Hafnium physical and mechanical properties. Application.
Are you interested in the properties and application of hafnium alloy? Supplier Avlob offers to buy hafnium at a bargain price. We guarantee timely delivery of products to any specified address. Regular customers can take advantage of discount discounts. The price is the best in this segment.
Technical specifications
Hafnium (Hf) is a heavy refractory metal with a specific gravity of 13.31 g / cm³. Valence +4, +3, +1, boiling point = 4603 ° C, melting point = 2233 ° C. The thermal neutron capture cross section is about 100 barns, which is 2000 times greater than that of zirconium-0.2 barn, and therefore zirconium is used in nuclear boilers.
| Description | Value |
|---|---|
| Chemical symbol | Hf |
| Atomic (molar) mass g / mol | 178.49 |
| Degrees of oxidation | 4, 3, 1 |
| Density [g / cm3] | 13.31 |
| Melting point t ° C | 2233 ° С |
| Heat of melting kJ / mol | 25.1 |
| Thermal conductivity K [W / (m · K)] | 23 |
| Heat of evaporation kJ / mol | 575 |
Application
The ability to capture neutrons causes the use of hafnium in the form of adjusting rods of nuclear reactors. The W-Hf-Ta alloy is optimal for fuel delivery in nuclear gas-phase engines. Due to their heat resistance and high refraction, HfF4 and HfO2 are used in the manufacture of multilayer and astronomical X-ray mirrors, fiber optics, night vision devices. The low work function of electrons makes it possible to produce cathodes of electron guns and thermoemission efficient power generators from hafnium. Manufacture of electrodes intended for welding low-carbon steel in argon, in an atmosphere of CO2, where electrodes of this type were almost four times more resistant than tungsten ones.
Delivery, price
Supplier Avlob offers to buy hafnium at an affordable price. The price is formed on the basis of European production standards. Supplier Avgloft offers to buy hafnium at the best price in bulk or at retail. We invite you to partner cooperation.