The Addition of WC and Graphite Improves Polarization Behavior of Ni-Co-based Alloy Coatings Fabricated by Vacuum Fusion Sintering

doi:10.11896/j.issn.1005-023X.2018.06.013

	The Addition of WC and Graphite Improves Polarization Behavior of Ni-Co-based Alloy Coatings Fabricated by Vacuum Fusion Sintering
	Yang, Guirong 1; Song, Wenming 1,2; Wang, Jianru 1; Zhang, Yufu 1,2; Wang, Fuqiang 1; Ma, Ying 1
刊名	Cailiao Daobao/Materials Review
	2018-03-25
卷号	32 期号:3 页码:924-929
关键词	Binary alloys Composite coatings Corrosion resistance Corrosion resistant coatings Fabrication Graphite Nickel alloys Polarization Sintering Sodium chloride Tungsten carbide Co-based alloy coatings Co-based alloys Corrosion current densities Corrosion potentials Electrochemical behaviors Polarization behavior Polarization curves Vacuum fusion sintering
ISSN号	1005023X
DOI	10.11896/j.issn.1005-023X.2018.06.013
英文摘要	The Ni-Co alloy fusion coating, Ni-Co+WC and Ni-Co+WC+Graphite composite fusion coating were fabricated through the vacuum fusion sintering technique on 45# steel substrate, and the resultant coatings' electrochemical behavior in 3.5% NaCl solution was studied. Our experiment confirmed the higher (at least 4.98% higher) self-corrosion potentials and lower (74.93% lower) corrosion current densities of Ni-Co alloy fusion coatings compared with ZG45 substrate, as well as the monotonic increase of self-corrosion potential with the increasing Co content for the Ni-Co alloy fusion coatings. The addition of WC and graphite (G) causes the rise of self-corrosion potential for Ni-Co alloy fusion coatings. Ni-Co+WC+Graphite composite fusion coating holds the self-corrosion potential superiority of 32.39% and 33.86% to Ni-Co+WC coating and Ni-40%Co coating, respectively, also a corrosion current density 19.37% lower than Ni-Co+WC coating, thereby demonstrating the significantly improved corrosion resistance. Moreover, on the polarization curve of Ni-Co+WC+Graphite sample, the passivation region can be observed, the width of which is larger than that of the Ni-Co+WC composite fusion coating. This indicates that the corrosion resistance of Ni-Co+WC+Graphite coa-ting is more satisfactory. © 2018, Materials Review Magazine. All right reserved.
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114488]
专题	材料科学与工程学院机电工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Lanpec Technologies Limited, Lanzhou; 730070, China
推荐引用方式 GB/T 7714	Yang, Guirong,Song, Wenming,Wang, Jianru,et al. The Addition of WC and Graphite Improves Polarization Behavior of Ni-Co-based Alloy Coatings Fabricated by Vacuum Fusion Sintering[J]. Cailiao Daobao/Materials Review,2018,32(3):924-929.
APA	Yang, Guirong,Song, Wenming,Wang, Jianru,Zhang, Yufu,Wang, Fuqiang,&Ma, Ying.(2018).The Addition of WC and Graphite Improves Polarization Behavior of Ni-Co-based Alloy Coatings Fabricated by Vacuum Fusion Sintering.Cailiao Daobao/Materials Review,32(3),924-929.
MLA	Yang, Guirong,et al."The Addition of WC and Graphite Improves Polarization Behavior of Ni-Co-based Alloy Coatings Fabricated by Vacuum Fusion Sintering".Cailiao Daobao/Materials Review 32.3(2018):924-929.