期刊
SYNTHETIC METALS
卷 159, 期 5-6, 页码 424-429出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2008.10.017
关键词
Nickel-coated nanotubes; Single-walled carbon nanotube; Copper
资金
- Agency for Defense Development [UD060013AD]
- Basic Research Program of the Korea Science & Engineering Foundation [R01-2006-000-10065-0(2008)]
- Center for Nanoscale Mechatronics Manufacturing
- Ministry of Science and Technology, Korea
Mechanical, electrical and thermal properties of nickel-coated single-walled carbon nanotube (SWNT) reinforced copper matrix composites were investigated. The composites were fabricated by means of a powder metallurgy process, which consists of mixing nickel-coated carbon nanotubes with copper powders followed by hot-pressing. A homogeneous mixture could be obtained by the mechanical mixing process due to the similar density of nickel and copper. A high temperature displacement rate tester and a ball-on-disk device were employed to evaluate mechanical and tribological properties. Also, a four-point probe technique and a laser flash method were used to obtain electrical resistance and thermal conductivity. The mechanical and tribological properties of the copper matrix composites significantly improved by the incorporation of nickel-coated SWNT reinforcements. However, electrical resistance and thermal conductivity of the nickel-coated SWNT reinforced copper matrix composites were similar to those of the sintered nickel-copper specimens with the equivalent composition. (C) 2008 Elsevier B.V. All rights reserved.
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