Corrosion Types - Corrosion Forms

Although there is only one fundamental mechanism of corrosion, the electrochemical cell, there are several Corrosion forms or Corrosion Types  that can occur. Each form of attack has a specific arrangement of anodes and cathodes and the corrosion which occurs has a specific location and pattern. Each form of corrosion can be effectively controlled during design if it is anticipated. By understanding the various forms of corrosion, the conditions under which they occur, and how they are quantified, they can each be addressed and controlled. The most important Types of Corrosion are:

• Uniform Corrosion                                              

• Concentration Cell Corrosion.

• Intergranular Corrosion

• Atmospheric Corrosion

• Erosion Corrosion

• Fretting Corrosion

• Dealloiyng

• Formicary Corrosion

• Microbiological Corrosion - MIC

• Galvanic Corrosion or Bimetallic Corrosion

• Pitting Corrosion - Crevice Corrosion

• Stress Corrosion Cracking

• Cavitation Corrosion

• Hydrogen Embrittlement

• Immunity

• Corrosion Fatigue