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| Comparison and Analysis of Results of Copper Alloy Laboratory Test and Real Sea Hanging Sheet |
| Received:February 08, 2018 Revised:May 25, 2018 |
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| DOI：10.7643/ issn.1672-9242.2018.05.009 |
| KeyWord:copper alloys linear polarization electrochemical impedance corrosion in seawater microscopic analysis |
| Author | Institution |
| ZHOU Peng-fei |
Foundation Department, Navy University of Engineering, Wuhan , China |
| KONG Xiao-dong |
Foundation Department, Navy University of Engineering, Wuhan , China |
| SU Xiao-hong |
Foundation Department, Navy University of Engineering, Wuhan , China |
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| Abstract: |
| Objective To compare the similarities and differences between results of laboratory simulation and real sea hanging sheet to evaluate the corrosion performance of the two copper alloys. Methods Certain tests such as linear polarization, electrochemical impedance and microstructure analysis were carried out to compare corrosion rate, pitting corrosion tendency, reaction mechanism, corrosion morphology, environment and other external factors of the two kinds of copper alloys in simulated seawater. Results Except Yulin sea area, both the real sea hanging tablets and the laboratory results show that the average corrosion rate of B10 was less than that of H62. The corrosion rate of B10 and H62 were consistent with the increase of temperature; and the average corrosion rate decreased with the increase of immersion time. Conclusion In the practical environment, the temperature is not the main factor which influences the pitting. Microorganisms and other environmental factors have great influence on the pitting. |
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