PREPARATION OF GRAYISH BLACK FILM ON AM50 MAGNESIUM ALLOY BY CHEMICAL CONVERSION–MICRO-ARC OXIDATION
Zhongcai Shao,
Feifei Zhang,
Qingfang Zhang,
Li Yang and
Xiaoyi Shen
Additional contact information
Zhongcai Shao: School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P. R. China
Feifei Zhang: School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P. R. China
Qingfang Zhang: School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P. R. China
Li Yang: School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P. R. China
Xiaoyi Shen: #x2020;School of Metallurgy, Northeastern University, Shenyang 110004, P. R. China
Surface Review and Letters (SRL), 2017, vol. 24, issue 01, 1-8
Abstract:
The grayish black film was prepared on AM50 magnesium alloy with a new method which combined chemical conversion with micro-arc oxidation (MAO). The optimum formula of chemical conversion was obtained by L9(34) orthogonal test. Meanwhile, the morphology, structure, composition and corrosion resistance of films were analyzed by scanning electron microscopy (SEM), energy spectrum analysis (energy dispersive X-ray spectroscopy (EDS)), X-ray diffraction (XRD), electrochemical tests and CuSO4 drip experiment. The results indicated that Mo element was introduced into the MAO film by chemical conversion pretreatment. The surface of composite film was smooth and compact. The main phase composition of the composite film were SiO2, Mo9O26, MgSiO3, Mg2SiO4 and Mo9O26 was identified to be responsible for giving color to the film. The corrosion resistance of the grayish black film was improved obviously.
Keywords: Magnesium alloy; grayish black film; chemical conversion; micro-arc oxidation (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations:
Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X17500123
Access to full text is restricted to subscribers
Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
HTML/Text
Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:24:y:2017:i:01:n:s0218625x17500123
Ordering information: This journal article can be ordered from
DOI: 10.1142/S0218625X17500123
Access Statistics for this article
Surface Review and Letters (SRL) is currently edited by S Y Tong
More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().