What is the primary function of surface treatment in material processing?

The primary function of surface treatment in material processing is to improve corrosion resistance and wear resistance. Various processes, such as coating, plating, and heat treatment, are employed to modify the surface characteristics of materials, enhancing their durability and lifespan in different environments. By creating a barrier or altering the surface properties, these treatments can significantly reduce wear and safeguard against environmental factors like moisture and chemicals that can lead to corrosion.

While enhancing aesthetic appeal is a consideration in some applications, and certain treatments can affect thermal conductivity or density, the core purpose of surface treatment focuses on increasing the material's resistance to wear and corrosion, making it more suitable for demanding applications where durability is critical.