Bulk Cu-NbC nanocomposites with high strength and high electrical conductivity

被引：90
作者：
Zeng, Wei [1 ,4 ]
Xie, Jingwen [1 ]
Zhou, Dengshan [2 ,3 ]
Fu, Zhiqiang [4 ]
Zhang, Deliang [1 ,2 ,3 ]
Lavernia, Enrique J. [4 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
[2] Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Liaoning, Peoples R China
[3] Northeastern Univ, Sch Mat Sci & Engn, Inst Ceram & Powder Met, Shenyang 110819, Liaoning, Peoples R China
[4] Univ Calif Irvine, Dept Chem Engn & Mat Sci, Irvine, CA 92607 USA
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 745卷
基金：
美国国家科学基金会; 中国国家自然科学基金;
关键词：
Cu alloys; Nanocrystalline metal; Mechanical properties; Electrical conductivity; INDUCED GRAIN-GROWTH; CR-ZR ALLOYS; PLASTIC-DEFORMATION; NANOCRYSTALLINE CU; COPPER; COMPOSITE; STRESS; METALS; RESISTIVITY; BOUNDARIES;
D O I：
10.1016/j.jallcom.2018.02.215
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report on a study aimed at simultaneously achieving high strength, high electrical conductivity and high thermal stability in bulk nanocrystalline (NC) Cu-NbC nanocomposites. We describe an approach that involves adding NbC nanoparticles (similar to 7 nm) into a nanocrystalline Cu matrix (similar to 96 nm) via in-situ formation during sintering of high energy mechanically milled powder into a compact. Our results show that the presence of thermally stable NbC nanoparticles in the bulk NC Cu-NbC nanocomposite contributes to a high tensile strength (868 MPa) in combination with a thermally stable nanocrystalline Cu matrix, and a high electrical conductivity of similar to 56% IACS (International Annealed Copper Standard). (c) 2018 Elsevier B.V. All rights reserved.
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收藏
页码：55 / 62
页数：8
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