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Volume 7
Issue 10
10.3390/met7100435
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Article

Microscopic Analysis and Electrochemical Behavior of Fe-Based Coating Produced by Laser Cladding

by
Jinlin Chen
1,
Yajun Zhou
1,*,
Chen Shi
1,2 and
Daheng Mao
1
1
College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
2
National Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China
*
Author to whom correspondence should be addressed.
Metals 2017, 7(10), 435; https://doi.org/10.3390/met7100435
Submission received: 16 September 2017 / Revised: 11 October 2017 / Accepted: 13 October 2017 / Published: 18 October 2017
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Abstract

The effect of laser cladding on the surface microstructure and corrosion properties of coated/uncoated specimens were investigated. Fe-based alloy coating was produced on 35CrMo steel by laser cladding. The phase composition, microstructure, interface element distribution, microhardness and corrosion resistance of the cladding coating were measured. The results show that the cladding layer is mainly composed of α-Fe phases, the microstructure presents a gradient distribution, and a good metallurgical bond is formed at the boundary with the substrate. Microhardness profiles show that the average microhardness of the cladding coating is about 2.1 times higher than that of the uncoated specimen. In addition, the electrochemical results show that the coated specimen exhibits far better corrosion resistance than to the uncoated specimen.
Keywords: microstructure; corrosion resistance; coating; laser cladding; 35CrMo steel microstructure; corrosion resistance; coating; laser cladding; 35CrMo steel

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MDPI and ACS Style

Chen, J.; Zhou, Y.; Shi, C.; Mao, D. Microscopic Analysis and Electrochemical Behavior of Fe-Based Coating Produced by Laser Cladding. Metals 2017, 7, 435. https://doi.org/10.3390/met7100435

AMA Style

Chen J, Zhou Y, Shi C, Mao D. Microscopic Analysis and Electrochemical Behavior of Fe-Based Coating Produced by Laser Cladding. Metals. 2017; 7(10):435. https://doi.org/10.3390/met7100435

Chicago/Turabian Style

Chen, Jinlin, Yajun Zhou, Chen Shi, and Daheng Mao. 2017. "Microscopic Analysis and Electrochemical Behavior of Fe-Based Coating Produced by Laser Cladding" Metals 7, no. 10: 435. https://doi.org/10.3390/met7100435

APA Style

Chen, J., Zhou, Y., Shi, C., & Mao, D. (2017). Microscopic Analysis and Electrochemical Behavior of Fe-Based Coating Produced by Laser Cladding. Metals, 7(10), 435. https://doi.org/10.3390/met7100435

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