What is a vacuum coating machine
What is a vacuum coating machine? Vacuum coating machine mainly refers to a type of coating that needs to be carried out under a higher vacuum, including many types, including vacuum resistance heating evaporation, electron gun heating evaporation, magnetron sputtering, MBE molecular beam epitaxy, PLD laser sputtering deposition, ion There are many kinds of beam sputtering. The main idea is divided into evaporation and sputtering.
The material that needs to be coated is called the substrate, and the material to be coated is called the target. The substrate and the target are in the same vacuum chamber.
Evaporation coating generally heats the target material to evaporate the surface components in the form of radicals or ions. And it settles on the surface of the substrate and forms a thin film through a film-forming process (scattered dots-island structure-vagus structure-layered growth). For sputtering coatings, it can be simply understood as bombarding the target with electrons or high-energy lasers, and the surface components are sputtered out in the form of radicals or ions, and finally deposited on the surface of the substrate, undergoing the film forming process, and finally forming a thin film .