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Coatings 2018, 8(9), 313; https://doi.org/10.3390/coatings8090313

Microstructure and Corrosion Characterization of Cr Film on Carburized CSS-42L Aerospace Bearing Steel by Filtered Cathodic Vacuum Arc Deposition

1
School of Materials Science and Engineering, Beihang University, Beijing 100191, China
2
School of Energy and Power Engineering, Beihang University, Beijing 100191, China
*
Authors to whom correspondence should be addressed.
Received: 18 July 2018 / Revised: 11 August 2018 / Accepted: 3 September 2018 / Published: 6 September 2018
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Abstract

For present and future advanced aerospace bearing applications, it is significant and necessary to improve the corrosion resistance of carburized CSS-42L steel. In this study, Cr films of about 1 μm in thickness were fabricated onto carburized CSS-42L bearing steel using a filtered cathodic vacuum arc deposition system. The corrosion behavior of carburized CSS-42L steel with Cr films was investigated. The Cr film was composed of nanocrystalline α–Cr. The electrochemical experimental results indicated that the current density had two orders of magnitude decrease and the corrosion potential evidently increased after Cr film deposition. The protective efficiency of this Cr film was as high as 99.7%. Nanocrystalline exhibits a higher corrosion resistance and enhances the modification effect of Cr film on carburized CSS-42L steel. View Full-Text
Keywords: CSS-42L bearing steel; filtered cathodic vacuum arc; nanocrystalline Cr film; corrosion behavior CSS-42L bearing steel; filtered cathodic vacuum arc; nanocrystalline Cr film; corrosion behavior
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Wang, F.; Li, Q.; Zheng, L.; Zhang, F.; Zhang, H. Microstructure and Corrosion Characterization of Cr Film on Carburized CSS-42L Aerospace Bearing Steel by Filtered Cathodic Vacuum Arc Deposition. Coatings 2018, 8, 313.

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