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徐丽萍,宋进兵,邓畅光,刘敏,周克崧.铁基非晶增强碳化钨涂层的微观结构与性能[J].稀有金属材料与工程(英文),2020,49(5):1546~1552.[Xu Liping,Song Jinbing,Deng Changguang,Liu Min and Zhou Kesong.Microstructure and properties of WC-based coating reinforced by Fe-based amorphous alloys[J].Rare Metal Materials and Engineering,2020,49(5):1546~1552.]
Microstructure and properties of WC-based coating reinforced by Fe-based amorphous alloys
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Received:December 22, 2018  Revised:April 09, 2019
DOI:
Key words: WC-based  coating, amorphous, HVOF, high  temperature oxidation, wear  resistance, corrosion  resistance
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Xu Liping,Song Jinbing,Deng Changguang,Liu Min and Zhou Kesong  
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Abstract:
      WC-CoCr/ Fe-based amorphous alloy composite coating has been prepared by high velocity oxygen fuel (HVOF) spraying. Microstructure, hardness, wear resistance, high temperature oxidation and corrosion resistance of the composite coating are comparatively studied with WC-CoCr coating. XRD analysis and SEM observation show that the composite coating is mainly composed of WC, W2C and a Fe-based amorphous phase. In comparison with WC-CoCr coating, the hardness of the composite coating is slightly decreased, but there is no statistically significant difference between them. As a result of hardness decrease, the wear resistance of the composite coating is a little bit inferior to that of the WC-CoCr coating. Results of high temperature oxidation at 800 oC proved that the composite coating exhibits excellent thermal stability, which is mainly attributed to the formation of a dense and uniform oxide layer during the high temperature oxidation test. Moreover, electrochemical test revealed that the corrosion resistance of the composite coating is better than that of WC-CoCr coating in 3.5 wt.% NaCl solution.