Performance comparison before and after aluminum surface treatment(一)

Aluminum, as a lightweight, corrosion-resistant metal material, plays a pivotal role in modern industry. However, the original aluminum surface often lacks sufficient protection and is easily corroded and damaged by environmental factors, thus affecting its performance and lifespan. Therefore, surface treatment of aluminum materials has become a necessary technical means, which can not only improve the aesthetics of aluminum materials, but also significantly enhance its performance.

1. Comparison of corrosion resistance
Although there is a naturally formed aluminum oxide film on the surface of the original aluminum material, this film is thin and uneven, and is easily eroded by corrosive media such as acid, alkali, salt spray, etc. After surface treatment, the corrosion resistance of aluminum has been significantly improved. For example, through anodizing, a dense aluminum oxide film will be formed on the surface of the aluminum material. This film has extremely high corrosion resistance and can effectively resist the erosion of various corrosive media. In addition, electrophoretic coating technology can also form a uniform and dense coating on the surface of aluminum materials, further improving its corrosion resistance.

2. Comparison of wear resistance
Raw aluminum has a low surface hardness and is susceptible to wear and scratches. After surface treatment, the wear resistance of aluminum has been significantly improved. Anodizing can form a layer of aluminum oxide film with higher hardness on the surface of the aluminum material. This film can effectively resist friction and scratches from external objects. Surface treatment technologies such as spraying and electroplating can also form a hard and wear-resistant protective layer on the surface of aluminum to further improve its wear resistance.