Colored articles with interference layers made of a composite of silicon dioxide and silicon carbide

摘要

A colored article comprises a workpiece having a surface producing a color by light interference. The surface is defined by forming a reflective surface and coating the reflective surface with a composite layer of SiC and SiO2 having an SiO2 ingredient ratio of 5 to 80% by weight and a thickness of 200 to 3000 ANGSTROM or with a composite layer of Si3N4 and SiO2 having an SiO2 ingredient ratio of 5 to 80% by weight and a thickness of 400 to 4000 ANGSTROM .