Advantages of Tungsten Carbide Cutting Tools With PVD Coatings

It is known that since the using hard coating on tungsten carbide cutting tools, some huge improvements in productivity of machining operations have been achieved. The physical vapour deposition (PVD) method, which has several advantages over the chemical vapour deposition, has been employed for coatings like TiN, TiCN on tungsten carbide cutting tools.

The inherent advantages of PVD coatings over CVD ones have been revealed as the improvement of wear resistance of tungsten carbide cutting tools and the better performance in machining operations. In addition, since the coatings deposited by the PVD process, its film growth occurs at the atomic level, single or multiple thin layers of single or multicomponent structures could be employed on the tungsten carbide cutting tools, by using different reactive atmospheres and cathode materials.


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