The Properties And Application of Titanium nitride

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The titanium nitride structure (TiN), which is similar to that of NaCl, has a lattice constant, a = 0.4241 nm. Titanium-atoms are found at the corners tops of this face-centered cubic. TiN has a nonstoichiometric composition, which is TiN0.37 – TiN1.16. Changes in nitrogen content are possible within a specified range, without affecting the structure of TiN. The TiN powder has a yellowish-brown color, while ultrafine powders are black and the TiN crystals have a golden yellow colour. TiN has an excellent thermal shock resistance, a melting temp of 2950degC and a density of 5-4.44g/cm3. TiN has a much higher melting temperature than most of the transition metals, but it also has a lower density. This makes TiN a heat-resistant metal. 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 and N2 atmospheres. It can be used with alkaline or acidic slag. TiN, when heated under vacuum, loses nitrogen and becomes titanium nitride that has a lower 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 is a superconductor with high electrical conductivity. It is also superconducting material.

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