Question
a.
Erosion corrosion which is identified by surface grooves, occurs due to the combined action of corrosive environment and mechanical abrasion.
b.
Stress corrosion occurs due to the combined action of corrosive environment and the compressive stress.
c.
Stainless steel is prone to stress corrosion in solution containing chloride ion.
d.
In case of stress corrosion, the direction of crack propagation is perpendicular to the applied tensile stress.
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