Application of nickel-chromium alloy coating on vacuum coating equipment
①The application of the amorphous structure of the nickel-chromium coating of the vacuum coating equipment has different chromium content in the coating, and its performance is very different. If the chromium in the nickel-chromium coating of the vacuum coating machine reaches a certain content, a layer of amorphous nickel-chromium is formed on the surface The alloy structure has high corrosion resistance and is even better than stainless steel with similar chromium content.
②The nickel-chromium alloy of the vacuum coating machine replaces the metal chromium layer, so that the coating layer has a high temperature-resistant hardness. The chromium layer will soften at higher temperatures. The hardness begins to decrease at 300°C, and the coating at 510°C is already fully annealed. In addition, the chrome layer of the vacuum coating equipment also has a crack structure, which reduces the protection of the substrate. The problem can be solved by replacing the chromium layer with the nickel-chromium alloy of the vacuum coating machine.
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③ The nickel-chromium alloy coating of the vacuum coating machine can reduce the amount of stainless steel. Vacuum coating equipment containing chromium alloy will form a layer of chromium passivation film on the surface to block the penetration of the corrosion medium. When the chromium content in the alloy exceeds 20%, the amorphous film formed on the surface of the alloy has high corrosion resistance. Depositing a layer of chromium-nickel alloy on the surface of metal materials can improve the corrosion resistance of the substrate, thereby reducing the amount of stainless steel and saving nickel-chromium resources.
④ Vacuum coating electromechanical deposition of iron-chromium-nickel ternary alloy to obtain corrosion-resistant materials similar to 18Cr-8Ni stainless steel. From the standpoint of hardness, discoloration resistance and corrosion resistance, the iron-chromium-nickel alloy coating is ideal. In order to obtain a ternary alloy with similar properties to stainless steel, research has been conducted, and there are currently such as: current efficiency is only 30% to 40%, the smooth surface thickness does not exceed 50um, and the internal stress is large, which will cause micro-cracks on the surface of the coating.
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Zunhua Baorui Titanium Technology Co., Ltd. is a well-known vacuum coating manufacturer, specializing in the manufacture of various vacuum coating equipment, providing customized process solutions and coating equipment for industry customers.