Production of hafnium

Are you interested in the production of hafnium? Supplier KMZ offers to buy hafnium and its alloys at economical price. Supplier guaranteed timely delivery at any address specified by the consumer.

Geology

The difficulty of obtaining this metal is that it does not form its own minerals; it is usually accompanied by zirconium in nature. The earth’s crust contains 3.2 x 10-4%Hf. In most zirconium minerals its content varies from 2 to 1…6…7 percent, but sometimes up to 35 per cent in the secondary minerals. The most valuable commercial sources of hafnium are marine and alluvial deposits of the mineral zircon.

Division

Compounds of hafnium in the ore raw materials are usually separated from the compounds zirconias at the end of the production cycle. Metal hafnium receive current through the rehabilitation of HfCl4 with magnesium or sodium.

General information

Pure hafnium is a ductile and easy to cold and hot working (rolling, forging, and stamping). At room temperature it has a hexagonal lattice. It has high resistance to high temperatures and this indicator may be related to refractory metals. It is a high emissivity that is used in laser, x-ray and nuclear engineering

Chemical properties

Its chemical properties hafnium is very similar to zirconium, because of the almost equal dimensions of their ions, and the close resemblance of the electronic structure. However, the chemical activity of hafnium is slightly lower than that of zirconium. Solid hafnium is completely resistant to atmospheric gases at room temperature. However, when heated to temperatures above 600 °C it oxidizes rapidly and, like zirconium reacts with nitrogen and hydrogen. Hafnium is different corrosion resistance in water and steam up to 400 °C. Hafnium powder is pyrophoric. Dioxide, HfO2, is a refractory substance of white color, with high chemical resistance. At high temperatures hafnium reacts with carbon, boron, nitrogen and silicon with the formation of metallic refractory compounds that are very resistant to chemical reagents, for example, for HfB and HfB2 melting point is 3250 °C), and for HfC — 3887 °C.

Use

Nuclear energy is the production of control rods reactors and shielding against neutron radiation in electronics is the fabrication of the cathode and electrical contacts. A promising application is the production of heat-resistant alloys for aviation and rocket technology. Solid solution of carbides of hafnium and tantalum, which melt at a temperature more than 4000 °C, is the most refractory ceramic material; it is used in manufacturing parts of rocket engines, as well as crucibles for melting refractory metals.

Buy

Are you interested in the production of hafnium? Supplier KMZ offers to buy hafnium and its alloys at economical price. Supplier guaranteed timely delivery at any address specified by the consumer.

Supplier, price

Buy rare and refractory metals from a vendor KMZ can at an affordable price. The price is formed based on the European standards of production. Buy hafnium rental at a reasonable price, you can wholesale or retail. Regular customers can take advantage of the discount system of discounts from the company KMZ

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Igor

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