How to improve the adhesion strength of the filter film layer?

Our filter surface facial mask layer should improve adhesion, film firmness and product durability. What are the methods to improve film strength ˉ Our processing technology involves pre-treatment of the filter substrate to be coated before plating, including processes such as dust removal, oil removal, oxide film removal, and gas adsorption, such as ultrasonic cleaning. The filter substrate needs to be heated in order to reduce membrane structural defects, strengthen the film layer junction, and reduce the internal stress of the filter. However, if the temperature of the filter is too high, the heat will lead to high stress and control the deposition rate. Rapid deposition is not conducive to the normal growth process of the film, such as re junction; A base film, transition film, and gradient film must be applied between the filter substrate and the film layer to enhance the firmness of the filter film layer and improve the adhesion of the film layer.

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Hanzhong Brisun Optics Co., Ltd. Is the high precision optical element manufacturer provides customized production of Various optical lenses, including spherical lens, cylindrical lens, optical window, mirror, prism, filter, metal base mirror and other high-precision optical elements. The base materials include various optical glass, fused quartz, calcium fluoride (CaF2), zinc selenide (ZnSe), germanium (GE), silicon (SI), sapphire, metal and other materials. And provide antireflective film, high reflection film, spectroscopic film, metal film and other optical coatings.

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