Improving Corrosion Resistance of Ferrous Alloy to Molten Zn by Modifying the Laves Phase Characteristics |
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| Authors: | X. Liu F. C. Yin J. Lou X. M. Ouyang Z. Li |
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| Affiliation: | 1.School of Material Science and Engineering,Xiangtan University,Xiangtan,People’s Republic of China;2.Key Laboratory of Materials Design and Preparation Technology of Hunan Province,Xiangtan University,Xiangtan,People’s Republic of China |
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| Abstract: | The Laves phase morphology in the Fe25Mo14Cr10Ni1Si (wt.%) alloy was modified by Si addition to improve the corrosion resistance of the ferrous alloy to molten zinc. The Si-containing alloy showed a woven, needle-like Laves phase with higher Mo content than that of the Fe25Mo14Cr10Ni alloy. Corrosion resistance to molten Zn for the Si-containing alloy was more than 20 times higher than that of the silicon-free alloy mainly as a result of the characteristics of the modified Laves phase. This phase was oriented perpendicular to the Zn-diffusion direction, which effectively prevented corrosion by the molten Zn, leading to a denser FeZn13 layer rather than the FeZn10 layer produced in the Fe25Mo14Cr10Ni alloy. |
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