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  • How To Keep The Coating Film Uniform
    May 26, 2018


    For different principles of coating, the factors that affect the uniformity of the vacuum coating machine are also different. And the concept of uniformity will also have different meanings as the size of coating and the composition of thin films is different.


    Uniformity of the film is mainly reflected in three aspects:


    1. Uniformity of thickness


    It can be understood as roughness. On the scale of the optical film (that is, 1/10 wavelength as unit, about 100A), the uniformity of the coating is already quite good. The vacuum coating equipment can easily control the roughness in the 1/10 range of the visible light wavelength, that is to say, for the optical properties of the film, the car lamp protection film vacuum coating machine has no barrier. 


    However, if it refers to the degree of uniformity on the atomic layer scale, that is to say to achieve a 10A or even 1A surface smoothness, it is now the main technical content and technical bottlenecks in vacuum coating.


    2. Uniformity of chemical constituents


    That is to say, in the film, the atomic composition of the compound can easily produce non-uniform properties because the scale is too small. If the plating process of the SiTiO3 film is not scientific, then the composition of the actual surface is not SiTiO3, but it may be the other proportion, the film deposited is not the chemical composition of the desired film. It is the technical content of the vacuum coating.


    3. Uniformity of lattice order


    The electroplating product determines that the film is single crystal, polycrystalline and amorphous, which is a hot issue in coating technology.


    IKS is committed to the R & D and production of vacuum coating machines. Vacuum coating equipment is widely used in automotive, electronics, watches, hardware other industries. Provide customized process solutions and vacuum coating equipment for customers.