Application field of vacuum coating technology

Application field of vacuum coating technology

1. In terms of decoration

With the development of the economy and the improvement of living standards, people like the hand watch case, watchband, clothing, lighting, glasses frame, indoor and outdoor decorative pieces, hardware watchcase, mobile phone case, mobile phone video, sanitary ware, food packaging and other decorative fine decoration colorful.

2. In cutting tools, dies and other metal cutting tools

In our daily life, we can see bits, milling cutters and moulds of 7 miscellaneous 8 colors, such as golden yellow, cobalt copper and black. These are coating tools processed by coating technology.

(1) golden yellow, is coated with TiN, ZrN coating on the tool, TiN is a widely used hard layer material.

(2) The black cutter is coated with TiC and CrN coatings.

(3) Cobalt copper color, is coated with TiALN coating on the tool.

3. Building glass and car glass

Building glass has two basic functions: light transmission and insulation. Ordinary glass can pass through most of the sun's radiation, which is very good for lighting and absorption of solar energy. And RADIATE TO SPACE INFRARED, ALTHOUGH COMMON GLASS CAN PREVENT INDOOR HEAT TO PASS OUTDOORS DIRECTLY, BUT THE SECOND HEAT THAT HEAT DISSIPATES AFTER BEING ABSORBED BY GLASS ALSO CAN CAUSE VERY BIG LOSS. With the development of economy, ordinary glass has been more and more unable to meet people's requirements, and daylight control film and low radiation film can make up for the shortcomings of ordinary glass in this respect. Anti-sunlight film can meet the requirements of low latitude areas to reduce indoor temperature; Low radiation film can meet the requirements of receiving solar radiation energy in high latitude areas and preventing indoor heat outflow. The glass surface is coated with a layer of TiO2 to make the glass have anti-fog, anti-dew and self-cleaning functions, which has a good application in automobile glass.

4. On a flat screen

All kinds of flat panel displays need to use a variety of films, almost all types of flat panel display devices need to use ITO films to meet the requirements of transparent appliances. It is no exaggeration to say that without thin-film technology, there would be no flat-panel display device.

5. In the use of solar energy

When effective use of solar heat energy is needed, it is necessary to consider the use of absorption surface which absorbs more solar rays and less loss caused by thermal radiation. The peak value of the solar spectrum is about 2 ~ 20 μm in the infrared band. Because solar radiation and thermal radiation spectra are different in bands, in order to effectively use solar thermal energy, the absorption surface of wavelength selection is considered. The ideal absorption surface selection is: the absorption rate (α) of the solar radiation spectrum (visible band) is 1, the emissivity (ε) of the thermal radiation spectrum (infrared band) is 0.

6. In anti-counterfeiting technology

There are many kinds of anti-counterfeit film, from the use of methods can be divided into reflective and transmission type; According to the film can be divided into direct coating type, indirect coating type or indirect coating clip type.

7. Protective coating for aircraft

Titanium fasteners for aircraft are cadmium plated by electroplating. However, cadmium plating contains hydrogen, so in the process of flight, corroded by the atmosphere and seawater, the coating is easy to produce "cadmium brittle", and even cause "air disaster". In 1964, in order to solve the problem of "cadmium embrittlement" of aircraft parts, aluminum plating process was adopted on titanium fasteners. In ion plating technology, due to the negative bias applied to the workpiece, the "pseudo-diffusion layer" can be formed and the structure of the film can be refined, so the corrosion resistance of the film can be significantly improved.

8. In optical instruments

People are familiar with optical instruments such as telescopes, microscopes, cameras, rangefinders, and daily life in the mirror, glasses, magnifying glass, etc., they are inseparable from the coating technology, the film plating reflection film, reflection film and absorption film.

9. In information storage

Thin film material as information recording medium has its unique advantages: because the thin film is very thin, eddy current loss can be ignored; Magnetization reversal; The bistability parallel to the membrane surface is easily maintained. In order to record and store information more accurately, it is necessary to use coating technology.

10. In the case of sensors

In sensors, semiconductor materials that are very sensitive to the electrical properties of physical quantities, chemical quantities and their variations are used. Besides, most of them are us