What is metal finishing? Mention any f technological importance.

Definition: “It is a process of modifying surface properties of metals by the deposition of a layer of another metal or polymer on its surface or by the formation of an oxide film”.

The main technological importance of metal finishing include :-

[1] Imparting the metal surface to higher corrosion resistance.

[2] Providing electrical and thermal conducting surface.

[3] Imparting thermal resistance and hardness.

[4] In the manufacture of electrical and electronic components such as PCB’s, capacitors contacts, etc.

[5] To increase the decorativeness of metal surface.