What are the applications of coating?

- Nov 29, 2018-

What are the applications of coating?

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1. Application of coating technology in decoration

With the development of economy and the improvement of living standards, people like to hand watchcase, watchband, clothing, lighting, eyeglasses frame, indoor and outdoor decorative parts, hardware cases and bags, mobile phone case, mobile phone video screen, sanitary ware, food packaging and other decorative fine decoration colorful.



2. Application of coating technology in metal cutting tools such as tools and molds

In life we will see gold, cobalt copper color, black and other seven miscellaneous eight color drill, milling cutter, mold, etc., these are the coating tools after coating technology processing.

(1) The golden color is TiN and ZrN coated on the cutter. TiN is the first widely used hard layer material.

(2) The black one is the TiC and CrN coating applied on the cutting tools.

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


3. Application of coating technology in building glass and automobile glass

Building glass has two basic functions of light transmission and heat insulation. Ordinary glass can radiate energy through most of the sun's rays, which is very beneficial for lighting and absorbing the energy of the sun's rays. And to dimensional infrared radiation, although common glass can prevent indoor quantity of heat to pass through directly outdoor, but the secondary heat that heat is absorbed by glass hind radiates heat also can cause very big loss. With the development of economy, common glass can't meet people's requirement more and more. But the sunlight control membrane and the low radiation membrane can exactly make up for the ordinary glass in this aspect insufficiency. The sunshine control film can meet the requirement of lowering indoor temperature in low latitude area. However, the low-radiation film can meet the requirements of fully accepting solar radiation energy and maximally preventing indoor heat outflow in high-latitude areas.


Coating the glass with TiO2 makes it fog-proof, moisture-proof and self-cleaning. This process has a good application in automobile glass.


4. Application of coating technology in flat panel display

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


5. Application of coating technology in solar energy utilization

When it is necessary to use solar thermal energy effectively, it is necessary to consider the absorption surface that absorbs more solar light and has less loss due to thermal radiation. The peak of the solar spectrum is about 2-20 m wavelength of infrared band. Because of the difference between solar radiation and thermal radiation spectrum in wavelength, the absorption surface with wavelength selection must be considered in order to effectively utilize solar thermal energy. Ideal choice for absorption surface is the solar radiation spectrum band (visible) absorption (Α) is 1, the thermal radiation wavelengths (infrared) radiation rate (Ε) is 0.


6. Application of coating technology in anti-counterfeiting technology

There are many types of anti-counterfeiting film, from the use of methods can be divided into reflection type and transmission type; From the film system can be divided into direct film type, indirect film type or indirect film clip - and - paste type.


7. Application of coating technology in aircraft protective coating

Aircraft titanium alloy fasteners, the original use of electroplating method cadmium plating. But in cadmium plating contains hydrogen, so in the process of flight, by the atmosphere, sea corrosion, coating easy to produce "cadmium brittle", or even cause "air crash". In 1964, the problem of "cadmium brittleness" of aircraft parts was solved by aluminum plating on titanium alloy fasteners by ion plating. In ion-plating technology, due to the negative bias on the workpiece, a "pseudo-diffusion layer" can be formed and the structure of the film layer can be refined, so the corrosion resistance of the film layer can be significantly improved.


8. Application of coating technology in optical instruments

The optical instrument that people is familiar with has telescope, microscope, camera, rangefinder, and the mirror in daily necessities, glasses, magnifying glass to wait, they cannot leave coating technology, the film that plating makes has reflex film, increase permeability film and absorption film to wait a few kinds


9. Application of coating technology in the field of information storage

As a storage medium for information recording, thin film materials have unique advantages: because the thin film can ignore eddy current loss; Magnetic reversal is extremely rapid; The bistable state parallel to the membrane surface is easy to maintain.


In order to record and store information more accurately, it is necessary to use coating technology.


10. Application of coating technology in sensors

In sensors, those electrical properties are more sensitive to physical quantities, chemical quantities and their changes, semiconductor materials. In addition, most of them are used semiconductor surface, interface properties, need to increase its area as far as possible, and can be industrialized, low price production, so the use of thin film is a lot of cases.


11. Application of coating technology in IC manufacturing

Protective layer (SiO2, Si3N4) in transistor circuit, electrode pipeline (polysilicon, aluminum, copper and alloy), etc., are mostly CVD technology, PVCD technology, vacuum evaporation metal technology, magnetron sputtering technology and rf sputtering technology. It can be seen that gas deposition is one of the core techniques for preparing integrated circuits.