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Introduction
Friction hinges are widely used in various electronic devices, such as laptops, tablets, and smartphones. However, due to the exposure to air and other environmental factors, friction hinges are prone to corrosion and oxidation, which can affect their performance and durability. Therefore, anti-corrosion and anti-oxidation treatment of friction hinges is essential to ensure their long-term reliability and functionality.
Anti-corrosion treatment
Corrosion is the process of deterioration of a metal due to chemical reactions with the environment. To prevent corrosion of friction hinges, several anti-corrosion treatments can be applied:
- Coating: Applying a protective coating on the surface of the friction hinge can prevent the metal from coming into contact with the environment. Common coatings include zinc, chrome, and nickel.
- Anodizing: Anodizing is an electrochemical process that creates a protective oxide layer on the surface of the metal. This layer is corrosion-resistant and can also improve the appearance of the friction hinge.
- Passivation: Passivation is a chemical process that removes free iron and other contaminants from the surface of the metal, creating a protective oxide layer. This process is commonly used for stainless steel friction hinges.
Anti-oxidation treatment
Oxidation is the process of the formation of a metal oxide layer on the surface of the friction hinge due to exposure to air and moisture. This layer can cause the friction hinge to become stiff and difficult to move. To prevent oxidation, the following anti-oxidation treatments can be applied:
- Lubrication: Applying a lubricant on the surface of the friction hinge can reduce friction and prevent the formation of an oxide layer.
- Vacuum packaging: Friction hinges can be vacuum-sealed to prevent exposure to air and moisture, which can prevent oxidation.
- Nitriding: Nitriding is a process that introduces nitrogen into the surface of the metal, creating a hard and wear-resistant layer. This layer can also prevent oxidation.
Conclusion
Anti-corrosion and anti-oxidation treatment of friction hinges is crucial to ensure their long-term functionality and reliability. Coating, anodizing, passivation, lubrication, vacuum packaging, and nitriding are some of the commonly used treatments to prevent corrosion and oxidation. By applying these treatments, friction hinges can maintain their performance and durability, even in harsh environments.