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Uniform corrosion of aluminum alloy refers to the corrosion pattern that occurs uniformly on the entire surface of the aluminum alloy. The relevant core information is as follows: 1. Reasons: The natural dense oxide film on the surface of aluminum alloys will be uniformly dissolved in a specific medium, losing its protective effect on the matrix, thereby causing uniform corrosion of the entire body. It is common in strong acid and alkali solutions such as phosphoric acid and sodium hydroxide. When the solution temperature increases and the solute concentration increases, the corrosion process will be significantly accelerated. 2. Typical characteristics: Corrosion advances simultaneously on the entire surface of the aluminum alloy. The surface presents uniform corrosion products or colors, and the entire surface is uniformly thinned. There are no obvious local pits or concentrated corrosion areas. During the corrosion process, the positions of the cathode and anode alternately change with time. The corrosion life of the component can be accurately estimated through the average corrosion rate. 3. Optimization of protective methods, materials and processes: Use aluminum alloy grades with better corrosion resistance, and use surface treatment processes such as anodization and electrostatic spraying to build a stronger artificial protective layer on the surface to isolate corrosive media. Environmental control: Avoid long-term direct contact of aluminum alloy with highly corrosive media such as strong acids and alkalis, control the concentration of corrosive substances in the processing and use environment, and keep the environment dry and clean. auxiliary protective means: Add an appropriate amount of corrosion inhibitor to the contact medium to inhibit the corrosion reaction rate ； A reasonable corrosion margin should be set aside in advance during the engineering design stage to avoid premature failure of components due to uniform thinning.