Titanium Nitride (TiN), a non-stoichiometric compound, has a structure similar to NaCl. It is a face-centered cube with a lattice of constant a=0.4241nm. In this structure, titanium atoms can be found at the corners tops. TiN has a stable composition range between TiN0.37 and TiN1.16. It is a nonstoichiometric substance. 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 point at 2950degC and a density range of 5.43-5.44g/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 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. 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 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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