Hafnium 1.5*4.2 Evaporation Pellets Packaging Vacuum Packaging

Hafnium a silver-gray metal having a metallic luster; There are two variants of the metal hafnium: α hafnium is a hexagonal variant (1750℃) with a higher transition temperature than zirconium. The metal hafnium has allotropic variants at high temperatures. The metal hafnium has a high neutron absorption cross-section and can be used as a reactor control material. Hafnium chemical properties and zirconium is very similar, has good corrosion resistance, not easy to be eroded by general acid and alkali aqueous solution; It is easily soluble in hydrofluoric acid and forms fluorine complex. At high temperatures, hafnium can also combine directly with gases such as oxygen and nitrogen to form oxides and nitrous compounds. Hafnium is useful because it readily emits electrons (as in the filaments of incandescent lamps). Used as cathode in X-ray tubes, alloys of hafnium and tungsten or molybdenum are used as electrodes in high voltage discharge tubes. Cathode used for X-ray and tungsten wire manufacturing industry. Pure hafnium has plasticity, easy processing, high temperature corrosion resistance, is an important material in the atomic energy industry. Hafnium thermal neutron capture cross-section is large, is an ideal neutron absorber, can be used as atomic reactor control rod and protection device. Hafnium powder can be used as a booster for rockets. Cathodes for X-ray tubes can be manufactured in the electrical industry. The hafnium alloy is used for rocket nozzles and frontal protection for gliding re-entry vehicles, and the hF-TA alloy is used for tool steel and resistance materials. Hafnium is used as an additive in heat-resistant alloys, such as those of tungsten, molybdenum, and tantalum. HfC can be used as carbide additive because of its high hardness and melting point. The melting point of 4TaCHfC is about 4215℃, which is the compound with the highest melting point known. Hafnium can be used as a getter in many charging systems. Hafnium getter can remove oxygen, nitrogen and other gases in the system. Hafnium is often used as an additive in hydraulic oil to prevent volatile hydraulic oil in high-risk operations, with strong resistance to volatility, this characteristic, so generally used in industrial hydraulic oil. Medical hydraulic fluid.

Advantage:

1, strong corrosion resistance;
2, very high melting point;
3, super high hardness;
4, good strength;
5, strong corrosion resistance;