Dy2Hf2O7
ceramic· JVASP-19060· Dy2Hf2O7
Dy2Hf2O7 is a rare-earth hafnium oxide ceramic belonging to the pyrochlore family, combining dysprosium and hafnium oxides in a complex crystalline structure. This material is primarily of research and development interest for extreme-temperature structural applications, particularly as a thermal barrier coating (TBC) candidate and in nuclear fuel applications, where its high melting point, low thermal conductivity, and radiation tolerance offer advantages over conventional stabilized zirconia systems. Its use remains largely experimental, with development focused on aerospace propulsion, advanced nuclear reactors, and other high-heat environments where corrosion and thermal cycling resistance are critical.
thermal barrier coatingsaerospace engine componentsnuclear fuel matriceshigh-temperature structural ceramicsradiation-resistant coatingsresearch-phase materials
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.3316 | lb/in³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 3.312 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -154.9 | 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) | -3.827 | 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.