High Purity Hafnium Metal (Hf)
Material Type | Hafnium |
---|---|
Symbol | Hf |
Atomic Weight | 178.49 |
Atomic Number | 72 |
Color/Appearance | Gray Steel, Metallic |
Thermal Conductivity | 23 W/m.K |
Melting Point (°C) | 2227 |
Coefficient of Thermal Expansion | 5.9 x 10-6/K |
Theoretical Density (g/cc) | 13.31 |
Overview
1. Appearance and description:
High-purity hafnium, also known as crystalline hafnium, is a silver-gray metal crystal with a metallic luster;Chemical formula: Hf; Molecular weight: 178.49 Density: 13.31 g/cm3; Melting point: about 2227℃Boiling point: about 4602℃.
2. Properties:
It has good corrosion resistance, is not easily corroded by general acid and alkali aqueous solutions, and is easily soluble in hydrofluoric acid to form fluorine complexes. At high temperatures, hafnium can also be directly combined with oxygen, nitrogen and other gases to form oxides and nitrides; hafnium is relatively stable in the air, and powdered hafnium is very easy to burn; hafnium has a large thermal neutron capture cross-section, and hafnium has a prominent Nuclear energy is a rare material indispensable for the development of the atomic energy industry.
3. Purpose:
Mainly used in the production of hafnium-based alloy materials, jewelry alloy addition, alloy smelting addition, CVD evaporation coating and other industries. It is also used in the atomic energy field or in the military field.
Item | Purity | Main Impurities | Total Impurities | Test Method |
---|---|---|---|---|
High Purity Hafnium | 99.9% | Mg 、Al 、Si 、P 、S 、V 、Cr 、Mn 、Fe 、Co Ni 、Zn 、Ag | <50ppm | ICP-MS |
Ultra Pure Hafnium | 99.95% | <10ppm | GDMS | |
Utra High Purity Hafnium | 99.99% | <1ppm | GDMS |