High-strength hierarchical-structured bulk nanoporous Cu prepared by dealloying and spark plasma sintering

doi:10.1016/j.scriptamat.2021.114114

IMR OpenIR

	High-strength hierarchical-structured bulk nanoporous Cu prepared by dealloying and spark plasma sintering
	Wang, Li 1,2; Xie, Hui 1; Shao, Jun-Chao 1; Yang, Hang 3; Feng, Pei-Zhong 3; Jin, Hai-Jun 1
通讯作者	Jin, Hai-Jun(hjjin@imr.ac.cn)
	2021-10-01
发表期刊	SCRIPTA MATERIALIA
ISSN	1359-6462
卷号	203 页码:5
摘要	The applications of dealloyed nanoporous metals are usually hindered by their slow rate of synthesis, the limited sample dimensions, and the poor mechanical stability due to the presence of native cracks. We report that these obstacles can be overcome by combining dealloying with spark plasma sintering. Centimeter-sized nanoporous Cu samples were prepared by spark plasma sintering of dealloyed nanoporous Cu particles. The obtained bulk nanoporous Cu samples are free of major cracks, and exhibit hierarchical porous structures with structure size of-250 nm at lower level of hierarchy and relative density varying between 0.29-0.57. Because of the "size effect" on ligament strength and the elimination of native cracks, these nanoporous Cu samples are stronger than monolithic nanoporous Cu (with cracks) and microporous Cu of similar density. We anticipate that this approach will improve the performance and broaden the application of nanoporous metals, of which the synthesis rate, sample dimensions and microstructure are no longer dependent entirely on dealloying procedure. (c) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
关键词	Porous materials Nanoporous copper Dealloying Spark plasma sintering Mechanical properties
资助者	National Key R&D Program of China ; National Natural Science Foundation of China
DOI	10.1016/j.scriptamat.2021.114114
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2017YFA0204401] ; National Natural Science Foundation of China[51971218] ; National Natural Science Foundation of China[52020105011]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000687338200008
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：14[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/321006/166870
专题	中国科学院金属研究所
通讯作者	Jin, Hai-Jun
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.China Univ Min & Technol, Sch Mat Sci & Engn, Xuzhou 221116, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Li,Xie, Hui,Shao, Jun-Chao,et al. High-strength hierarchical-structured bulk nanoporous Cu prepared by dealloying and spark plasma sintering[J]. SCRIPTA MATERIALIA,2021,203:5.
APA	Wang, Li,Xie, Hui,Shao, Jun-Chao,Yang, Hang,Feng, Pei-Zhong,&Jin, Hai-Jun.(2021).High-strength hierarchical-structured bulk nanoporous Cu prepared by dealloying and spark plasma sintering.SCRIPTA MATERIALIA,203,5.
MLA	Wang, Li,et al."High-strength hierarchical-structured bulk nanoporous Cu prepared by dealloying and spark plasma sintering".SCRIPTA MATERIALIA 203(2021):5.