Color, golden ceramics

TiN-coated decorative ceramics are used on wrist watches, because they have lightness, scratch proof, corrosion resistance and golden color. They are held in esteem all over the world as high-class goods. Although the luxury goods depend on the times, one million pieces a year were produced at the height of its popularity. The cemented carbide and Ni-Al-Cr alloy were selected as their substrates in view of their scratch-proof properties. Chemical vapor... 

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