Which industries require vacuum coating
1. Application of coating technology in decorations
With the development of the economy and the improvement of living standards, people like to watch the watch case, strap, clothing, lighting, glasses frames, indoor and outdoor decorative parts, hardware bags, mobile phone cases, mobile phone screens, sanitary ware, food packaging and other decorations. It is decorated in colorful colors.
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2. Application of coating technology in metal cutting tools such as tools and molds
In life, we will see gold, cobalt, copper, black and other bites, milling cutters, molds, etc. These are the coating tools processed by coating technology.
(1) Golden yellow is coated with TiN and ZrN coating on the tool. TiN is the first generation of hard layer materials that are widely used.
(2) Black is coated with TiC and CrN coatings on the cutting tool.
(3) Cobalt copper is coated with a TiALN coating on the tool.
3. Application of coating technology on architectural glass and automotive glass
Architectural glass has two basic functions: light transmission and heat insulation. Ordinary glass can radiate energy through most of the sun's rays, which is very beneficial for the energy of daylighting and absorbing sunlight. For space infrared radiation, ordinary glass can prevent indoor heat from directly passing through the outdoor, but the secondary heat dissipation after the heat is absorbed by the glass will also cause great loss. With the development of the economy, ordinary glass has become increasingly unable to meet people's requirements. The solar control film and the low-radiation film can make up for the shortcomings of ordinary glass in this respect. The solar control film can meet the requirements of lowering the indoor temperature in low latitude areas, while the low radiation film can meet the requirements of fully accepting solar radiation energy and maximizing indoor heat outflow at high latitudes.
On the glass, a layer of TiO2 is applied to make it anti-fog, anti-dew and self-cleaning glass. This process has a good application on automotive glass.
4, the application of coating technology in flat panel display
Various types of thin films are used in all types of flat panel displays, and ITO films are required for almost all types of flat panel display devices to meet the requirements of transparent appliances. It is no exaggeration to say that there is no flat panel display device without thin film technology.
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5. Application of coating technology in solar energy utilization
When it is necessary to effectively utilize solar thermal energy, it is necessary to consider an absorption surface that absorbs more sunlight light and has less loss due to heat radiation or the like. The peak of the solar spectrum is approximately in the infrared range between 2 and 20 μm. Since the solar radiation and the thermal radiation spectrum differ in the wavelength band, in order to effectively utilize the solar thermal energy, it is necessary to consider the absorption surface having the wavelength selective property. The ideal choice of absorption surface is that the absorption band (α) of the band (visible light band) of the solar radiation spectrum is 1, and the emissivity (ε) of the thermal radiation band (infrared band) is zero.
6. Application of coating technology in anti-counterfeiting technology
There are many types of anti-counterfeiting films, which can be divided into reflective and transmissive methods from the use method; direct coating type, indirect coating type or indirect coating type of scraping type can be classified into the film type.
7. Application of coating technology in aircraft protective coating
The titanium alloy fasteners of the aircraft were originally plated with cadmium by electroplating. However, in the cadmium plating, hydrogen is contained, so during the flight, it is corroded by the atmosphere and seawater, and the coating is prone to "cadmium brittleness" and even "air disaster". In 1964, the use of ion plating to plate aluminum on titanium alloy fasteners solved the "cadmium brittle" problem of aircraft parts. In the ion plating technique, since a negative bias is applied to the workpiece, a "pseudo-diffusion layer" can be formed and the film layer structure can be refined, so that the corrosion resistance of the film layer can be remarkably improved.
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8. Application of coating technology in optical instruments
The familiar optical instruments include telescopes, microscopes, cameras, range finder, mirrors, glasses, magnifiers, etc. in daily necessities. They are all inseparable from coating technology. The coated film has a reflective film, an anti-reflection film and absorption. Several kinds of membranes.
9. Application of coating technology in the field of information storage
The film material is recorded as information on the storage medium, which has the unique advantage that the eddy current loss can be neglected because the film is thin; the magnetization reversal is extremely rapid; the bistable state parallel to the film surface is easy to maintain.
In order to record and store information more precisely, it is necessary to use coating technology.
10. Application of coating technology in sensors
In sensors, semiconductor materials that are extremely sensitive to electrical properties, chemical quantities, and variations thereof are used. In addition, most of them utilize the surface and interface properties of semiconductors, and it is necessary to increase the area as much as possible, and it can be industrialized and produced at a low price, so that there are many cases in which a film is used.
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11. Application of coating technology in integrated circuit manufacturing
The protective layers (SiO2, Si3N4), electrode lines (polysilicon, aluminum, copper and their alloys) in the transistor circuit are mostly CVD technology, PVCD technology, vacuum evaporation metal technology, magnetron sputtering technology and RF sputtering technology. One of the core technologies for preparing integrated circuits by vapor deposition can be seen.