等离子熔覆Fe-Cr-Nb-Si-Mo涂层的制备及摩擦学性能

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Abstract Three kinds of wear-resistant coatings A1, A2 and A3 were prepared by plasma arc cladding Fe-Cr-Nb-Si-Mo alloy powder coating on the common materials of the monorail crane friction drive wheel WH60A, Weartuf450 and NM450. The composition, friction and wear properties and bonding strength of the three coating phases were tested and analyzed by metallographic microscope, X-ray diffractometer, microhardness tester and hydraulic universal material testing machine. The results show that the main phases of A1, A2 and A3 are martensite and various metal carbides ((Nb,Mo)C,VC,Cr₇C₃), and the Vickers hardness of the surface of WH60A is increased by 790.4 HV_0.1. The hardness of the substrate Weartuf450 and NM450 increased from 467.8, 493.4 HV_0.1to 1 002.1, 983.3 HV_0.1, respectively; the friction coefficient and wear rate of the Weartuf450 surface cladding layer are the largest compared with the other two substrates.

Key words： plasma cladding Fe-Cr-Nb-Si-Mo friction and wear Vickers hardness

Received: 27 March 2019 Published: 14 November 2019

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TG335.86

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	XING Yadong
	GAO Guijun
	LI Xinxin

Cite this article:

XING Yadong,GAO Guijun,LI Xinxin. Preparation and tribological properties of plasma cladding Fe-Cr-Nb-Si-Mo coatings[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(5): 400-405.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2019/V24/I5/400

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