Study on corrosion inhibition performance of 4,5-diamino-6-hydroxy-2-mercapto-pyrimidine film on copper against NaCl solution

• Main Authors: LIU Zequn, FAN Juanjuan, JIANG Yueyue, ZHOU Yang, YING Ye, GUO Xiaoyu, YANG Haifeng
• Format: Article
• Language: English
• Published: Academic Journals Center of Shanghai Normal University 2019-04-01
• Series: Journal of Shanghai Normal University (Natural Sciences)
• Subjects: copper;corrosion inhibition;electrochemical impedance spectroscopy (EIS);polarization;Raman spectroscopy
• Online Access: http://qktg.shnu.edu.cn/zrb/shsfqkszrb/ch/reader/view_abstract.aspx?file_no=20190207
• ISSN: 1000-5137; 1000-5137

4,5-diamino-6-hydroxy-2-mercapto-pyrimidine (MPD) molecule was adsorbed at the copper surface via self-assembly method,and its corrosion inhibition performance in 3.5% (mass fraction) NaCl solution was investigated by electrochemical polarization,electrochemical impedance spectroscopy (EIS),and Raman spectroscopy.The maximal inhibition efficiency of MPD reached 98.1% under the optimal assembly condition.Raman studies reveale that MPD molecules are adsorbed on the copper surface via N₉-H₁₀ and S₇-H₈.