Define composition, stress, and concentration cells

Define composition, stress, and concentration cells:

Composition cells 

• It refer to the variation in the composition of the metal surface, which can lead to different corrosion rates in different areas of the metal. 
• This can occur due to differences in the composition of the metal, such as impurities, or due to differences in the way the metal has been processed.

Stress cells refer 

• It to the presence of stress on the metal surface, which can also lead to differences in the corrosion rate. 
• This can occur due to the presence of physical stress, such as bending or compression, or due to the presence of chemical stress, such as changes in temperature or pH.

Concentration cells 

• It refer to differences in the concentration of the electrolyte in different areas of the metal surface, which can also lead to variations in the corrosion rate. 
• This can occur due to differences in the flow of the electrolyte or due to differences in the way the metal has been processed.