Corrosion resistance of inorganic zinc-rich coating reinforced by Ni-coated coal fly ash

doi:10.1016/j.jallcom.2019.01.368

	Corrosion resistance of inorganic zinc-rich coating reinforced by Ni-coated coal fly ash
	Cheng, Lihong 1,2; Luo, Yang 2; Ma, Shuhua 2; Guo, Weihong 1; Wang, Xiaohui 2
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2019-05-25
卷号	786 页码:791-797
关键词	Zinc-rich coating Coal fly ash Anticorrosion Ni
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2019.01.368
英文摘要	To recycle the solid waste coal fly ash (CFA), a new approach of adding Ni-coated coal fly ash (Ni-CFA) to waterborne inorganic zinc-rich coatings (ZRCs) was proposed. The effect of Ni-CFA on the corrosion resistance of ZRCs was investigated systematically using open-circuit potential (OCP) measurements, the DC polarization technique and electrochemical impedance spectroscopy (EIS). The results showed that the addition of 6.6 wt% Ni-CFA noticeably improved the cathodic protection of the coating due to the electrical conductivity of the Ni layer and decreased the corrosion current when providing barrier protection. Meanwhile, the active SiO2 on the surface of CFA was found to increase the degree of cross-linking of the potassium silicate, resulting in better mechanical properties of the coating, as measured using a bending test. Three corrosion stages were observed, with equivalent circuits expressed by R(QR), R(Q(R(QR)))(QR) and R(Q(RW)). (C) 2019 Elsevier B.V. All rights reserved.
WOS关键词	NANOCOMPOSITE COATINGS ; PROTECTION ; PERFORMANCE ; MECHANISM ; STEEL
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000461778600095
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/28188]
专题	中国科学院过程工程研究所
通讯作者	Ma, Shuhua; Guo, Weihong
作者单位	1.East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Preparat & Applicat Ultrafine Mat, Polymer Proc Lab,Minist Educ, Shanghai 200237, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Lihong,Luo, Yang,Ma, Shuhua,et al. Corrosion resistance of inorganic zinc-rich coating reinforced by Ni-coated coal fly ash[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,786:791-797.
APA	Cheng, Lihong,Luo, Yang,Ma, Shuhua,Guo, Weihong,&Wang, Xiaohui.(2019).Corrosion resistance of inorganic zinc-rich coating reinforced by Ni-coated coal fly ash.JOURNAL OF ALLOYS AND COMPOUNDS,786,791-797.
MLA	Cheng, Lihong,et al."Corrosion resistance of inorganic zinc-rich coating reinforced by Ni-coated coal fly ash".JOURNAL OF ALLOYS AND COMPOUNDS 786(2019):791-797.