Interfacial morphology and corrosion resistance of Fe–B cast steel containing chromium and nickel in liquid zinc |
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| Authors: | Shengqiang Ma Jiandong Xing Hanguang Fu Dawei Yi Jianjun Zhang Yefei Li Zhiyun Zhang Baojian Zhu Shengchao Ma |
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| Affiliation: | aState Key Laboratory for Material Behaviour of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi Province 710049, PR China;bResearch Institute of Advanced Materials Processing Technology, School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, PR China;cSchool of Mechanical and Engineering, Chang’an University, Shaanxi Province 710064, PR China |
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| Abstract: | The interfacial morphology and corrosion resistance of low carbon Fe–B cast steels in zinc bath at 520 °C were investigated. The results show Fe–B cast steel containing high Cr and Ni exhibits the best corrosion resistance to liquid zinc. The corrosion layers are composed of Γ-Fe3Zn10, δ-FeZn10, ξ-FeZn13 and η-Zn. The corrosion behaviour of Fe–B cast steels includes the following processes: the preferential leach and dissolution of Cr and Ni, the formation of Fe–Zn compounds controlled by zinc atom diffusion, and the spalling of borides without the supporting role of α-(Fe, Cr) matrix corroded by liquid zinc. |
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| Keywords: | A Steel A Liquid metal B Diffusion C Corrosion C Interfaces |
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