Abstract
Different contents of S, Cu, Ge and Bi were added respectively to a Zr–1Nb alloy to prepare Zr–1Nb–xM alloys. The corrosion behavior of Zr–1Nb–xS(x = 0–61, μg/g), Zr–1Nb–xCu(x = 0–0.50, wt%), Zr–1Nb–xGe(x = 0–0.20, wt%) and Zr–1Nb–xBi(x = 0–0.30, wt%) was investigated in deionized water at 360 °C/18.6 MPa, in superheated steam at 400 °C/10.3 MPa or at 500 °C/10.3 MPa. Results show that the corrosion resistance of Zr–1Nb alloy is all improved by adding suitable contents of S, Cu, Ge or Bi in different corrosion conditions. The maximum contents of M dissolved in α-Zr of Zr–1Nb–xM alloys are not less than 61 μg/g for S, about 0.20 % for Cu, 0.05–0.10 % for Ge and not less than 0.30 % for Bi. Combined the corrosion results with the microstructures of the alloys, it can be concluded that the S, Cu, Ge and Bi dissolved in α-Zr matrix play an important role in improving the corrosion resistance of Zr–1Nb alloy.
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Acknowledgments
The authors would like to express their thanks to Mr. Yuliang Chu, Weijun Yu, Jianchao Peng and Dr. Pengfei Hu of Instrumental Analysis and Research Center of Shanghai University for their assistance in the microstructural analysis. This study is partly supported by National Natural Science Foundation of China (Nos. 51171102 and 50971084).
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Yao, M.Y., Wu, X.T., Huang, J. et al. Study on the Corrosion Resistance of Zr–1Nb–xM (M = S, Cu, Ge, Bi) Alloys. Oxid Met 84, 647–659 (2015). https://doi.org/10.1007/s11085-015-9594-8
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DOI: https://doi.org/10.1007/s11085-015-9594-8