COPPER PITTING CORROSION EVALUATION METHOD

PROBLEM TO BE SOLVED: To provide a copper pitting corrosion evaluation method allowing accurate evaluation of a progress state of pitting corrosion generated in copper being in contact with an aqueous system.SOLUTION: In a pitting corrosion evaluation method of copper, an evaluation electrode including a plurality of anodes 2 composed of copper pieces covered with a corrosion product and a cathode 3 composed of a copper plate whose contact liquid surface is not covered with the corrosion product is immersed in an aqueous system, and a current flowing through a circuit electrically connecting the anodes 2 with the cathode 3 is measured by a zero-shunt ammeter.