Friendly Inhibitor for Corrosion Inhibition of Copper in Sea Water
The inhibition and mechanism of corrosion of copper in sea water with and without inhibitors had been investigated by using weight-loss, electrochemical polarization and suface analysis technique SEM and XPS. It had been found that there was synergistic effect between BTA and sodium citrate. The inhibition efficiency was 96.0％ , and corrosion rate was 0.00431 mm/a in the proportion of 2 mg·L-1 BTA and 20 mg·L-1 sodium citrate inhibitor. It was a mixture inhibitor. The SEM images show that the surface of copper without inhibitors which was heavily corroded; but the surface of copper with inhibitors remained shiny after immersed in seawater after 6 day. The results of the XPS spectrum of the surface of copper indicated that the compound inhibitor formed a Cu (Ⅰ) - BTA and Cu (Ⅰ) -complex film on copper surface. The film was insoluble and would block the Cu dissolving as Cu+ and Cu2+ ions in sea water.
copper sea water corrosion inhibitor
RUI Yu-lan LIANG Ying-hua LU Mai-xi LIU Li
China Mining University of Science and Technology, Beijing 100083,China;College of Chemical Engineer College of Chemical Engineering and Biotechnology,Hebei Polytechnic University,Tangshan 063009,China China Mining University of Science and Technology, Beijing 100083,China
国际会议
北京
英文
29-31
2006-08-03（万方平台首次上网日期，不代表论文的发表时间）