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  • Comparison Of Different PVD Coating Technologies
    Mar 29, 2018


    Modern PVD coating technologies are numerous and have their own characteristics. Evaporation coating technology, magnetron sputtering technology and cathode arc technology all has their own different application ranges.


    The evaporation coating technology is very suitable for the decorative coating of color stainless steel. After coating, the surface of the workpiece is smooth, the roughness is low, the appearance is beautiful, the surface quality is very high, but the bonding force between the coating and the matrix is poor.


    Although magnetron sputtering technology is the deposition of large droplets, there is also partial target ionization. Therefore, this kind of coating technology ensures the smooth appearance of the coating while greatly improving the adhesion between the coating and the substrate. Magnetron sputtering technology is very suitable for the coating of plastic molds.


    The cathode arc technology can ensure the ionization of more than 90% of the target, so the bonding force between the coating and the matrix can be greatly improved. However, as the cathode arc technology is not deposited of large particles, the surface smoothness of the coating decreases, which is suitable for the coating of the tool.


    The crystal grain sizes of the three technologies are very different. Due to the high ionization rate in cathodic arc technology, the crystal grains of the coating are very fine, followed by the magnetron sputtered grains and the coating particles of the vapor deposition technique are the largest.


    Since any method has its applicability, and should be choose the appropriate coating method according to their requirements in actual production, truly make the best use. At present, the main application of stainless steel processing in China is PVD evaporation technology. The technology is relatively easy to operate, the investment of equipment is small, the effect of the product is fine and the profit is great, so the vacuum evaporation industry of stainless steel PVD has developed very rapidly in these years.