Wear and Corrosion Properties of Cold Sprayed 420 Stainless Steel/WC-17Co Coating on Magnesium Alloy

CHEN Jie; SONG Hui; DAI Yu; MA Bing; ZHENG Ziyun; JIA Li

doi:10.11868/j.issn.1005-5053.2017.000161

Journal of Aeronautical Materials (Aug 2018)

Wear and Corrosion Properties of Cold Sprayed 420 Stainless Steel/WC-17Co Coating on Magnesium Alloy

CHEN Jie,
SONG Hui,
DAI Yu,
MA Bing,
ZHENG Ziyun,
JIA Li

Affiliations

CHEN Jie: Institute of Welding and Remanufacturing, Ningbo Branch of Chinese Academy of Ordnance Science, Ningbo 315103, Zhejiang, China
SONG Hui: Institute of Welding and Remanufacturing, Ningbo Branch of Chinese Academy of Ordnance Science, Ningbo 315103, Zhejiang, China
DAI Yu: Institute of Welding and Remanufacturing, Ningbo Branch of Chinese Academy of Ordnance Science, Ningbo 315103, Zhejiang, China
MA Bing: Institute of Welding and Remanufacturing, Ningbo Branch of Chinese Academy of Ordnance Science, Ningbo 315103, Zhejiang, China
ZHENG Ziyun: Institute of Welding and Remanufacturing, Ningbo Branch of Chinese Academy of Ordnance Science, Ningbo 315103, Zhejiang, China
JIA Li: Institute of Welding and Remanufacturing, Ningbo Branch of Chinese Academy of Ordnance Science, Ningbo 315103, Zhejiang, China

DOI: https://doi.org/10.11868/j.issn.1005-5053.2017.000161
Journal volume & issue: Vol. 38, no. 4
pp. 82 – 86

Abstract

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420/WC-17Co coating was deposited on AZ80 magnesium alloy substrate by cold spraying technology. SEM was used to characterize the original powder morphology and coating microstructure. The microhardness and bonding strength of as-sprayed coating were tested by microhardness tester and universal material testing machine. Moreover, friction and wear property of the coating was also investigated by a ball-on-disk tribometer. Corrosion behaviours of coatings and magnesium alloy were characterized by electrochemical measurements. The results show that high quality 420/WC-17Co coating can be deposited on AZ80 magnesium alloy by cold spraying technology. The microhardness of cold sprayed 420/WC-17Co coating is (615 ± 62) HV, bonding strength is (57 ± 11) MPa and wear rate is only 3.3 × 10–6 mm3·N·m. The wear resistance of cold sprayed 420/WC-17Co coating is improved by two orders of magnitude, and the corrosion current density is reduced by one order of magnitude than magnesium alloy substrate. In conclusion, the present research demonstrates that cold sprayed 420/WC-17Co coating can significantly improve the surface performance of magnesium alloy substrate without evident heating output.

Published in Journal of Aeronautical Materials

ISSN: 1005-5053 (Print)
Publisher: Journal of Aeronautical Materials
Country of publisher: China
LCC subjects: Technology: Motor vehicles. Aeronautics. Astronautics
Website: http://jam.biam.ac.cn/indexen.htm

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