Corrosion Degradation 0f a metal due to reaction with its environment Impairs function and appearance of component.

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Presentation transcript:

Corrosion Degradation 0f a metal due to reaction with its environment Impairs function and appearance of component

Electrochemical Cell Anode: oxidizes; corrodes Cathode Electrical connection Electrolyte

Reactivity Concentration of reactants Temperature Catalysts

Uniform corrosion

Galvanic corrosion

Concentration cell

Pitting

Oxygen Concentration Cell

Crevice Corrosion

Filiform Corrosion

Fretting Corrosion

Intergranular Corrosion

Intergranular Corrosion

Stress Corrosion Cracking

Stress Cell

Exfoliation

Corrosion Fatigue

Erosion corrosion

Selective Leaching

Hydrogen Embrittlement

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