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Formation mechanism of a self-sealing pore micro-arc oxidation film on AM60 magnesium alloy
K. H.; Song Dong, Y. W.; Shan, D. Y.; Han, E. H.
2015
Source PublicationSurface & Coatings Technology
ISSN0257-8972
Volume266Pages:188-196
AbstractCeramic films are formed on AM60 magnesium alloy by micro-arc oxidation (MAO) using a new fluorotitanate electrolyte system. Compared to the films obtained with traditional electrolytes, the film has the characteristics of self-sealing pores and different chemical compositions. To investigate the film's growth mechanism, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS) were used to characterize the phase structure and chemical composition. Mott-Schottky (M-S) curve measurements were used to study the electrical properties of the passive layer and the influence of the fluorine during initial film deposition. The NaF content in the new electrolyte plays an important role in improving the compactness of the initial film. By increasing oxidation voltages in the MAO process, an increase of titanium oxides in the film is produced. Different melting points of film constituents and high titanium oxide content in the MAO film are key factors for forming self-sealing pores. (C) 2015 Elsevier B.V. All rights reserved.
description.department[dong, kaihui ; song, yingwei ; shan, dayong ; han, en-hou] chinese acad sci, inst met res, key lab nucl mat & safety assessment, shenyang 110016, peoples r china. ; song, yw (reprint author), chinese acad sci, inst met res, key lab nucl mat & safety assessment, shenyang 110016, peoples r china. ; ywsong@imr.ac.cn
KeywordFormation Mechanism Magnesium Alloy Micro-arc Oxidation Self-sealing Pore Fluorotitanate Electrolyte Plasma Electrolytic Oxidation Mg-xzn Alloys Corrosion Behavior Ceramic Coatings Zirconium-oxides Aluminum Resistance Growth Az91d Mao
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73787
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
K. H.,Song Dong, Y. W.,Shan, D. Y.,et al. Formation mechanism of a self-sealing pore micro-arc oxidation film on AM60 magnesium alloy[J]. Surface & Coatings Technology,2015,266:188-196.
APA K. H.,Song Dong, Y. W.,Shan, D. Y.,&Han, E. H..(2015).Formation mechanism of a self-sealing pore micro-arc oxidation film on AM60 magnesium alloy.Surface & Coatings Technology,266,188-196.
MLA K. H.,et al."Formation mechanism of a self-sealing pore micro-arc oxidation film on AM60 magnesium alloy".Surface & Coatings Technology 266(2015):188-196.
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