As a common metal material, aluminum plays an important role in a wide range of applications. However, due to the characteristics of its surface susceptible to oxidation and corrosion, in order to improve the durability and beauty of aluminum, surface treatment and corrosion protection technology become crucial. This article will discuss surface treatment methods and common anti-corrosion techniques of aluminum to help readers better understand how to protect and improve the performance and life of aluminum.
Surface cleaning and removal of oxide layer:
Prior to surface treatment, the aluminum first needs to be cleaned and oxide removal steps. The commonly used cleaning methods include mechanical cleaning, chemical cleaning and electrolytic cleaning. The cleaned surface of the aluminum will be easier for subsequent treatment and coating.
Mechanical surface treatment:
Mechanical surface treatment can change the surface shape and texture of aluminum by brushing, sanding or sandblasting. This method can not only increase the beauty of aluminum, but also improve its surface roughness, providing better conditions for coating adhesion.
Chemical surface treatment:
Chemical surface treatment is the use of chemical reactions to change the chemical properties of aluminum surface to improve its corrosion resistance. Common chemical treatment methods include pickling, acid solution treatment and alkaline solution treatment. These methods can form a protective oxidation layer or conversion film, improve the corrosion resistance and weather resistance of aluminum.
Anticorrosive coating:
After the surface treatment, various types of anti-corrosion coatings can be applied to further protect the aluminum. Common antiseptic coatings include organic coatings and inorganic coatings. Organic coatings include paint, film and powder coatings that provide aesthetics and weather resistance. Inorganic coatings such as anodized coatings offer higher corrosion resistance.
