Application Of Vacuum In The Coating Industry
Vacuum coating technology is an important branch of applied vacuum technology, vacuum insulation panel which has been widely used in optics, electronics, energy development, physical and chemical equipment, construction machinery, packaging, consumer products, surface science and scientific research and other fields.
Vacuum coating methods used are evaporation, sputtering, ion plating, beam deposition and molecular beam epitaxy and so on. In addition there are chemical vapor deposition. 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, its classification is shown in Table 6. Now a few of its major applications to do a brief introduction.
First Optically, after a layer of an optical coating on a glass or quartzose surface or the thin film layers of different materials can be highly reflective or non-reflective (i.e., AR coating) or any anticipated material reflection or transmission ratio, and A color filter that absorbs a certain wavelength and transmits it for another wavelength can be made. Highly reflective films are needed from large-aperture telescopes and lasers to large window-coated jasmine in new buildings. AR coatings are used extensively for photography and various lasers, all the way up to the large window glass in new buildings. AR coatings are heavily used in cameras and TV cameras.
Vacuum coating in electronics occupy a very important position. Successive circuits of all sizes. Including memory, computing devices, to tell the logic components and so must use conductive film, insulating film and protective film. Chromium film is used as a mask to fabricate the circuit. Tapes, disks, semiconductor lasers, Josephson devices, charge-coupled devices (CCDs), also have various films. In the display device, video heads, high-density video tape and flat display devices, transparent conductive film, photographic film light guide tube, display tube fluorescent aluminum foil, etc. are also prepared by vacuum coating. In the element aspect evaporated nickel-chromium in vacuo, chromium or cermet may be manufactured resistors, evaporated plastic aluminum, a silicon oxide, titanium dioxide, etc. may be manufactured capacitor was evaporated selenium to give the drum an electrostatic copying machine and evaporated barium titanate can Manufacture of magnetostrictive sound components and so on.
Vacuum evaporation can also be used to fabricate superconducting films and microbead coatings for inertial confinement reactions. In addition, jewelry, watches and clocks, shell surface, textile metal patterns, gold silver wire and other decorative film deposition, and the use of sputtering or ion plating on the tools, molds and other superhard film. Vacuum insulation panels in the past two years the rise of the multi-arc ion plating titanium products, such as stainless steel sheet, mirror panels, including columns, handrails, luxury bed trays, balustrades are currently in vogue.