Coating to metal by vacuum plating.
Vacuum coating (referred to as PVD, also known as vacuum plating) is a technique for vapor phase coating in a vacuum chamber filled with air or an inert gas. At present, the three main methods of vacuum coating have many characteristics such as no pollution, no hydrogen embrittlement, suitable for a variety of substrates, and relatively simple processes.
The vacuum plating has strong adhesion, the coating is not easy to fall off; the diffraction is good, the coating thickness is uniform; the coating is dense, the pinhole bubbles are less; the treatment is easy before plating, the process is simple; the materials are used and pollution-free.
It has been widely used in industrial sectors such as home appliancesm, jewelry, mechanical, aerospace, aerospace, electronics, light industry and optics to prepare wear-resistant, corrosion-resistant, heat-resistant, conductive and magnetic. Various coatings such as optics, decoration, lubrication, piezoelectric and superconducting.
The functions of vacuum coating are multifaceted, which also determines that its application is very rich. In general, the main functions of vacuum coating include giving a high metallic luster and mirror effect to the surface of the plated part, making the film layer with excellent barrier properties on the film material, providing excellent electromagnetic shielding and conductive effects.