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

被引：81

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.

引用

页码：55 / 62

页数：8

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