What is surface treatment?

Surface treatment refers to a process applied to the surface of a material to make it better in some way, such as by making it more resistant to corrosion or wear, or by improving its conductivity or adhesion. It can also be used to enhance a material's appearance. The process can involve the application of a coating or other modification to the surface of the material. The specific type of surface treatment used can depend on the nature of the material and the desired effect.