Evaluation method of zinc corrosion resistance of brass member

摘要

Problem to be solved: to provide a method for evaluating degassing corrosion which can be performed in a simple and short time to evaluate the presence or absence of degassing corrosion.Solution: a high potential holding step for measuring the natural potential of the brass member in the test liquid simulating a fresh water containing no residual chlorine, and holding the brass member at a constant potential higher than the natural potential, and a potential drop step for lowering the potential of the brass member from the constant potential.Diagram