Industrial aluminum corrosion knowledge

Industrial aluminum profiles are subject to some corrosion during use. Corrosion is also a subcategory. Today, Qingdao Ruixinyuan Logistics Equipment Co., Ltd. analyzes the corrosion of industrial aluminum profiles for everyone. I believe we must like the small series to introduce this knowledge.

 

The first is pitting corrosion, which can also be referred to as pitting corrosion. It is an extremely localized corrosion pattern in the metal that produces needlepoints, dots, and holes. Aluminum can cause pitting in the atmosphere, fresh water, and neutral aqueous solutions. Severe can also lead to perforation, but the corrosion hole may eventually stop developing, and the amount of corrosion is maintained at a limit value. Pit corrosion is a unique form of anode reaction and is an autocatalytic process. The second is galvanic corrosion. Galvanic corrosion is also a characteristic corrosion pattern of aluminum. The natural potential of aluminum is very negative. When aluminum is in contact with other metals, industrial aluminum profiles are always at the anode to accelerate corrosion. Galvanic corrosion can also be referred to as bimetallic corrosion, the severity of which is determined by the relative position of the two metal potential sequences.