The possibility and challenge of obtaining a new color system by ion plating

The possibility and challenge of obtaining a new color system by ion plating

After years of development, ion plating decorative film has been able to produce a variety of color series, but the market demand for new colors is still increasing. However, there are some limitations in obtaining more stable color coatings from a limited number of elements. At present, although there are attempts to use niobium, hafnium, and other elements, no breakthroughs have been made. The color of a substance depends on the selective absorption of visible light, and selective absorption and material related to the electronic structure and electron energy level transition. Because the electronic structure of complex compounds is too complex and many influencing factors, it is not possible to accurately calculate or design a substance with a specific color, and it is difficult to find the corresponding target and reaction gas. In addition, the lack of understanding of the physical and chemical behavior of plasma in the ion plating process also increases the difficulty of color difference control. To solve this problem, some people try to use the optical interference membrane method, through the design of a multilayer film system to obtain the required interference color. This method is expected to solve the traditional ion plating difficult to obtain red, green, and other color problems.

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