Corrosion Resistance of Low Pressure Cold Sprayed Al Coating on Q235 Steel in Seawater

Authors

Xiang-bo LI, State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSRMI), Qingdao 266101, Shandong, China;Follow
Li-kun XU, State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSRMI), Qingdao 266101, Shandong, China;
Shan-guang QIU, State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSRMI), Qingdao 266101, Shandong, China;Ocean University of China, Qingdao 266100, Shandong, China;
jia Wang, Ocean University of China, Qingdao 266100, Shandong, China;
Guo-sheng HUANG, State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSRMI), Qingdao 266101, Shandong, China;
Cai-chang DONG, State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSRMI), Qingdao 266101, Shandong, China;Ocean University of China, Qingdao 266100, Shandong, China;

Corresponding Author

Xiang-bo LI(lixb@sunrui.net)

Abstract

Taking aluminium (Al) powder mixed with 10% (by volume) of Al2O3 powder as raw materials, the Al coating was prepared on the Q235 carbon steel substrate using a portable low pressure cold spraying equipment. Through the measurements of the corrosion potential and potentiodynamic polarization, the electrochemical corrosion behavior of the low pressure cold sprayed Al coating in seawater was studied in comparison with those of the Al coatings deposited with high pressure cold spray and thermal spray processes. At the same time, the surface and cross-section morphologies of these coatings were observed with scanning electron microscope. The results showed that the corrosion resistance of the low-pressure cold spraying Al coating, which is compact, is lower than that of the high pressure cold sprayed Al coating, while much higher than that of the thermally sprayed Al coating.

Graphical Abstract

Keywords

low pressure cold spraying, aluminum coating, thermal spraying, corrosion resistance

DOI Link

https://doi.org/10.61558/2993-074X.2132

Publication Date

2013-10-28

Online Available Date

2013-07-01

Revised Date

2013-07-01

Received Date

2013-01-30

Recommended Citation

Xiang-bo LI, Li-kun XU, Shan-guang QIU, jia Wang, Guo-sheng HUANG, Cai-chang DONG. Corrosion Resistance of Low Pressure Cold Sprayed Al Coating on Q235 Steel in Seawater[J]. Journal of Electrochemistry, 2013 , 19(5): 425-429.
DOI: 10.61558/2993-074X.2132
Available at: https://jelectrochem.xmu.edu.cn/journal/vol19/iss5/5