Synergistic strengthening effect of tungsten carbide (WC) particles and silicon carbide whiskers (SiCw) on mechanical properties of Cu-Al2O3 composite

被引：24
作者：
Lin, Huanran [1 ]
Guo, Xiuhua [1 ,2 ,3 ]
Song, Kexing [1 ,2 ,3 ]
Li, Shaolin [1 ,2 ,3 ]
Feng, Jang [1 ,2 ,3 ]
Zhang, Xiangfeng [1 ]
Feng, Mengqi [1 ]
机构：
[1] Henan Univ Sci & Technol, Luoyang 471023, Peoples R China
[2] Key Lab Mat Sci & Proc Technol Nonferrous Met Hen, Luoyang 471023, Peoples R China
[3] Prov & Ministerial Coconstruct Collaborat Innovat, Luoyang 471023, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2021年 / 15卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Copper matrix composites; SiC whiskers; WC particles; Nano-Al2O3; particles; Mechanical properties; Synergistic strengthening; ELECTRICAL-CONDUCTIVITY; INTERNAL OXIDATION; CARBON NANOTUBES; MATRIX; BEHAVIOR; MICROSTRUCTURE; FABRICATION; NANOWIRES; SIZE;
D O I：
10.1016/j.jmrt.2021.09.103
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cu-Al2O3 composites are widely used in electrical contact fields because of their excellent electrical conductivity, thermal conductivity and arc erosion resistance. (WC + SiCw)/Cu-Al2O3 composites with better properties were prepared by powder metallurgy combined with an internal oxidation process that introduced micron-sized WC particles and SiCw into the Cu-Al2O3 composite. The synergistic strengthening mechanism effect of nanoAl(2)O(3) particles, micron-sized WC particles and SiCw in copper matrix composites was analyzed. The results show that there is a semi-coherent interface between the nano-Al2O3 particles and the copper matrix. The ultimate tensile strength of the (1WC + 2SiC(w))/Cu-Al2O3 composite is 531.6 MPa, which is 12.7% and 4.5% higher than that of the Cu-Al2O3 composite and the SiCw/Cu-Al2O3 composite, respectively. According to theoretical calculations and an analysis of the strengthening mechanism, the contributions of the Oro-wan strengthening and load transfer strengthening mechanism in the (1WC + 2SiC(w))/Cu Al2O3 composite are 27.3% and 16.6% respectively. The synergistic strengthening effect of particles and whiskers contributed 6.0% to the tensile strength of the (1WC + 2SiC(w))/Cu Al2O3 composite. (C) 2021 The Author(s). Published by Elsevier B.V.
引用
收藏
页码：2837 / 2847
页数：11
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