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Understand evaporation coationg machine

Understand evaporation coationg machine

2020-08-01

Understand evaporation coationg machine


Vacuum ion plating devices formed films by combining the vaporized metals  and reactive gases,, which is more wear-resistant than wet coating, and effectively to improving the service life of the product. During the coating process, when a discharge occurs, the film-forming metal atoms are ionized in the plasma with high kinetic energy, thereby accelerating and colliding with the substrate, and to formed film with higher adhesion.


vacuum coating machine



Physical vapor deposition (PVD) is a technology that uses physical processes such as thermal evaporation, glow discharge or arc discharge to deposit the required coating on the surface of the substrate. The School of Materials Engineering can provide services in two physical vapor deposition technologies, sputtering coating and ion coating.


2. Main technical features


The physical vapor deposition technology has the following characteristics: a wide range of coating materials, can be coated with various metals, alloys, oxides, nitrides, carbides and other compound coatings, and can also be coated with multiple or composite layers of metals and compounds; strong coating adhesion ; The process temperature is low, and the workpiece generally has no problems such as thermal deformation or material deterioration.

evaporation coationg machine/PVD Vacuum coating machine/evaporation coationg machine/PVD Vacuum coating machine

3. Application


The application of physical vapor deposition coating technology can be roughly divided into two categories: mechanical functional film and physical functional film. The former includes surface strengthening film materials such as wear resistance, friction reduction, heat resistance, and corrosion resistance, and solid lubricating film materials; the latter includes electrical, magnetic, acoustic, optical and other functional film materials.


Coating tools, molds and other surfaces with TiN, TiC and other superhard coatings, with low friction coefficient, good chemical stability, and excellent heat resistance, wear resistance, oxidation resistance, impact resistance, etc., which can improve the performance of tools, molds, etc. Working characteristics can increase the service life, and generally increase the tool life by 3-10 times.


Lubricating oil should not be used for mechanical parts working under special conditions such as high temperature, low temperature, ultra-high vacuum, and radiation. Only solid lubricants such as soft metals or layered substances should be used. Among them, the sputtering method is very effective in preparing Mo2S film and polytetrafluoroethylene film. The Mo2S film obtained by this method has good compactness and excellent adhesion, and the friction coefficient is in the range of 0.02-0.05. The lubricating properties of the PTFE film prepared by the sputtering method are not affected by the environmental humidity, and can be used in the atmospheric environment for a long time. It is a promising solid lubricant. The upper limit of its use temperature is 50℃, and it loses lubricity when it is lower than -260℃. Sputtering films such as Mo2S and PTFE have little change in performance after being placed for a long time. This is an ideal solid lubrication for equipment that requires reliable long-term standby and sudden use, such as shockproof, alarm, fire protection, and safety devices. Agent.


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