The Properties And Application of Titanium nitride

Titanium Nitride (TiN), a non-stoichiometric compound, has a structure similar to NaCl. It is a face-centered cube with a lattice of a=0.4241nm. The titanium atoms can be found on the corner tops. 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 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 it has higher melting points but lower densities. The TiN crystal is very similar to TiC. However, the C atoms are replaced with N atoms.

Nature Introduction

It is very stable and will not react when exposed to CO or N2 at high temperature. Similarly, TiN crucibles won’t react with acidic Slag. It can be used with alkaline or acidic slag. TiN, when heated under vacuum, loses nitrogen and becomes titanium nitride with low nitrogen content.

TiN has a beautiful golden color. It also has a very high melting temperature, possesses exemplary chemical stability, and is not wettable to metals. It is a superconductor with high electrical conductivity. It is also superconducting material.

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