Abstract
The corrosion behavior of brass H62 exposed to the atmosphere of Nansha Islands for 21 months was investigated by weight loss, scanning electron microscopy, x-ray diffraction and electrochemical techniques. The results showed that the average corrosion rate of brass H62 exposed for 1 year was approximately 13.47 g m−2 a−1, and the corrosion products were observed to be unevenly distributed, attributed to the dezincification corrosion. In addition to the zinc-containing compounds Zn5(OH)8Cl2·H2O and NaZn4(SO4)Cl(OH)6·6H2O, the copper-containing compounds Cu2O and Cu2Cl(OH)3 were also detected on the front side of the exposed sample, while only the zinc-containing compounds were detected on the back side. Both sides of brass H62 showed a decreasing corrosion rate, but the corrosion product layer on the back side appeared to be more protective for the same exposure time.
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This work was supported by National Natural Science Foundation of China (No. 51671197) and Strategic Priority Research Program of Chinese Academy of Sciences XDA (No. 13040502).
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Lu, X., Liu, Y., Zhao, H. et al. Corrosion Behavior of Brass H62 in Harsh Marine Atmosphere in Nansha Islands, China. J. of Materi Eng and Perform 29, 8156–8164 (2020). https://doi.org/10.1007/s11665-020-05287-7
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DOI: https://doi.org/10.1007/s11665-020-05287-7