The Mechanism of Electrochemical Testing Method under Synergistic Effect of NaCl and Water Vapor at 600℃

Authors

Li LIU, State Key Laboratory for Corrosion and Protection,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;
Ying LI, State Key Laboratory for Corrosion and Protection,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;
Fu-hui WANG, State Key Laboratory for Corrosion and Protection,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;

Abstract

The existence of electrochemical reaction during the corrosion process of pure Fe under a deposit of solid NaCl in water vapor at above 400 ℃ had been detected by measuring the corrosion current using double-layer electrode.In EIS measurement,only one capacitive loop was obtained on the pure metals and this gave the information of oxide layer on them.The electrochemical impedance spectroscopy(EIS) and scanning-electron microscopy(SEM) results testified that there is a good relationship between the resistance of oxide layer Rox and the corresion reaction rate for pure metals with different oxidation times.The electrochemical technique is an effective method for studying corrosion performance at high temperature.

Keywords

water vapor, synergistic effect, EIS, oxidation

DOI Link

https://doi.org/10.61558/2993-074X.1975

Publication Date

2009-05-28

Online Available Date

2009-05-28

Revised Date

2009-05-28

Received Date

2009-05-28

Recommended Citation

Li LIU, Ying LI, Fu-hui WANG. The Mechanism of Electrochemical Testing Method under Synergistic Effect of NaCl and Water Vapor at 600℃[J]. Journal of Electrochemistry, 2009 , 15(2): 179-183.
DOI: 10.61558/2993-074X.1975
Available at: https://jelectrochem.xmu.edu.cn/journal/vol15/iss2/10