CAS No 12055-23-1 99% hafnium oxide for optical coating

CAS NO.:12055-23-1

Chemical formula:HfO2

Molecular weight: 44.01

EINECS (EC NO.): 235-013-2

Appearance:Off-white powder

Synonyms:Hafnium oxide; Hafnium dioxide; Hafnia

Hafnium oxide Properties:

Hafnium dioxide is the inorganic compound with the formula HfO2. Also known as hafnium dioxide or hafnia. It is a non-toxic, odorless white solid which is quite inert. So it insoluble in water, hydrochloric acid and nitric acid, soluble in concentrated sulfuric acid and hydrofluoric acid.  It dissolves slowly in hydrofluoric acid to give fluorohafnate anions. At elevated temperatures, it reacts with chlorine in the presence of graphite or carbon tetrachloride to give hafnium tetrachloride.

Hafnium Dioxide, HfO2, is a high-index, low absorption material usable for coatings in the near-UV (~250 nm) to IR (~10 μm) regions. Dense layers with good hardness can be deposited by electron-beam evaporation or by sputtering. Typical applications include near-UV laser AR and dielectric mirror designs. Hafnia is the high-index component used in combination with Silicon Dioxide layers to produce coatings with high laser damage thresholds. Hard, scratch-free, dense and adherent coatings can be deposited on relatively low temperature substrates with IAD. Its abrasion resistance provides protection for metal mirror surfaces.

Hafnium oxide Specification:

Hafnium oxide Application:

1. The raw material of metal hafnium and its compounds, used in the nuclear industry;

2. Refractory materials, anti-radioactive coatings and special catalysts;

3. Infrared optical coating materials;

4. High temperature structural materials

Hafnium oxide Packing:

Aluminum foil bag for within 10kg, 25kgs/fiber drum, 50kg/iron drum, or according to customers' requests.

Hafnium oxide Storage:

This product should be stored in a cool, dry room to avoid heavy pressure. It should not be exposed to the air during use, so as to avoid moisture absorption and agglomeration, which will affect the dispersion performance and use effect. Unused products should be sealed or stored in a vacuum after unpacking.