硬质颗粒对等离子熔覆碳化钨/多主元合金复合硬面涂层组织与耐磨性能的影响

doi:10.19976/j.cnki.43-1448/TF.2022086

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Abstract Two kinds of hardfacing composite coatings with cast WC particles and sintered WC-Co particles as hard particles and multi principal alloy as bonding phase were prepared by plasma cladding technology. The effects of different hard particles on the microstructure and wear resistance of the hardfacing composite coating were studied by means of X-ray diffraction, scanning electron microscopy and friction experiments. The results show that the volume fraction content of M₆C in FeCrNi/WC-Co composite coating (20.1%) is lower than that in FeCrNi/WC composite coating (28.4%). The sintered WC-Co particles have high thermodynamic stability, and the dissolution of WC is lower than that of cast WC particles, which can effectively reduce the precipitation of brittle M₆C carbides. The wear resistance of FeCrNi/WC-Co composite coating is better than that of FeCrNi/WC coating. FeCrNi/WC-Co coating with less M₆C phases can avoid premature peeling of the coating due to brittle fracture, ensure the integrity of hard phase particles, and improve the wear resistance of the hardfacing coating.

Key words： plasma cladding WC-based hardfacing coating multi-principal components alloy dissolution rate wear resistance

Received: 14 November 2022 Published: 23 March 2023

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TG174.44

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	YANG Zihan
	LIU Yong
	ZHANG Wei
	LIU Bin

Cite this article:

YANG Zihan,LIU Yong,ZHANG Wei, et al. Effects of hard particles on microstructure and wear-resistance of plasma cladding WC/multi-principal components alloy composite hard facing coating[J]. Materials Science and Engineering of Powder Metallurgy, 2023, 28(1): 35-43.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2022086 OR http://pmbjb.csu.edu.cn/EN/Y2023/V28/I1/35

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