored in research contexts for their hardness, thermal stability, and wear resistance. HfAs and related compounds are of particular interest in aerospace and extreme-environment applications where conventional ceramics may degrade, though industrial adoption remains limited compared to established refractory systems like hafnium carbide or hafnium nitride.
High-temperature structural ceramicsRefractory coatings and linersAerospace thermal managementWear-resistant applicationsResearch/advanced materials development
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 127.4 | GPa | — | ||
| ↳ | 129.9 | GPa | — | ||
Poisson's Ratio(ν) | 0.2800 | - | — | ||
Shear Modulus(G)2 entries | 66.15 | GPa | — | ||
| ↳ | 73.97 | GPa | — |
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.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 10.54 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -28.97 | 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) | -1.007 | 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.