Titanium hydride

Titanium ( II) hydride

Cubic crystals having a metallic appearance

Fixed

3.76 g · cm -3

600 ° C ( decomposition)

Decomposition in water

Risk

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Titandihydrid is a chemical compound of titanium and hydrogen.

Production and representation

Titandihydrid can be obtained by the hydrogenation of titanium, with hydrogen, wherein the reaction starts at 300 ° C and above 400 ° C proceeds rapidly. Partially hydrogenated titanium reacts with carefully purified hydrogen even at 20 ° C. Depending Umsetzunsgrad the compound has a stoichiometric ratio up to TIH1, 998 By heating to temperatures above 400 ° C in a high vacuum, hydrogen is released again with highly hydrogenated products. At 1000 ° C a complete discharge of the hydrogen.

Properties

Titandihydrid in its pure form is a shiny metallic powder. Otherwise, it is light gray and may have an oxygen or nitrogen traces of blue or yellow tinted surface. The crystal structure differs depending on the degree of conversion. Up to TiH0, 5 the hydrogen dissolves easily in the metal lattice. TiH2 has a crystal structure of defect - type calcium fluoride.

Use

Titandihydrid is used as blowing agents for the production of metal foams. It is mixed with metal powder and the mixture then heated almost to the melting point of the metal Titandihydrid relies hydrogen bubbles free, thereby forming metal foam. The interesting thing is that Titandihydrid by its great density twice as much hydrogen in the same volume stores such as liquid hydrogen.