Recent progress in corrosion protection of magnesium alloys by organic coatings

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	Recent progress in corrosion protection of magnesium alloys by organic coatings
	Hu, Rong-Gang ; Zhang, Su ; Bu, Jun-Fu ; Lin, Chang-Jian ; Song, Guang-Ling ; Lin CJ(林昌健)
刊名	http://dx.doi.org/10.1016/j.porgcoat.2011.10.011
	2012
关键词	SCANNING KELVIN PROBE SOL-GEL COATINGS ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY SITU ATR-FTIR IN-SITU FORCE MICROSCOPY LOCALIZED DEGRADATION VIBRATING ELECTRODE ACOUSTIC MICROSCOPY ANODIC-OXIDATION
英文摘要	The excellent properties of magnesium alloys, especially the high strength/weight ratio, make them desirable materials in the automotive industry. However, their high corrosion susceptibility has greatly limited or even prevented their larger scale use for various applications. Organic coating is one of the most effective ways to prevent magnesium alloys from corrosion. In this report, the recent progress of organic coatings on magnesium alloys and techniques for evaluating the performance of organic coatings are reviewed. As a critical layer in a normal coating system, organic coating has great potential to prevent magnesium alloys from corrosion attack. However, some unsolved problems currently limit the application of organic coatings. Firstly, organic coatings usually have poor adhesion if they are applied without an appropriate pre-treatment. Sol-gel coating or plasma polymerization requires the least pre-treatment prior to deposition. However, the corrosion and wear resistance of these coatings have not been documented. Secondly, it is difficult to prepare a uniform, pore-free organic layer. So, it is usually necessary to apply multiple layers of these coatings to provide sufficient/optimum corrosion and wear resistance. Finally, a number of organic coating techniques are still solvent based, which poses an environmental concern. New water-borne and powder coating technologies should be developed. In order to evaluate the performance of organic coatings on magnesium, both electrochemical and non-electrochemical techniques have been developed. Information from different techniques gives insight into the organic coating/magnesium alloy interface in different aspects. Comprehensive knowledge about the interface is indispensible for understanding the degradation of the organic coating and developing new coating strategies. (C) 2011 Elsevier BM. All rights reserved.
语种	英语
出版者	PROG ORG COAT
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/88389]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Hu, Rong-Gang,Zhang, Su,Bu, Jun-Fu,et al. Recent progress in corrosion protection of magnesium alloys by organic coatings[J]. http://dx.doi.org/10.1016/j.porgcoat.2011.10.011,2012.
APA	Hu, Rong-Gang,Zhang, Su,Bu, Jun-Fu,Lin, Chang-Jian,Song, Guang-Ling,&林昌健.(2012).Recent progress in corrosion protection of magnesium alloys by organic coatings.http://dx.doi.org/10.1016/j.porgcoat.2011.10.011.
MLA	Hu, Rong-Gang,et al."Recent progress in corrosion protection of magnesium alloys by organic coatings".http://dx.doi.org/10.1016/j.porgcoat.2011.10.011 (2012).