Microstructure and polarization behavior of Ni/WC+GO (graphene oxide) composite cladding fusion coating

doi:10.1515/ijmr-2020-7765

	Microstructure and polarization behavior of Ni/WC+GO (graphene oxide) composite cladding fusion coating
	Li, Ouyang 1; Yang, Guirong 1; Song, Wenming 3; Gao, Dawen 1; Sun, Xianming 2
刊名	International Journal of Materials Research
	2021-04-01
卷号	112 期号:4 页码:308-320
关键词	Binary alloys Chromium alloys Chromium metallography Cladding (coating) Composite structures Corrosion Energy dispersive spectroscopy Graphene Iron alloys Iron metallography Microstructure Nickel metallography Nickel oxide Polarization Scanning electron microscopy Silicon alloys Solid solutions Ternary alloys Tungsten metallography Carbon structures Corrosion current densities Corrosion potentials Diffusion-affected zone Electrochemical polarization Micro-structural characteristics Orders of magnitude Polarization behavior
ISSN号	1862-5282
DOI	10.1515/ijmr-2020-7765
英文摘要	Ni/WC/graphene oxide (GO) composite cladding fusion coatings were fabricated through the vacuum cladding technique on a medium carbon structure steel (45# steel) substrate whose carbon content was 0.45 ± 0.03%. The microstructural characteristics, phase composition, and electrochemical polarization characteristics of the composite cladding fusion coatings were analyzed with scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and the electrochemical workstation CHI660E. Results show that the microstructure was compact and was micro-crack free, and without inclusions or other defects. It was comprised of four micro-zones, namely, the composite, transition, diffusion fusion, and diffusion-affected zones with thicknesses of approximately 4 mm, 1 mm, 20 μm, and 250 μm, respectively. The main phases of the composite coating were γ-Ni solid solution, WC, Cr7C3, Ni2.9Cr0.7Fe0.36, Cr23C6, Ni3Fe, Ni3Si, Ni3B, W2C, and C. The self-corrosion potential of the composite coatings had increased by 0.3269 V compared with that of the substrate, and the corrosion current density of the composite coatings had decreased by nearly two orders of magnitude. The Ni-based solid solution region with relatively high C and Cr contents was difficult to dissolve. © 2021 Walter de Gruyter GmbH, Berlin/Boston, Germany 2021.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	Walter de Gruyter GmbH
WOS记录号	WOS:000642341300007
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148379]
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou, China; 2.Wuhan University of Technology, Wuhan, China 3.Lanpec Technologies Limited, Lanzhou, China;
推荐引用方式 GB/T 7714	Li, Ouyang,Yang, Guirong,Song, Wenming,et al. Microstructure and polarization behavior of Ni/WC+GO (graphene oxide) composite cladding fusion coating[J]. International Journal of Materials Research,2021,112(4):308-320.
APA	Li, Ouyang,Yang, Guirong,Song, Wenming,Gao, Dawen,&Sun, Xianming.(2021).Microstructure and polarization behavior of Ni/WC+GO (graphene oxide) composite cladding fusion coating.International Journal of Materials Research,112(4),308-320.
MLA	Li, Ouyang,et al."Microstructure and polarization behavior of Ni/WC+GO (graphene oxide) composite cladding fusion coating".International Journal of Materials Research 112.4(2021):308-320.