Comparative Study on the Cleaning Effect of Potassium Sodium Tartrate and EDTA on Surface Corrosion of Bronze
BI Jiangyuan1,2, SONG Shupeng1,2,*, DING Xing1,2, KE Deqing2, ZHOU Herong2
1 State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China 2 College of Materials Science and Metallurgical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
Abstract: In order to analyze the rust removal effect of simulated bronze corrosion and discuss its mechanism, different concentrations of EDTA and potassium sodium tartrate were investigated. Electrochemical test results show that the corrosion rates of both increases with the increase of solution concentration, and EDTA solution with the same concentration are lower than that of potassium sodium tartrate. SEM and XRD results show that 168 h potassium sodium tartrate effectively removes the green harmful rust layer, and the surface of the sample reveals the Cu2O and SnO2 rust layer, while EDTA partly remove the green rust layer, no new substances formed on the sample surface after cleaning. Both EDTA and potassium sodium tartrate are chelating agents. The chelation coordination form and ring formation structures are different, which result in diffe-rent adsorption capacity for Cu2+, and make obvious different cleaning effect.
毕江元, 宋述鹏, 丁兴, 柯德庆, 周和荣. 酒石酸钾钠和EDTA对青铜表面锈蚀的清洗效果对比研究[J]. 材料导报, 2023, 37(19): 22030208-6.
BI Jiangyuan, SONG Shupeng, DING Xing, KE Deqing, ZHOU Herong. Comparative Study on the Cleaning Effect of Potassium Sodium Tartrate and EDTA on Surface Corrosion of Bronze. Materials Reports, 2023, 37(19): 22030208-6.
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2023, Vol. 37 
