HfSnPd
ceramicHfSnPd is an intermetallic ceramic compound combining hafnium, tin, and palladium—a high-density material belonging to the family of refractory intermetallics being explored for extreme-environment applications. While primarily a research material rather than an established commercial compound, this composition targets aerospace and high-temperature structural applications where conventional ceramics and superalloys reach performance limits. The material's appeal lies in combining the thermal stability of hafnium-based systems with potential improvements in damage tolerance and workability offered by palladium and tin additions, positioning it as a candidate for next-generation propulsion systems and thermal protection where weight, strength, and oxidation resistance must coexist.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 17,757.5 | ksi | — | ||
| ↳ | 17,757.5 | ksi | — | ||
| ↳ | 18,492.3 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.1799 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Poisson's Ratio(ν)2 entries | 0.2965 | - | — | ||
| ↳ | 0.3100 | - | — | ||
Shear Modulus(G)3 entries | 8,362.1 | ksi | — | ||
| ↳ | 8,362.1 | ksi | — | ||
| ↳ | 8,302 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.3789 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.4090 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 23.92 | - | — | ||
| ↳ | 24.09 | - | — | ||
| ↳ | 21.31 range 19.29–23.33median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.03896 | C/m² | — | ||
| ↳ | 0.01371 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -245 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.7089 | eV/atom | — | ||
| ↳ | -0.7008 | eV/atom | — |