Aluminum base fiberglass board has been widely used in many fields due to its excellent performance. However, it may face corrosion problems in some complex use environments. Surface treatment process is an important means to improve the corrosion resistance of aluminum base fiberglass board. Through specific treatment methods, a protective film can be formed on its surface, which effectively prevents the contact between the external corrosive medium and the board, thereby improving its corrosion resistance.
Chemical plating is a process of depositing a metal or alloy coating on the surface of aluminum base fiberglass board through chemical reaction. For example, chemical nickel plating is a common method, and the nickel coating has good corrosion resistance and chemical stability. During the chemical plating process, nickel ions are reduced to metallic nickel on the surface of the board and deposited to form a uniform and dense coating. This coating can isolate the aluminum base fiberglass board from water, oxygen and other corrosive substances in the outside world, acting as a barrier. At the same time, the nickel coating itself has high hardness and wear resistance, and is not easy to be scratched or worn, which further enhances the corrosion resistance of the board.
Anodizing is a process in which an aluminum base fiberglass board is used as an anode and electrolyzed in a specific electrolyte to form an oxide film on its surface. The oxide film formed by anodizing is mainly composed of aluminum oxide and has good corrosion resistance and insulation. The thickness and porosity of the oxide film can be adjusted by controlling the electrolysis parameters. A thicker oxide film with lower porosity can provide better protection. It can prevent the corrosive medium from penetrating into the interior of the board, and can also absorb some rust inhibitors or lubricants to further improve the corrosion resistance. In addition, the anodized film also has good wear resistance and decorative properties, which can meet the needs of different application scenarios.
Applying an anti-corrosion coating is to apply a layer of anti-corrosion coating on the surface of the aluminum base fiberglass board, such as epoxy resin coating, polyurethane coating, etc. These coatings will form a continuous protective film after curing, which can effectively isolate the board from contact with external corrosive media. The anti-corrosion coating has good chemical resistance, water resistance and weather resistance, and can resist the erosion of corrosive substances such as acids, alkalis, and salts. At the same time, the coating can also add some anti-corrosion pigments or additives, such as zinc powder, chromate, etc., as needed to further improve its anti-corrosion performance. In addition, the coating process is simple and low-cost, and different coating thicknesses and colors can be selected according to different needs.
Surface passivation is a process of forming a passivation film on the surface of aluminum base fiberglass board by chemical or electrochemical methods. The passivation film is usually a metal oxide or hydroxide film, which can form a stable protective film on the surface of the board to improve its corrosion resistance. For example, the chromate passivation process can form a passivation film containing chromium on the surface of the aluminum base fiberglass board, and the chromium element can improve the stability and corrosion resistance of the passivation film. The passivation film can reduce the activity of the board surface, making it less likely to react chemically with external corrosive media, thereby extending the service life of the board.
In practical applications, in order to obtain better corrosion resistance, multiple surface treatment processes are often used in combination. For example, the aluminum base fiberglass board is first anodized to form an oxide film, and then an anti-corrosion coating is applied on the surface of the oxide film. This composite treatment process can give full play to the advantages of various processes. The oxide film provides a good base and preliminary protection, and the coating further enhances the corrosion resistance and decorativeness. In this way, a multi-layer protection system can be formed on the surface of aluminum base fiberglass board, effectively improving its corrosion resistance in harsh environments.
The surface treatment process of aluminum base fiberglass board plays an important role in improving its corrosion resistance. Chemical plating, anodizing, coating anti-corrosion coating and surface passivation can improve its corrosion resistance by forming a protective film on the surface of the board or changing the surface properties. Different surface treatment processes have their own characteristics and scope of application. In practical applications, the appropriate surface treatment process can be selected according to the specific use environment and requirements, or multiple processes can be combined to obtain the best corrosion resistance and comprehensive performance to meet the use requirements of aluminum base fiberglass board in different fields.
