Electrochemical mechanism of hot corrosion of Bi2O3-deposited copper

An electrochemical mechanism of hot corrosion of the Bi2O3-deposited copper is proposed. Oxygen ion transport across the oxide scale with liquid-channel grain-boundary structure (LGBS) is the rate-limiting step in the overall mechanism. The calculated and experimental values of the rate constant for hot corrosion of Bi2O3-deposited copper are of the same order of magnitude, which shows agreement between theory and experiment.