The Research on Anticorrosion and Abrasion Behavior in Corrosive Medium of Micro-Arc Oxidation Film on Magnesium Alloy

Abstract:

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In the sodium silicate electrolyte system, the uniform ceramic films formed on AZ91D magnesium alloys were obtained by the pulse power when the current density is 40mA/cm2. The morphology, phase composition, anticorrosion and abrasion resistance behaviors in corrosive medium were studied scanning electron microscopy (SEM). The results show that Micro-arc oxidation film is of double-layer structure (loose layer and compact layer), uniform surface and local cracks. Micro-arc oxidation treatment enhanced the anticorrosion of magnesium alloy. The corrosion potential of micro-arc oxidation film is more increased by 94mV than that of the magnesium alloy substrate. The abrasion of the film will be reduced in corroding medium.

Info:

Periodical:

Key Engineering Materials (Volumes 474-476)

Edited by:

Garry Zhu

Pages:

123-126

DOI:

10.4028/www.scientific.net/KEM.474-476.123

Citation:

B. Y. Lou et al., "The Research on Anticorrosion and Abrasion Behavior in Corrosive Medium of Micro-Arc Oxidation Film on Magnesium Alloy", Key Engineering Materials, Vols. 474-476, pp. 123-126, 2011

Online since:

April 2011

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$35.00

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