Hf4AlSi
metal· JVASP-100560· Hf4AlSi
Hf4AlSi is a hafnium-aluminum-silicon intermetallic compound belonging to the class of refractory metal alloys. This material is primarily of research and developmental interest, explored for extreme high-temperature applications where conventional superalloys reach their limits. The hafnium-based intermetallic system combines the high-temperature stability of refractory metals with intermetallic strengthening mechanisms, making it a candidate material for next-generation aerospace propulsion systems, hypersonic vehicle structures, and advanced thermal protection systems where oxidation resistance and structural integrity at elevated temperatures are critical.
high-temperature aerospace applicationsrefractory intermetallics researchhypersonic vehicle structuresturbine engine hot-section componentsthermal protection systemsoxidation-resistant coatings
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | — | Pa | — | — | |
Poisson's Ratio(ν) | — | - | — | — | |
Shear Modulus(G) | — | Pa | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | — | kg/m³ | — | — |
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.