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| Microstructure and Wear Properties of Fe-based Amorphous Coatings Deposited by High-velocity Oxygen Fuel Spraying |
| Gang WANG1,Ping XIAO1,Zhong-jia HUANG1,Ru-jie HE2 |
1. Remanufacturing Surface Engineering Technology Research Center, Anhui Polytechnic University, Wuhu 241000,Anhui, China
2. Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China |
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Abstract Fe-based powder with a composition of Fe42��87Cr15��98Mo16��33C15��94B8��88 (at��%) was used to fabricate coatings by high-velocity oxygen fuel spraying. The effects of the spraying parameters on the microstructure and the wear properties of the Fe-based alloy coatings were systematically studied. The results showed that the obtained Fe-based coatings with a thickness of about 400 ��m consisted of a large-volume amorphous phase and some nanocrystals. With increasing the fuel and oxygen flow rates, the porosity of the obtained coatings decreased. The coating deposited under optimized parameters exhibited the lowest porosity of 2��8%. The excellent wear resistance of this coating was attributed to the properties of the amorphous matrix and the presence of nanocrystals homogeneously distributed within the matrix. The wear mechanism of the coatings was discussed on the basis of observations of the worn surfaces.
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Received: 17 July 2015
Published: 01 July 2016
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| Fund:National Natural Science Foundation of China;Key Project of Natural Science of Education Department of Anhui Province |
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2016, Vol. 23 
