Regulating the mechanical properties and electrical conductivity of CNTs/Cu composites by tailoring nano-sized TiC on the surface of intact CNTs

doi:10.1016/j.carbon.2021.09.040

	Regulating the mechanical properties and electrical conductivity of CNTs/Cu composites by tailoring nano-sized TiC on the surface of intact CNTs
	Liu, Yang 2; Tao, Jingmei 2; Liu, Yichun 2; Hu, Yong 1,3; Bao, Rui 2; Li, Fengxian 2; Fang, Dong 2; Li, Caiju 2; Yi, Jianhong 2
刊名	CARBON
	2021-11-15
卷号	185 页码:428-441
关键词	Cu matrix composite Carbon nanotubes Interface decoration Mechanical properties Electrical conductivity
ISSN号	0008-6223
DOI	10.1016/j.carbon.2021.09.040
英文摘要	Strengthening effect of carbon nanotubes (CNTs) reinforced metal matrix composites (MMCs) mainly depends on the interfacial bonding strength which has a decisive influence on comprehensive properties of the composites. However, in CNTs reinforced Cu matrix composites, poor interface bonding due to the lack of wettability between CNTs and Cu matrix has become a bottleneck problem restricting the load transfer capacity of CNTs. Different from the conventional thoughts of producing interfacial carbides by in-situ reaction with CNTs which will lead to deterioration of structural integrity of CNTs, a novel strategy is used by forming TiC on the surface of intact CNTs through solid phase reaction between the pre-milled CNTs and the Ti powders. The mechanical properties of the composites can be regulated by tailoring the morphology and amount of TiC decorated at the interface. Strong interfacial bonding achieved due to the specially designed interface structure which contributes to the dramatic improvement of strengthening efficiency of CNTs and benefits the plastic deformation of Cu matrix. Consequently, a simultaneous enhancement of tensile strength (281 MPa) and tensile elongation (20.1%) is achieved in the composite with TiC decorated at the interface, and a super high strengthening efficiency (135.8) is realized. The tactic used in our study can provide a reference for the preparation of other CNTs/MMCs. (c) 2021 Elsevier Ltd. All rights reserved.
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000703891700001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148869]
专题	材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China 2.Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China; 3.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Liu, Yang,Tao, Jingmei,Liu, Yichun,et al. Regulating the mechanical properties and electrical conductivity of CNTs/Cu composites by tailoring nano-sized TiC on the surface of intact CNTs[J]. CARBON,2021,185:428-441.
APA	Liu, Yang.,Tao, Jingmei.,Liu, Yichun.,Hu, Yong.,Bao, Rui.,...&Yi, Jianhong.(2021).Regulating the mechanical properties and electrical conductivity of CNTs/Cu composites by tailoring nano-sized TiC on the surface of intact CNTs.CARBON,185,428-441.
MLA	Liu, Yang,et al."Regulating the mechanical properties and electrical conductivity of CNTs/Cu composites by tailoring nano-sized TiC on the surface of intact CNTs".CARBON 185(2021):428-441.