Effect of High Concentration Lithium Bromide Solution on Electrochemical Behavior of Low Alloy Steel at High Temperature

Authors

Jian-wei GUO, School of Chemical Engineering, Dalian Unversity of Technology, Dalian 116012, China
Cheng-hao LIANG, School of Chemical Engineering, Dalian Unversity of Technology, Dalian 116012, China

Corresponding Author

Cheng-hao LIANG

Abstract

By electrochemical measurements and weight loss experiments, the effect of MoO₄^2- on low alloy steel's electrochemical behaviors was investigated at high temperature in 55%LiBr+0.07 mol/L LiOH solution. The results showed that MoO₄^2-, as an anodic inhibitor, formed passive film rapidly and impeded both anodic and cathodic procedures. Moreover, Na₂MoO₄ prevented corrosion effectively in 55%LiBr+0.07 mol/L LiOH solution when its concentration is more than 200 mg/L. The pitting potential increased accompanying to the arising of Na₂MoO₄ concentration. Some elements of alloy strengthened resistance to corrosion, shch as chromium and nickel, but aluminum promoted corrosion. Molybdenum participated in forming protecion film. The harmonizing effect between chromium and molybdenum induced steel A to be in passive state in lower Na₂MoO₄ concentration.

Keywords

Lithium Bromide, Low alloy steel, Electrochemical behavior

DOI Link

https://doi.org/10.61558/2993-074X.2730

Publication Date

2000-11-28

Online Available Date

2000-11-28

Revised Date

2000-04-04

Received Date

2000-01-17

Recommended Citation

Jian-wei GUO, Cheng-hao LIANG. Effect of High Concentration Lithium Bromide Solution on Electrochemical Behavior of Low Alloy Steel at High Temperature[J]. Journal of Electrochemistry, 2000 , 6(4): 451-457.
DOI: 10.61558/2993-074X.2730
Available at: https://jelectrochem.xmu.edu.cn/journal/vol6/iss4/12