Under laboratory conditions, electrode potential and pH values generated during crack tip dissolution are measured on stress corrosion cracks in metals in 3% NaCl solution. Metal dissolution in the crack tip is accompanied by hydrogen depolarization and hydrogen release. Hydrogen depolarization is the main depolarization reaction. An effort is made to reduce the crack growth by inhibiting hydrogen depolarization using CH3COONa salt.

Subject
Depolarization, Crack growth, Sodium chloride, Metal dissolution, Corrosion cracking, Stress cracking, Acidity, Sodium chloride solution, Metals, Steel, Stress corrosion cracking, Electrode potential, Hydrogen
Keywords:
crack tip dissolution, hydrogen depolarization
NACE International
1993
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