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Titanium nitride coating is a popular and cost-effective way to improve the performance of metal components in a variety of industrial applications. Its combination of hardness, wear resistance and inertness reduces friction, extends the service life of tools, and protects surfaces from corrosion. It’s also an excellent choice for medical devices including implants and surgical instruments.

When applied to cutting tools, titanium nitride (TiN) can increase tool life by two to ten times or more over uncoated metals. The coating helps retain sharp edges on razor blades and metal cutters, reduces galling between sliding components in injection molding and forming machines, and helps keep surgical instruments sharp for longer use.

However, TiN is a reactive coating and needs proper care to maintain its hardness, inertness and corrosion resistance properties. In addition, it’s important to understand how it is applied to the substrate before determining the best application method.

In most cases, TiN is applied to metals by physical vapor deposition (PVD) processes. This process deposits a fully dense and void-free coating consisting of equiaxed grains, allowing for superior hardness, abrasion resistance and lubricity.

While it’s possible to apply titanium nitride coating using other methods, the PVD method has been proven to be both economical and effective. This method uses titanium powder metallurgy technologies to fabricate precursor products, compress them to the right density, and then apply them using a high-pressure plasma. This process also makes it easier to achieve the desired surface finish than other methods.