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Study on high temperature oxidation resistance of Al-Si coating on K4104 Superalloy |
;Haitao Liu;; |
哈尔滨工程大学 |
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Abstract The Al-Si coating on the surface of K4104 superalloy were prepared by using slurry process. Two different coating were formed by changing the CrO3 content of agglomerant. According to HB5258-2000, the high temperature performance of these coating have been investigated by high temperature oxidation test.The oxidation kinetics curve was drawn. The surface morphology of the Al-Si coating were studied by using SEM. The results indicate that the Al-Si coating on the surface of K4104 superalloy have transformed to compact oxidized film α-Al2O3 and β-NiAl compound scale in the process of high temperature oxidation and all of them have good adhesivity. The Al-Si coatings have excellent high temperature oxidation resistance.
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Received: 27 June 2005
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Corresponding Authors:
Haitao Liu
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