Abstract
Reactively deposited films of TiN and ZrN are of great interest as decorative coatings and in architectural glass applications. Traditional methods of film deposition have posed problems related to available deposition rates, film quality and color control. The cathodic arc plasma deposition process offers an alternative to deposit such films with good uniformity, film quality and color control. This paper deals with hard coatings for decorative applications deposited using the cathodic arc process. The films of TiN, ZrN, HfN, TiAlN and TiZrN are characterized in terms of structure and morphology, colorimetric and optical reflectance, hardness, wear resistance and corrosion resistance. It is demonstrated that by adjusting process conditions, doping with carbon and/or alloying with other elements it is possible to adjust coating colors over a wide range and to simulate closely a range of gold colors. The cathodic arc therefore provides a significant alternative to existing techniques for a wide range of decorative applications.
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