Acridine as effective corrosion inhibitor for hot dipped coatings on steels in diluted HCl solution
The environmental and health hazards associated with chromium-containing solution have aroused wide public concern, so attempts have been made to find alternatives for metal finishing. In the present paper, inhibition effect of acridine on corrosion of hot dipped Zn and Zn-Al alloy coatings on steels in diluted hydrochloric acid was investigated using weight loss test, electrochemical measurement, and quantum chemistry analysis. The results showed that inhibition efficiency increased with inhibitor concentration, and the highest inhibition efficiency was up to 99％. And acridine adsorbed on coating surface by chemisorption. Quantum chemistry calculation results indicated that acridine possesses planar structure with a number of active centers, and showed a good ability of electron exchange with the coating surface.
Hot dipped coating Electrochemical measurement Acid inhibitor Weight loss test Quantum chemistry analysis
Hong Ju Tianshu Peng Yan Li
College of Machinery and Electronic Engineering, China University of Petroleum, Dongying, 257061, PR Computing Centre of Gansu Provincial Department of Science & Technology,Lanzhou, 730030, PR, China Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, PR, China
国际会议
青岛
英文
1035-1038
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）