1. Effects of boron concentration on the corrosion resistance of Fe–B alloys immersed in 460°C molten zinc bath
- Author
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Ma, Shengqiang, Xing, Jiandong, Fu, Hanguang, Yi, Dawei, Zhi, Xiaohui, and Li, Yefei
- Subjects
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IRON alloys , *BORON , *CORROSION & anti-corrosives , *LIQUID metals , *ZINC , *INTERFACES (Physical sciences) , *X-ray spectroscopy - Abstract
Abstract: In order to investigate the effects of boron concentration on the corrosion resistance of Fe–B alloys in molten zinc, Fe–B alloys, with the boron concentrations of 1.5wt.%, 3.5wt.% and 6.0wt.% respectively, were dipped into a pure molten zinc bath at 460°C and kept in different time intervals. The results show that, in comparison with 1Cr18Ni9Ti stainless steel, Fe–B alloy with 3.5wt.%B exhibits excellent corrosion resistance, due to the dense continuous network or parallel Fe2B phase which hinders the Fe/Zn interface reaction in Fe–B alloys. The energy dispersive spectrum (EDS) results indicate that the coarse and compact δ phase with the length about 40μm generates near the matrix of Fe–B alloy and massive ζ phase occurs close to the liquid zinc. The corrosion process includes Fe/Zn reaction and the isolation and fracture of Fe2B. The failure of boride is mainly caused by the microcrack. [Copyright &y& Elsevier]
- Published
- 2010
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