Advertisement Remove all ads

P Distinguish Between Anodic and Cathodic Coating - Applied Chemistry 2

Distinguish between anodic and cathodic coating 

Advertisement Remove all ads

Solution

  Anodic coating    Cathodic Coating
1 This type of coating protect base metal sacrificially. 1 This type of coating protect the base metal because of high corrosion resistance and noble behaviour
2 The coating metal is at lower electrode potential than base m
etal.
2 The coating metal is at higher electrode potential than base metal.
3 Corrosion of base metal does not enhance even on breaking “anodic coating” as it heals its film 3 Corrosion of base metal enhances, if there is a small cut in coating
4 Eg. Galvanising i.e. Zn coating on iron/steel 4 Eg. Tinning i.e. tin coating on iron/steel/copper/brass.

 

Concept: Factors Affecting the Rate of Corrosion Relative Area of Anodic and Cathodic Parts
  Is there an error in this question or solution?
Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×