Summary on Corrosion Behavior and Micro-arc Oxidation for Magnesium Alloys

doi:10.11902/1005.4537.2014.047

Journal of Chinese Society for Corrosion and protection

2015, Vol. 35

Issue (2): 99-105 DOI: 10.11902/1005.4537.2014.047

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Summary on Corrosion Behavior and Micro-arc Oxidation for Magnesium Alloys

LIU Yin¹(

), LIU Shimei², YU Luping¹, LIU Jun¹, JIANG Wei¹

1. Aerospace Science and Industry Corporation Inertia Technologies Co., Ltd., Beijing 100074, China
2. Beijing Institute of Automatic Control Equipment, Beijing 100074, China

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Abstract

Corrosion phenomena such as galvanic corrosion, pitting, stress corrosion cracking and corrosion fatigue as well as the relevant anti-corrosion measures for magnesium alloys were summarized and analyzed. The micro-arc oxidation (MAO) technology for Mg-alloys was introduced in the aspects of process technique, film structure, corrosion resistance, abrasion resistance, sealing treatment, film inspection and post-repair processing etc., while, the effect of structure and thickness of films on their corrosion resistance was emphasized. The performance of sliding wear, fretting wear and impact wear of the MAO films was also introduced. It is noted that a proper sealing treatment can effectively improved the entire film density, and thereby the corrosion resistance of the MAO films.

Key words: magnesium alloy micro-arc oxidation corrosion resistance frictional wear sealing

Received: 30 March 2014

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TG146.2

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	Yin LIU
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Cite this article:

LIU Yin, LIU Shimei, YU Luping, LIU Jun, JIANG Wei. Summary on Corrosion Behavior and Micro-arc Oxidation for Magnesium Alloys. Journal of Chinese Society for Corrosion and protection, 2015, 35(2): 99-105.

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https://www.jcscp.org/EN/10.11902/1005.4537.2014.047 OR https://www.jcscp.org/EN/Y2015/V35/I2/99

Fig.1 Structure of oxide film formed on magnesium alloy

Fig.2 Surface (a) and sectional morphologies (b) of micro-arc oxidation coating of AZ91D^[31]

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