Ultrahigh impedance of potassium silicate coatings hardened by calcium hydrogen phosphate

doi:10.1016/j.ceramint.2023.09.124

IMR OpenIR

	Ultrahigh impedance of potassium silicate coatings hardened by calcium hydrogen phosphate
	Du, Yao 1,2; Chen, Zheng 1,2; Lu, Yiliang 3; Wang, Cheng 4; Zhu, Shenglong 2; Wang, Fuhui 5
通讯作者	Zhu, Shenglong(slzhu@imr.ac.cn)
	2023-12-01
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	49 期号:23 页码:37946-37956
摘要	The potassium silicate coatings cured by calcium hydrogen phosphate (CHP) at 25, 120 and 200 degrees C were investigated using electrochemical impedance spectroscopy, scanning electron microscope, X-ray diffraction, Raman spectra and Silicon-29 nuclear magnetic resonance spectra. The potassium silicate coating cured by 10 wt% CHP at 120 degrees C exhibited ultrahigh low-frequency impedance, represented by Z(0.01), similar to 61 G Omega cm(2), which is 3 orders of magnitude higher than that of the reference coating which was cured by 15 wt% AlPO4 at 120 degrees C. It is revealed that the impedance is strongly dependent on the amounts of micron-sized defects rather than the polymerization degree. The lower density the defects, including those formed during testing, the higher the impedance. The formation of defects which has a significant impact on the adhesion and anti-corrosion properties of the coating is mainly correlated to the curing kinetics.
关键词	Potassium silicate Impedance Structure EIS NMR Raman
DOI	10.1016/j.ceramint.2023.09.124
收录类别	SCI
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:001098931100001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177430
专题	中国科学院金属研究所
通讯作者	Zhu, Shenglong
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.State Grid Smart Grid Res Inst Co Ltd, State Key Lab Adv Power Transmiss Technol, Beijing, Peoples R China 4.Jiangsu JITRI Rd Engn Technol & Equipment Res Inst, Xuzhou 220005, Peoples R China 5.Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Du, Yao,Chen, Zheng,Lu, Yiliang,et al. Ultrahigh impedance of potassium silicate coatings hardened by calcium hydrogen phosphate[J]. CERAMICS INTERNATIONAL,2023,49(23):37946-37956.
APA	Du, Yao,Chen, Zheng,Lu, Yiliang,Wang, Cheng,Zhu, Shenglong,&Wang, Fuhui.(2023).Ultrahigh impedance of potassium silicate coatings hardened by calcium hydrogen phosphate.CERAMICS INTERNATIONAL,49(23),37946-37956.
MLA	Du, Yao,et al."Ultrahigh impedance of potassium silicate coatings hardened by calcium hydrogen phosphate".CERAMICS INTERNATIONAL 49.23(2023):37946-37956.