What are the methods for surface treatment of Magnesium aluminum alloy?
Publish Time: 2024-06-11
There are various methods for surface treatment of Magnesium aluminum alloy, which are aimed at improving its appearance, corrosion resistance, wear resistance and other properties. The following is a brief introduction to the surface treatment of Magnesium aluminum alloy:
1. Cleaning
The first step in the surface treatment of Magnesium aluminum alloy is cleaning, which aims to remove impurities such as oil and dirt on the surface and provide a cleaning basis for subsequent treatment processes. Common cleaning methods include alkaline cleaning, acid cleaning and organic solvent cleaning. Alkaline cleaning can remove all oil and dirt, but it may cause temporary rust on the surface of Magnesium aluminum alloy, so anti-rust measures need to be taken.
2. Descaling
Magnesium aluminum alloy is prone to form an oxide layer on the surface, which affects its appearance and performance. Therefore, descaling is an important step in the surface treatment of Magnesium aluminum alloy. Descaling methods include mechanical descaling, electrochemical descaling and chemical descaling. Mechanical descaling mainly uses mechanical grinding or sandblasting to remove the surface oxide layer; electrochemical descaling uses electrolysis to remove the surface oxide layer; chemical descaling uses chemical agents to dissolve the surface oxide layer.
3. Anodic oxidation
Anodic oxidation is an electrochemical process that forms an oxide film on the surface of Magnesium aluminum alloy. This oxide film can improve the corrosion resistance and wear resistance of Magnesium aluminum alloy, and the color and thickness of the oxide film can be adjusted as needed. The surface of Magnesium aluminum alloy after anodization is not only beautiful, but also has better protective performance.
4. Chemical oxidation and organic protective layer coating
Chemical oxidation is a simple and economical surface treatment method for Magnesium aluminum alloy, which can form an oxide protective film on the surface of Magnesium aluminum alloy to improve corrosion resistance. Organic protective layer coating is to apply a layer of organic coating on the surface of Magnesium aluminum alloy for external protection and decoration of equipment.
In summary, there are many surface treatment methods for Magnesium aluminum alloy, including cleaning, descaling, anodizing, chemical oxidation and organic protective layer coating. The choice of these methods depends on the specific application requirements and process conditions.
