The titanium nitride structure (TiN), which is similar to that of NaCl, has a cubic lattice face-centered with a constant lattice a=0.4241nm. Titanium-atoms can be found on the corner tops. TiN has a stable range of composition between TiN0.37 and TiN1.16. It is a nonstoichiometric material. Changes in nitrogen content are possible within a specified range without altering the structure of TiN. TiN powders are usually a yellowish-brown color, while ultrafine powders and crystals of TiN are golden yellow. 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 metal nitrides. However, 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 or N2 atmospheres. TiN is 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 has a beautiful golden color. It also has a very high melting temperature, possesses exemplary chemical stability, and is not wettable 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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