Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403

공학

한국표면공학회지 (53권5호 207-212)

Effect of ICCP Potential with Electrolyte on Corrosion and Discolor of Silver

은의 부식 및 변식에 미치는 전해질 용액에 따른 ICCP 전압의 영향

신병현;김도형;정원섭;
Shin, Byung-Hyun;Kim, Do-Hyung;Chung, Won-Sub;

부산대학교, 재료공학과, 소재기술연구소;부산대학교, 재료공학과;
Departments of Materials Science and Engineering, Pusan National University;The Institute of Materials Technology, Departments of Materials Science and Engineering, Pusan National University;

DOI : 10.5695/JKISE.2020.53.5.207

Abstract

Silver is an inexpensive precious metal and is used in various jewelry in Asia. Although silver has high potential, it has corrosion resistance that is vulnerable to boiling sulfuric acid and nitric acid. So, silver research is needed to prevent the corrosion with environment. But silver corrosion is not studied. sulfuric acid make the uniform corrosion and chloride ion make the pitting corrosion. ICCP inhibits the corrosion because it offset electrons. This study used a potential from - 4 V to 4 V to check the effect of potential. Corrosion rate is lowet at -1 V.

Keywords

Silver;ICCP;Electrochemical properties;Surface corrosion;Discolor;