Hf4N3
ceramic· JVASP-8764· Hf4N3
Hf4N3 is a hafnium nitride ceramic compound belonging to the refractory ceramic family, characterized by extremely high hardness and thermal stability. This material is primarily explored in research and advanced aerospace contexts for ultra-high-temperature applications and wear-resistant coatings, where its exceptional hardness and chemical inertness offer advantages over conventional nitride ceramics in extreme environments. Engineers consider hafnium nitrides when conventional materials like titanium nitride or aluminum nitride reach their thermal or mechanical limits, particularly in hypersonic vehicle components and cutting tool applications.
refractory coatingsaerospace thermal protectioncutting tools and wear resistancehigh-temperature structural ceramicsresearch/advanced materials development
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 33,672 | ksi | — | ||
Poisson's Ratio(ν) | 0.3000 | - | — | ||
Shear Modulus(G) | 16,147.1 | ksi | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.4871 | lb/in³ | — |
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) | -0.7400 | µV/K | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.04880 | eV/atom | — | ||
Formation Energy(ΔHf) | -1.650 | 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.