爆炸喷涂制备流体机械抗冲蚀涂层的性能

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Abstract The WC-12Co coating was prepared by CCDS2000 explosive spraying technology on the stainless steel 0Cr13Ni5Mo, which is commonly used in fluid machinery such as pumps and turbines. The microstructure, micro hardness, porosity, bonding strength and erosion resistance of the coating were characterized and analyzed by optical microscopy, hardness tester, SEM, XRD, tensile testing machine and slurry erosion wear testing machine, and the erosion mechanism of the coating was also analyzed. The results show that the porosity of the WC-12Co coating is 0.63%, the micro hardness is 1 305.6 HV_0.2 and the bonding strength is 130 MPa. Additionally, the coating erosion resistance is 4.678 times than that of ZG0Cr13Ni5Mo stainless steel. The internal crack of the coating mainly expands along the transgranular fracture and crystal fracture. Therefore, the use of explosive spray to prepare WC-12Co coating has broad application prospects in fluid mechanical parts with high sediment flow.

Key words： explosive spraying fluid machinery bonding strength erosion transgranular fracture crystalline fracture

Received: 03 August 2018 Published: 12 July 2019

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	FU Li
	CHEN Xiaoming
	MA Honghai
	LIU Wei
	MENG Jinbo

Cite this article:

FU Li,CHEN Xiaoming,MA Honghai, et al. Performance of anti-erosion coating sprayed by explosive spraying on fluid machinery[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(1): 75-79.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2019/V24/I1/75

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