Vacuum coating technology is an important branch of vacuum application technology. It has been widely used in optics, electronics, energy development, physical and chemical instruments, construction machinery, packaging, civil products, surface science and scientific research and other fields. Vacuum coating mainly includes evaporation plating, sputtering plating, ion plating, beam deposition and molecular beam epitaxy. Chemical vapor deposition is also available. If the purpose of vacuum coating is to change the physical and chemical properties of the material surface, this technology is an important part of the vacuum surface treatment technology, and its classification is shown in table 6. This paper gives a brief introduction to its main applications. First in optics, an optical glass or quartz surface coated with a layer or several layers of different substances of the film, can become a high reflection or no reflection (that is, anti-reflection film) or any expected proportion of reflection or transmission materials, can also be made to one wavelength of absorption, but another wavelength of transmission of the color filter. High reflection film from large aperture telescopes and a variety of lasers, all the way to the new building's large window coating jasmine, are in great demand. Anti-reflection film is a large number of cameras and a variety of lasers began, all the way to the new building's large window coating glass, are very needed. Antireflection film is widely used in the lens of cameras and television cameras. Vacuum coating plays an important role in electronics. Inheritance circuits of all sizes. Include memory, arithmetic implement, tell logic element to want to use conductive film, dielectric film and protective film. Chromium film is used as a mask for preparing circuits. Magnetic tape, disk, semiconductor lasers, Josephson devices, charge-coupled devices (CCD) are also channels of various films. In terms of display devices, video head, high-density video tape, transparent conductive film of plane display device, optical conductive film of camera tube and aluminum lining of display tube fluorescent screen are also prepared by vacuum coating method. In terms of components, evaporation of ni-cr in vacuum, chromium or cermet can make resistance, evaporation of aluminum, silicon monoxide and titanium dioxide on plastic can make capacitors, evaporation of selenium can get toner for electrostatic copier, evaporation of barium titanate can make magnetostrictive sound components, etc. Vacuum evaporation can also be used to fabricate superconducting films and microbead coatings for inertial confinement reactions. In addition, it can also be used to steam decorative film such as jewelry, watch shell surface, textile metal pattern, gold and silver wire wire, and use sputtering or ion plating on knives, molds and other manufacturing superhard film. In the past two years the rise of multi-arc ion plating prepared titanium products, such as stainless steel sheet, mirror plate, column, handrail, high-grade bed bracket, stair railing, etc. Is currently prevalent.
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