|
|
Inhibition Performance of Enhanced��Mo Inhibitor for Carbon Steel in 55% LiBr Solution |
LIANG Cheng��hao1,2,HU Xian��qi2 |
1. Electromechanics and Materials Engineering College, Dalian Maritime University, Dalian 116026, Liaoning, China; 2. School of Chemical Engineering, Dalian University of Technology, Dalian 116012, Liaoning, China |
|
|
Abstract The inhibition performance of enhanced��Mo inhibitor for carbon steel in 55% LiBr solution was measured by means of chemical immersion, electrochemical measurements, and physical detection technologies. Results indicated that enhanced��Mo inhibitor showed excellent inhibition performance of carbon steel in 55% LiBr solution, especially at high temperature. With increasing the temperature of solution from 160 �� to 240 ��, the corrosion rates of carbon steel increased from 17��67 ��m/a to 33��07 ��m/a. Enhanced��Mo inhibitor might improve the anodic polarization performance of carbon steel and widen the passive potential region of carbon steel in 55% LiBr solution. Enhanced��Mo inhibitor belongs to anodic inhibitor. In 55% LiBr solution, the relationship between corrosion current density icorr and corrosion potential Ecorr of carbon steel accorded with the equation lgicorr=-2��66-3��54Ecorr, and the value of cathodic Tafel constant ��c for the H2 reaction was 282 mVSCE. When 55% LiBr solution contained enhanced��Mo inhibitor, a passive film comprising Fe3O4 and MoO2 was formed on the carbon steel surface by electrochemical reactions. The corrosion of carbon steel might be retarded by this protective film, and the anticorrosion performance of carbon steel in 55% LiBr solution might be improved by enhanced��Mo inhibitor.
|
Received: 01 January 1900
|
|
|
|
[1] |
Qi-long Yong,,*,Zheng-yan Zhang,Xin-jun Sun,Jian-chun Cao,Zhao-dong Li. Effect of dissolved niobium on eutectoid transformation behavior[J]. Chinese Journal of Iron and Steel, 2017, 24(9): 973-980. |
[2] |
Zi-long Zhao,,Xue-gang Xing,Yi Luo,Yi-de Wang,,Wei Liang,*. Influence of Al-Si additions on mechanical properties and corrosion resistance of Mg-8Li dual-phase alloys[J]. Chinese Journal of Iron and Steel, 2017, 24(4): 426-429. |
[3] |
Wen-juan Ge,Xu-ting Li,Peng Li,Peng-chao Qiao,Jian-wei Du,Shuai Xu,Yan Wang*. Microstructures and properties of CuZrAl and CuZrAlTi medium entropy alloys prepared by mechanical alloying and spark plasma sintering[J]. Chinese Journal of Iron and Steel, 2017, 24(4): 448-454. |
[4] |
Qiang Yu,,Chao-fang Dong,*,Jian-xiong Liang,Zhen-bao Liu,Kui Xiao,Xiao-gang Li. Stress corrosion cracking behavior of PH13-8Mo stainless steel in Cl- solutions[J]. Chinese Journal of Iron and Steel, 2017, 24(3): 282-289. |
[5] |
Xun-fu Wang,,Qi-jie Zhai. Corrosion mechanism research and microstructure analysis of Baosteel No��3 blast furnace hearth[J]. Chinese Journal of Iron and Steel, 2017, 24(10): 1016-1022. |
[6] |
Zhi-feng Li,Yong-quan He,Guang-ming Cao,Jun-jian Tang,Xiang-jun Zhang,Zhen-yu Liu. Effects of Al contents on microstructure and properties of hot-dip Zn-Al alloy coatings on hydrogen reduced hot-rolled steel without acid pickling[J]. Chinese Journal of Iron and Steel, 2017, 24(10): 1032-1040. |
|
|
|
|