Chao-ping Jiang, Ya-zhe Xing, Feng-ying Zhang, and Jian-min Hao, Microstructure and corrosion resistance of Fe/Mo composite amorphous coatings prepared by air plasma spraying, Int. J. Miner. Metall. Mater., 19(2012), No. 7, pp. 657-662. https://doi.org/10.1007/s12613-012-0609-z
Cite this article as:
Chao-ping Jiang, Ya-zhe Xing, Feng-ying Zhang, and Jian-min Hao, Microstructure and corrosion resistance of Fe/Mo composite amorphous coatings prepared by air plasma spraying, Int. J. Miner. Metall. Mater., 19(2012), No. 7, pp. 657-662. https://doi.org/10.1007/s12613-012-0609-z
Chao-ping Jiang, Ya-zhe Xing, Feng-ying Zhang, and Jian-min Hao, Microstructure and corrosion resistance of Fe/Mo composite amorphous coatings prepared by air plasma spraying, Int. J. Miner. Metall. Mater., 19(2012), No. 7, pp. 657-662. https://doi.org/10.1007/s12613-012-0609-z
Citation:
Chao-ping Jiang, Ya-zhe Xing, Feng-ying Zhang, and Jian-min Hao, Microstructure and corrosion resistance of Fe/Mo composite amorphous coatings prepared by air plasma spraying, Int. J. Miner. Metall. Mater., 19(2012), No. 7, pp. 657-662. https://doi.org/10.1007/s12613-012-0609-z
Engineering Research Center of Transportation Materials (Ministry of Education), School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
Fe/Mo composite coatings were prepared by air plasma spraying (APS) using Fe-based and Mo-based amorphous and nanocrystalline mixed powders. Microstructural studies show that the composite coatings present a layered structure with low porosity due to adding the self-bonded Mo-based alloy. Corrosion behaviors of the composite coatings, the Fe-based coatings and the Mo-based coatings were investigated by electrochemical measurements and salt spray tests. Electrochemical results show that the composite coatings exhibit a lower polarization current density and higher corrosion potentials than the Fe-based coating when tested in 3.5wt% NaCl solutions, indicating superior corrosion resistance compared with the Fe-based coating. Also with the increase in addition of the Mo-based alloy, a raised corrosion resistance, inferred by an increase in corrosion potential and a decrease in polarization current density, can be found. The results of salt spray tests again show that the corrosion resistance is enhanced by adding the Mo-based alloy, which helps to reduce the porosity of the composite coatings and enhance the stability of the passive films.
Engineering Research Center of Transportation Materials (Ministry of Education), School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
Fe/Mo composite coatings were prepared by air plasma spraying (APS) using Fe-based and Mo-based amorphous and nanocrystalline mixed powders. Microstructural studies show that the composite coatings present a layered structure with low porosity due to adding the self-bonded Mo-based alloy. Corrosion behaviors of the composite coatings, the Fe-based coatings and the Mo-based coatings were investigated by electrochemical measurements and salt spray tests. Electrochemical results show that the composite coatings exhibit a lower polarization current density and higher corrosion potentials than the Fe-based coating when tested in 3.5wt% NaCl solutions, indicating superior corrosion resistance compared with the Fe-based coating. Also with the increase in addition of the Mo-based alloy, a raised corrosion resistance, inferred by an increase in corrosion potential and a decrease in polarization current density, can be found. The results of salt spray tests again show that the corrosion resistance is enhanced by adding the Mo-based alloy, which helps to reduce the porosity of the composite coatings and enhance the stability of the passive films.
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