Synthesis and mechanical properties of porous metals with inverted dealloying structure

doi:10.1016/j.scriptamat.2021.114483

CORC > 金属研究所 > 中国科学院金属研究所

	Synthesis and mechanical properties of porous metals with inverted dealloying structure
	Hu, Wen-Kai 1,2; Liu, Ling-Zhi 1; Zou, Lijie 1; Shao, Jun-Chao 1; Wang, Shao-Gang 1; Jin, Hai-Jun 1
刊名	SCRIPTA MATERIALIA
	2022-03-15
卷号	210 页码:7
关键词	Crucibleless liquid metal dealloying Porous metals Inverse replica Mechanical properties Scaling laws
ISSN号	1359-6462
DOI	10.1016/j.scriptamat.2021.114483
通讯作者	Jin, Hai-Jun(hjjin@imr.ac.cn)
英文摘要	Dealloyed porous or nanoporous materials often suffer from impaired strength and stiffness due to the pinch-off or spheroidization of ligaments. Herein a crucibleless liquid metal dealloying (CLMD) procedure was developed to prepare bicontinuous Cu-Cr and Ag-Ni composites consisting of a network-like deal-loying structure (Cr or Ni) and a solidified matrix of liquid-metal corrosion media (Cu or Ag). Chemical dissolution of the backbone phase of dealloying structure leaves behind the porous-structured matrix phases (Cu or Ag), which is in fact the inverse replica of the dealloyed network structure. The relative strength and stiffness of porous Cu and Ag are higher than those with dealloying structure (e.g., porous Fe80Cr20) of similar relative density. Compared with the solid network originally formed in dealloying, the mechanical efficiency of inverted dealloying structure is higher and less sensitive to the above-mentioned topology defects. The ease of CLMD method and the improved mechanical stability of obtained porous materials might enable practical application in many areas. (C)& nbsp;2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
资助项目	National Key R&D Program of China[2017YFA0204401] ; National Natural Science Foundation of China[51971218]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000788243700009
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/172524]
专题	金属研究所_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
推荐引用方式 GB/T 7714	Hu, Wen-Kai,Liu, Ling-Zhi,Zou, Lijie,et al. Synthesis and mechanical properties of porous metals with inverted dealloying structure[J]. SCRIPTA MATERIALIA,2022,210:7.
APA	Hu, Wen-Kai,Liu, Ling-Zhi,Zou, Lijie,Shao, Jun-Chao,Wang, Shao-Gang,&Jin, Hai-Jun.(2022).Synthesis and mechanical properties of porous metals with inverted dealloying structure.SCRIPTA MATERIALIA,210,7.
MLA	Hu, Wen-Kai,et al."Synthesis and mechanical properties of porous metals with inverted dealloying structure".SCRIPTA MATERIALIA 210(2022):7.