The difference between PVD and ordinary electroplating
What are the difference between PVD and ordinary electroplating?
PVD basic methods: vacuum evaporation, sputtering, ion plating (hollow cathode ion plating, hot cathode ion plating, arc ion plating, reactive reactive ion plating, radio frequency ion plating, DC discharge ion plating).
PVD technology emerged, and the prepared films have the advantages of high hardness, low friction coefficient, good wear resistance and chemical stability. The initial successful application in the field of high-speed steel cutting tools has attracted great attention from the manufacturing industry all over the world. While developing high-performance and high-reliability coating equipment, people have also carried out more in-depth coating on cemented carbide and ceramic cutting tools. Layer application research. Compared with the CVD process, the PVD process has a lower processing temperature and has no effect on the flexural strength of the tool material below 600 °C; the internal stress state of the film is compressive stress, which is more suitable for the coating of carbide precision and complex tools; PVD The process has no adverse impact on the environment, which is in line with the development direction of modern green manufacturing. At present, PVD coating technology has been widely used in the coating treatment of carbide end mills, drills, step drills, oil hole drills, reamers, taps, indexable milling inserts, turning inserts, special-shaped tools, welding tools, etc. .
Electroplating is the process of plating a thin layer of other metals or alloys on the surface of certain metals using the principle of electrolysis. Metal oxidation (such as rust), improve wear resistance, electrical conductivity, reflectivity, corrosion resistance (copper sulfate, etc.) and enhance aesthetics.
The purpose of electroplating is to coat a metal coating on the substrate and change the surface properties or dimensions of the substrate. Electroplating can enhance the corrosion resistance of metals (the plated metals are mostly corrosion-resistant metals), increase hardness, prevent wear, improve electrical conductivity, smoothness, heat resistance and surface beauty.
