전기화학적 임피던스 분광법(EIS)을 이용한 아크 금속용사 피막의 NaCl 3.5wt%에서의 부식거동에 관한 실험적 연구

Abstract

In this study, Electrochemical Impedance Spcectroscopy (EIS) experimental was conducted in 3.5wt% NaCl solution in order to analyze corrosion behavior. Linear polarization result presents that corrosion current density of Al-coated model is higher than bare model. As a result of EIS experiment, more exposure to a long time to 3.5wt% NaCl Solution electrolyte to penetrate through the pores and it was confirmed that coating performance was improved by clogging the pores due to corrosion in pores