高频感应熔覆TiN/Co涂层组织及性能研究

doi:10.11896/j.issn.1005-023X.2018.13.018

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Abstract To improve the microhardness and wear resistance of the sucker rod steel, the TiN reinforced Co-based alloy coa-tings were prepared on the surface of 35CrMo steel by high-frequency induction cladding. The composite coatings were metallurgically bonded to the substrate, and the microstructures were compactness and uniformity with few defects such as pores and cracks. The microstructure of the coating layer was investigated by metalloscope, SEM and XRD, and the microhardness distribution of the coa-ting was tested by microhardness tester. The friction coefficient and wear mass loss were also investigated. The results show that the organization is mainly Co solid solution, and hard phases (Cr₂₃C₆,Cr₂B and TiN) were dispersed distribution in Co-based substrate. The 10%TiN+Co cladding layer surface has the highest hardness of 788HV_0.1, and hardness gradient increased from the interface to the surface. Under the same condition, the coating with 10% TiN additions has the least relative wear rate. Its wear resistance and wear quality were reduced by 40% and 45%, compared with the coating without TiN addition. The wear mechanisms of the compo-site coatings were mainly adhesive wear and abrasive wear.

Key words： high-frequency induction cladding Co-based coating TiN microhardness wear resistance

Published: 01 August 2018

CLC number:

TG146.15

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	Articles by authors
	HUANG Bensheng
	GAO Yuxiao
	CHEN Peng
	LI Jie
	LI Guangwen

Cite this article:

HUANG Bensheng,GAO Yuxiao,CHEN Peng, et al. Microstructural and Mechanical Properties of Co-based Coating by High-frequency Induction Cladding[J]. Materials Reports, 2018, 32(13): 2272-2277.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.13.018 OR http://www.mater-rep.com/EN/Y2018/V32/I13/2272

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