Journal
CORROSION SCIENCE
Volume 125, Issue -, Pages 20-28Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2017.05.024
Keywords
Steel; Aluminium; SEM; Weight loss; Interfaces
Funding
- General Program of Natural Science Foundation of Hainan [517076]
- Scientific Research Foundation of Hainan University [hyqd1629]
- Opening Project of Guangdong Key Laboratory for Advanced Metallic Materials Processing (South China University of Technology) [GJ201609]
- National Natural Science Foundation of China [51605124, 51404084]
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The corrosion resistance and interfacial morphologies of novel Fe-Cr-Mo-B cast steels in molten aluminum have been studied. The result indicates that borides, especial the primary Cr-rich Fe2B, play a key role in improving the corrosion resistance of Fe-Cr-Mo-B cast steels. They are embedded in the intermetallics (corrosion products of the Fe substrate) and act as root to prevent the intermetallics from falling off effectively. The corrosion resistance of Fe-Cr-Mo-B cast steel in molten aluminum is 5 times higher than that of H13.
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