Study on the performance of AZ31 magnesium alloy magnetron sputtering aluminized film on the vacuum coating equipment
The innovative method of multi-arc ion plating on vacuum coating equipment, the so-called multi-arc ion plating is to treat the plating material and the substrate to be plated indoors, and the multi-arc ion plating coating of the vacuum coating machine uses a certain method to heat the material to be plated to evaporate or sublimate. And a process of flying and sputtering to the surface of the substrate to be plated to form a film.
The multi-arc ion plating method has many advantages in film formation under conditions, which can reduce the collision of atoms and molecules of the evaporation material in the process of flying to the substrate, and reduce the chemical reaction between the active molecules in the gas and the evaporation source material ( Such as oxidation, etc., and reducing the amount of gas molecules entering the film into impurities during film formation, thereby providing density, purity, deposition rate, and adhesion to the substrate.
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The multi-arc ion plating process of vacuum coating equipment not only avoids the shortcomings of traditional surface treatment, but also has various technical indexes superior to traditional techniques, and is widely used in hardware, machinery, chemical, mold, electronics, instruments and other fields. What are the technical innovations of catalytic fluids compared to conventional treatments?
1. Multi-arc ion plating film does not need electricity, reduces cost and cost is only one-half of multi-arc ion-coated nickel, one-third of multi-arc ion-coated chromium in vacuum coating machine, and one-quarter of stainless steel. Repeated use greatly reduces costs.
2. The multi-arc ion plating film is easy to operate, the process is simple, and the metal base member is immersed in the neat liquid, “one bubble is ready”, and no processing is required when reworking.
3, multi-arc ion plating film is non-polluting, non-toxic and tasteless, no three waste discharge, is a national environmental protection product technology.
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4. Multi-arc ion plating is easy to handle and easy to use; metal base parts with complex shapes can be processed.
5. The hardness of the multi-arc ion plating film is large, the hardness is enhanced, and the hardness of the metal bubble of the catalytic bubble is several times that of the multi-arc ion plating process.
6. The multi-arc ion plating film will not rust, and the metal base material soaked in the catalytic liquid has penetrated into the skin, and it does not peel or fall off.
Study on Properties of AZ31 Magnesium Alloy Magnetron Sputtering Aluminized Film
The aluminum protective film was coated on the surface of AZ31 magnesium alloy by ultra-vacuum magnetron sputtering coating equipment. The composition and micro-mechanical properties of the coating were studied by glow discharge spectroscopy and nanoindentation/scratch test. The distribution of film depth. The results show that the aluminum coating is formed on the surface of the magnesium alloy substrate, and there is a mixed transition layer between the coating and the substrate. The surface hardness and elastic modulus of the aluminum coating are higher than that of the magnesium alloy matrix, and decrease with the increase of the depth. It is well bonded to the substrate and exhibits certain plasticity. The aluminized film is beneficial to the formation of the surface protective layer of the magnesium alloy.
Magnesium alloys do not form protective passivation films on the surface like aluminum alloys in corrosive environments, and are susceptible to galvanic corrosion as anodes, which limits their application to some extent. Forming a dense layer of aluminum or alloy on the surface of the magnesium alloy can effectively slow the corrosion of the magnesium alloy [1-2]. If the aluminum protective layer is sprayed on the surface of the magnesium alloy, the corrosion protection layer can be effectively formed. The coating is thicker and the surface roughness is higher.
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Magnetron sputtering coating is an important physical vapor deposition coating technology. Sputter coating refers to bombarding the surface of a target with nuclear energy particles in a vacuum chamber, and atomic and other particles in the target are transmitted by particle momentum transfer. A technique of depositing a film on a substrate to form a film. The use of magnetron sputtering to form a protective film on the surface of magnesium alloy to improve the corrosion resistance and wear resistance of the alloy has made some encouraging progress [5]. In this paper, the ultra-vacuum magnetron sputtering coating equipment was used to coat the surface of AZ31 magnesium alloy with magnetron sputtering aluminum protective film. The surface film was studied by glow discharge spectroscopy and nano-indentation scratch test technology. Composition and micromechanical properties.