A common configuration of PVD coating:
The biggest difference between the color film layer and the conventional color film layer is the C value and H value, so it can be said that black is also a color film layer.
Zirconium + nitrogen: yellow-green to golden yellow
Zirconium + methane: dark and light black
Zirconium + oxygen: white, transparent film
Zirconium + nitrogen + methane: gold, imitation rose gold
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