Hafnium Oxide

Hafnium oxide is white powder. It is stable at room temperature and room pressure. It is insoluble in water. The evaporation conditions of hafnium dioxide is using electronic gun with oxygen partial pressure 1~2*10-2Pa, evaporation temperature 2600~2800℃, substrate temperature 250℃ and evaporation rate 2nm/2.  Hafnium metal is the raw material.

Hafnium Oxide

CAS No.:12055-23-1 EINECS No.:235-013-2 Molecular Formula:HfO2 Molecular Weight:210.49
Melting Point:2181℃ Density:9.68 Molar Mass:210.49g/mol
Coefficient of Linear Expansion:5.6*10-6/K Evaporation Pressure: 1Pa at 2678℃, 10Pa at 2875℃
Thin Film Properties:220~12000nm Refractive Index:(250nm)~2.15 (500nm)~2


Hafnium(IV) oxide is a kind of evaporation coating material, which mainly apply to UV antireflection film and interference film.

Hafnium dioxide apply to spectral analysis, catalyst system and refractory materials.