On thermal and electrical properties of multiwalled carbon nanotubes/copper matrix nanocomposites

被引：62
|
作者：
Koppad, Praveennath G. [1 ,2 ]
Ram, H. R. Aniruddha [1 ,3 ]
Ramesh, C. S. [1 ,4 ]
Kashyap, K. T. [1 ]
Koppad, Ravikiran G. [5 ]
机构：
[1] PES Inst Technol, Dept Mech Engn, Ctr Nanocomposites Res, Bangalore 560085, Karnataka, India
[2] Jawaharlal Nehru Technol Univ Hyderabad, Hyderabad 500085, Andhra Pradesh, India
[3] Jyothy Inst Technol, Dept Mech Engn, Bangalore 560062, Karnataka, India
[4] PES Inst Technol, Dept Mech Engn, Ctr Surface Engn Res, Bangalore 560085, Karnataka, India
[5] BV Bhoomaraddi Coll Engn & Technol, Dept Elect & Elect Engn, Hubli 580031, India
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 580卷
关键词：
Composite materials; Powder metallurgy; Thermal properties; Grain refinement; REINFORCED COPPER; CONDUCTIVITY;
D O I：
10.1016/j.jallcom.2013.06.123
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：
This study reports on the investigation of thermal and electrical properties of multiwalled carbon nanotubes reinforced copper (MWCNT/Cu) nanocomposites. The nanocomposites were fabricated with different weight fractions of MWCNTs by powder metallurgy technique followed by hot forging as secondary process. The thermal properties of hot forged nanocomposites were measured by Laser flash technique at 473 K. The results indicated that the thermal conductivity of MWCNT/Cu nanocomposites decreased with the increase in MWCNTs content. The drop in the thermal conductivity of nanocomposites is mainly attributed to the interface thermal resistance, scattering of phonons on dislocations, random distribution of MWCNTs and the kinks formed in MWCNTs during the fabrication. The decrease in electrical conductivity of nanocomposites is attributed to the grain refinement caused by the incorporation of MWCNTs. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：527 / 532
页数：6
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