... decorative coatings,(not only plated titanium nitride and zirconium nitride,aluminum nitride titanium, chromium nitride ... of the film,titanium, zirconium,gold,silver,aluminium,copper,and so on the metal film, but also ... film connects well to the base and is featured by smooth surface and high micro-hardness etc.. ... of work pieces (tool and die, gauge and cutting tool, bearing and piston ring etc.).There ...