HfGeO4
ceramic· HfGeO4
HfGeO4 is a hafnium germanate ceramic compound that combines the refractory properties of hafnium oxides with germanate chemistry. This material is primarily of research and advanced materials interest, developed for high-temperature structural applications and as a potential thermal barrier coating system component where extreme thermal stability and chemical inertness are required. It represents an experimental alternative in the hafnium-based ceramic family, offering potential advantages in aerospace, nuclear, and ultra-high-temperature environments where conventional oxide ceramics may degrade.
thermal barrier coatingshigh-temperature ceramicsrefractory applicationsaerospace propulsionnuclear reactor materialsresearch and development
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 32,971.4 | ksi | — | ||
Poisson's Ratio(ν) | 0.3100 | - | — | ||
Shear Modulus(G) | 14,654.6 | ksi | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.3000 | lb/in³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 4.171 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 11.36 range 4.691–18.03median of 2 measurements | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -287.9 | 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) | -2.802 | 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.