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Research on the Combined Properties of Fe/Al2O3 Graded Coatings |
LIU Jianfei, WANG Zhi, DING Yinsen |
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Cite this article:
LIU Jianfei WANG Zhi DING Yinsen. Research on the Combined Properties of Fe/Al2O3 Graded Coatings. Chin J Mater Res, 2010, 24(4): 401-405.
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Abstract Fe/Al2O3 graded coatings on steel substrate was prepared by spraying and sol-gel, while the mixed powders FeAl and FeAlNi were used as two different transitional layers, and the combined properties of the coatings were analyzed. The results show that the adhesive strength of Fe/Al2O3 graded coatings with the FeAl and FeAlNi transitional layers reach the highest, 21.2 MPa and 25.3 MPa, respectively, when the sintering temperature is 1220℃ . Two kind of coating composed respectively of α–Al2O3, AlFeO3, Al2Fe2O6, Al3Fe5O12 and α–Al2O3, AlFeO3, NiFe2O4. It can be seen that the Fe/Al2O3 graded coatings with FeAlNi transitional layer are much denser than the coatings with FeAl transitional layer, and there is not obvious hole and macroscopic interface, while some organization , which similar to the branch appeared in the coatings, increase the combined properties of Fe/Al2O3 graded coatings.
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Received: 19 April 2010
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Fund: Supported by Nature Science Foundation of Shandong province No.Y2006F53 and Dr. Foundation of the University of Jinan No.B0514. |
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