Formation and Structure of Composite Coating of HAD and Micro-Plasma Oxidation on A3 Steel

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	Formation and Structure of Composite Coating of HAD and Micro-Plasma Oxidation on A3 Steel
	Xia Y(夏原); Guan YJ(关永军); Chen L; Chen L; Chen L; Chen L; Chen L; Chen L; Chen L; Chen L
	2004-10-29
会议名称	4th International Conference on Surface Engineering,2004
通讯作者	夏原
中文摘要	Composite coatings were obtained on A3 steel by hot dipping aluminum(HAD) at 720 degreesC for 6 min and micro-plasma oxidation (MPO) in alkali electrolyte. The surface morphology, element distribution and interface structure of composite coatings were studied by means of XRD, SEM and EDS. The results show that the composite coatings obtained through HAD/MPO on A3 steel consist of four layers. From the surface to the substrate, the layer is loose Al2O3 ceramic, compact Al2O3 ceramic, At and FeAl intermetallic compound layer in turn. The adhesions among all the layers are strengthened because the ceramic layer formed at the At surface originally, FeAl intermetallic compound layer and substrate are combined in metallurgical form through mutual diffusion during HAD process. Initial experiment results disclose that the anti-corrosion performance and wear resistance of composite coating are obviously improved through HAD/MPO treatment.
会议录	Transactions of Nonferrous Metals Society of China 2004,14(s2):310-314
学科主题	力学
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/13774]
专题	力学研究所_力学所知识产出(1956-2008)
通讯作者	Xia Y(夏原)
推荐引用方式 GB/T 7714	Xia Y,Guan YJ,Chen L,et al. Formation and Structure of Composite Coating of HAD and Micro-Plasma Oxidation on A3 Steel[C]. 见:4th International Conference on Surface Engineering,2004.