Vacuum coating technology
is an important branch of vacuum pump
application technology, it has been widely used in optics, electronics, energy development, physical and chemical instruments, construction machinery, packaging, civil products, appearance science and scientific research and other fields. Vacuum coating methods mainly include evaporation plating, sputtering plating, ion plating, beam deposition plating and molecular beam epitaxy. There is also the chemical vapor deposition method. If the purpose of vacuum coating is to change the physical and chemical properties of material appearance, this technology is an important part of vacuum surface treatment technology. Now it makes a simple introduction on its several main application aspects. First of all, 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 desired proportion of reflection or transmission data, but also be able to make a certain wavelength of absorption and transmission of another wavelength of color filter. The high reflection film from the large aperture telescope and all kinds of lasers to the beginning of the new building window coating jasmine, are in great demand. Antireflection film is widely used in photography and a variety of laser beginning, constantly to the new building of large window coated glass, are in great demand. Antireflection film is widely used in cameras and television cameras lens. Vacuum coating plays an important role in electronics. Various range of inheritance circuits. Conductive film, insulating film and maintenance film shall be used in memory, arithmetic unit and notification logic element. Chromium film is used as a mask for circuit preparation. Magnetic tape, disk, semiconductor lasers, Josephson devices, charge-coupled devices (CCDS) are also channels for a variety of thin films. In the aspect of display devices, video head, high density video tape, transparent conductive film installed for plane display, optical conductive film for camera tube, aluminum lining for fluorescent screen of display tube, etc., are also prepared by vacuum coating method. In terms of components, evaporation of nickel and chromium in vacuum, chromium or ceramic metal resistance, evaporation of aluminum, silicon monoxide, titanium dioxide and other materials on plastic can make capacitors, evaporation of selenium can get the toner cartridge used in electrostatic copier, evaporation of barium titanate can make magnetostrictive sound elements and so on. Vacuum evaporation can also be used to fabricate superconducting films and microbead coatings for inertial confinement upheavals. In addition, it can also be used to steam decorative film such as jewelry, watch shell appearance, textile metal pattern, gold and silver wire, etc., and use sputtering plating or ion plating on tools, molds and other manufacturing super-hard film. The place that rises inside nearly two years is much arc ion plating prepares titanium gold product, if stainless steel sheet, lens face plate, baozhu, armrest, high-grade bed bracket, stair baluster is in at present prevailing.