The main component of the aluminum alloy of the skid plate is aluminum. Aluminum is a very reactive amphoteric metal and will be corroded in acidic and alkaline environments. It will also corrode in humid environments. To prevent the rapid development of corrosion, it is usually anodized. . The aluminum or its alloy of the anode is oxidized, forming a thin layer of aluminum oxide on the surface, with a thickness of 5 to 20 microns, and a hard anodized film can reach 60 to 200 microns.
The anodized aluminum or its alloy of the anti-skid plate has improved its hardness and wear resistance, which can reach 250-500 kg/mm2. It has good heat resistance. The melting point of the hard anodized film is as high as 2320K. It has excellent insulation. The breakdown voltage is as high as 2000V, which enhances the corrosion resistance. It will not corrode in ω=0.03NaCl salt spray for thousands of hours. The thin layer of the oxide film has a large number of micropores, which can absorb various lubricants and is suitable for manufacturing engine cylinders or other wear-resistant parts; the film's micropores have strong adsorption capacity and can be colored into various beautiful and bright colors.
Many people think that anti-skid plates will not rust, because anti-skid plates are recognized by consumers for their superior corrosion resistance. The corrosion resistance of the anti-skid plate mainly depends on its alloy composition and internal structure, of which chromium plays a major role. Chromium has high chemical stability and can form a passivation film on the surface of carbon steel to isolate the metal from the outside world, protect the steel plate from oxidation, and increase the corrosion resistance of the steel plate. The anti-skid plate is prone to corrosion mainly in humid air; if organic juice (such as vegetables, noodle soup, etc.) adheres to the surface of the anti-skid plate, it is also prone to corrosion; when the anti-skid plate is exposed to an atmosphere containing a large amount of sulfides, carbon oxides, and chlorinated nitrogen When exposed to the environment, chemical corrosion will occur.