| ZENG Zhao-jun.MCrAIY +A1203 Cermet Coatings Obtaintd by Detonation Gun Spraying[J],36(5):56-58 |
| MCrAIY +A1203 Cermet Coatings Obtaintd by Detonation Gun Spraying |
| Received:February 13, 2007 Revised:October 10, 2007 |
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| KeyWord:McrAIY D-gun spraying High-temperature coatings Microstructure Cermet coating |
| Author | Institution |
| ZENG Zhao-jun |
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| Abstract: |
| In order to improve the high temperature oxidation resistance of the super-alloy, the MCrAIY + Al2 03 was deposited on K403 by detonation gun spraying. The effect of different protecting gas on the microstructure and hardness of the coatings was studied. The microstructure and property of the coatings were studied by the means of scanning electron microscopy ( SEM) and accelerometer; The bonding strength and the oxidation resistance at high temperature were also studied. The results show that the MCrAIY coatings with the N2 protecting gas has higher density, less porosity and good hardness. The bonding strength is 95Mpa, and the MCrAIY coatings has good oxidation resistance at high temperature . |
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