| MA Zhuang,QU Wen-chao,LI Zhi-chao.Research on Thermal-shock Resistance of Thermo-chemical Reaction Flame Spraying Ceramic Coatings on A291D[J],37(2):52-53,78 |
| Research on Thermal-shock Resistance of Thermo-chemical Reaction Flame Spraying Ceramic Coatings on A291D |
| Received:September 25, 2007 Revised:April 10, 2008 |
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| DOI： |
| KeyWord:A291D magnesium alloy Ceramic coatings Thermo-chemical reaction X-ray diffraction Thermal-shock resistance |
| Author | Institution |
| MA Zhuang |
Department of Material, Liaoning Technical University, Fuxin , China |
| QU Wen-chao |
Department of Material, Liaoning Technical University, Fuxin , China |
| LI Zhi-chao |
Department of Material, Liaoning Technical University, Fuxin , China |
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| Abstract: |
| To broaden the application of magnesium alloy, improve their performance, ceramic coating ( Al2 03 + Ti02 + Si02 + Zn0 + Al) was produced by flame spraying on the surface of magnesium alloy A291D. The magnesium alloy becomes into a new type of composite material with metal performance ( strength and toughness) and ceramic properties ( high-temperature resistance, corrosion resistance and so on) . MgSi04 , MgAl204 and so on were found in the coatings by X-ray analysis. That means in the process of flame spraying accompanied by a thermo-chemical reaction, it happened between the ceramic powder and the matrix, ceramic powder and ceramic powder. A new way of combining was found in the process of thermo-chemical reaction , that was chemical combining. The traditional ways were machinery chimeric and physical combining. The thermal shock test shows that ceramic coatings have good thermal-shock resistance. |
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