MOISTURE RESISTANCE EVALUATION METHOD OF ELECTRODE AND EVALUATION DEVICE USED FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a moisture resistance evaluation method and an evaluation device, capable of quickly evaluating superiority of moisture resistance of an electrode.;SOLUTION: A substrate 4 provided with two or more electrodes 2a, 2b is immersed in test water 14, and a period until electric resistance between the electrodes 2a, 2b starts to increase is measured. Also, by cross-sectional observation of the electrodes 2a, 2b after immersion, the length of a crack generated in the substrate 4 and the inside of the electrodes 2a, 2b or on the interface between the electrodes 2a, 2b and the substrate 4 is measured. Or, by a surface/interface cutting device, the peel strength of the electrode is measured. By determining the deterioration rate of the electrodes 2a, 2b caused by the test water 14, such as corrosion rate, on the basis of electric resistance change, the generated crack length and peel strength change, superiority of moisture resistance is evaluated.;COPYRIGHT: (C)2015,JPO&INPIT