Chromium carbide/Carbon Nanotube Hybrid Structure Assisted Copper Composites with Low Temperature Coefficient of Resistance

Seungchan Cho, Keiko Kikuchi, Eunkyung Lee, Moonhee Choi, Ilguk Jo, Sang Bok Lee, Sang Kwan Lee, Akira Kawasaki

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

In order to explore the possibility of using carbon nanotube (CNT) to introduce and control the temperature coefficient of resistance (TCR) of metal matrix composite, relatively thick and short multi-walled CNTs (MWCNTs) were introduced in the metal matrix with in-situ formation of chromium carbide (Cr7C3) at the CNT/copper (Cu) interface. We demonstrate that incompatible properties such as electrical conductivity and TCR can be achieved simultaneously by introducing MWCNTs in the Cu matrix, with control of the interfacial resistivity using the MWCNT/Cr7C3-Cu system. High electrical conductivity of 94.66 IACS and low TCR of 1,451 10-6 °C-1 are achieved in the 5 vol.% MWCNT-CuCr composite. In-situ formation of Cr7C3 nanostructures at the MWCNT/Cu interface by reaction of diffused Cr atoms and amorphous carbon of MWCNTs would assist in improving the electrical properties of the MWCNT-CuCr composites.

Original languageEnglish
Article number14943
JournalScientific reports
Volume7
Issue number1
DOIs
Publication statusPublished - 2017 Dec 1

ASJC Scopus subject areas

  • General

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