Knowledge Management System of Institue of Mechanics, CAS
| Formation and Structure of Composite Coating of HAD and Micro-Plasma Oxidation on A3 Steel | |
Yu SX(于升学); Xia Y(夏原) ; Chen L; Guan YJ(关永军); Yao M
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| Source Publication | Transactions of Nonferrous Metals Society of China 2004,14(s2):310-314 |
| 2004-10-29 | |
| Conference Name | 4th International Conference on Surface Engineering,2004 |
| Abstract | 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. |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/13774 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Xia Y(夏原) |
| Recommended Citation GB/T 7714 | Yu SX,Xia Y,Chen L,et al. Formation and Structure of Composite Coating of HAD and Micro-Plasma Oxidation on A3 Steel[C]Transactions of Nonferrous Metals Society of China 2004,14(s2):310-314,2004. |
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