Nitrides and carbides Titanium nitride (TiN) is a refractory solid exhibiting extreme hardness, thermal/electrical conductivity, and a high melting point. TiN has a hardness equivalent to sapphire and carborundum (9.0 on the Mohs scale), and is often used to coat cutting tools, such as drill bits. It is also used as a gold-colored decorative finish and as a barrier layer in semiconductor fabrication. Titanium carbide (TiC), which is also very hard, is found in cutting tools and coatings.
nitrides and carbides titanium nitride (tin) is a refractory solid exhibiting extreme hardness thermal/electrical conductivity and a high melting point tin has a hardness equivalent to sapphire and carborundum (90 on the mohs scale) and is often used to coat cutting tools such as drill bits it is also used as a gold-colored decorative finish and as a barrier layer in semiconductor fabrication titanium carbide (tic) which is also very hard is found in cutting tools and coatings