The Properties And Application of Titanium nitride

Titanium Nitride (TiN), a non-stoichiometric compound, has a structure similar to NaCl. It is a facecentered cubic lattice, with lattice constants a=0.4241nm. In this structure, titanium atoms can be found at the cornertops of a facecentered cubic. TiN has a nonstoichiometric composition, which is TiN0.37 – TiN1.16. Changes in nitrogen content are possible within a specified range without altering the structure of TiN. TiN powders are usually yellowish-brown, ultrafine powders are black and TiN Crystals are golden-yellow. TiN has an excellent thermal shock resistance, a melting temp of 2950degC and a density of 5-4.44g/cm3. TiN is more heat resistant than other transition metal nitrides because of its higher melting point. The TiN crystal is very similar to TiC. However, the C atoms are replaced with N atoms.

Nature introduction

TiN is an extremely stable compound. It will not reacted with metals, such as iron and chromium at high temperature. Also, TiN crucibles won’t react with acidic Slag in CO or N2 atmospheres. TiN is used in conjunction with alkaline-slag. This makes it an ideal container to study the interactions between molten iron and certain elements. TiN, when heated under vacuum, loses nitrogen and becomes titanium nitride with low nitrogen content.

TiN is attractively golden in color. It also has a very high melting temperature, a good chemical stability, and a low wetting ability to metals. It has a superconductivity, high electrical conductivity, and can be used to make structural materials for high temperatures. It is also superconducting material.

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