| ZHAO Xia,LIANG Wei-zhong,XU JIA-wen,MA Li-hua.The Preparation and the Micro-structure of the Ceramic Coating of HAD and Microarc Oxidation[J],37(2):16-17,36 |
| The Preparation and the Micro-structure of the Ceramic Coating of HAD and Microarc Oxidation |
| Received:November 19, 2007 Revised:April 10, 2008 |
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| DOI： |
| KeyWord:Ductile iron Hot-dipped aluminum ( HDA) Micro-arc oxidation |
| Author | Institution |
| ZHAO Xia |
School of Materials Science and Enginerring, Heilongjiang University of Science and Technology, Harbin , China |
| LIANG Wei-zhong |
School of Materials Science and Enginerring, Heilongjiang University of Science and Technology, Harbin , China |
| XU JIA-wen |
School of Materials Science and Enginerring, Heilongjiang University of Science and Technology, Harbin , China |
| MA Li-hua |
School of Materials Science and Enginerring, Heilongjiang University of Science and Technology, Harbin , China |
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| Abstract: |
| The ceramic coating was obtained by hot-dipped aluminum ( HDA) and micro-arc oxidation on the ductile iron. The coatings were investigated by SEM and X-ray diffraction. The results show that the thickness of the coatings increases with the increment of the temperature of hot-dip till the peak value. The thickness of the coatings increases with the time expanding of hot-dip. The coatings obtained by hot-dipped aluminum and micro arc oxidation are composed of ceramic layer, pure aluminum layer and diffusion layer, base from the surface to the base. The ceramic layer is mainly composed of Al203. The diffusion layer is composed of FeAl3 , Fe2A15. |
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