Carbon nanotube reinforced aluminum matrix composites by combined process of SPS pre-sintering and hot extrusion

Hansang Kwon, Akira Kawasaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Aluminum (Al)/carbon nanotube (CNT) composites were fabricated by combined process of SPS pre-sintering and hot extrusion. The CNTs were well dispersed onto the Al particles by a nanoscale dispersion method. The pre-sintered CNT composites prepared by spark plasma sintering were used for subsequent hot extrusion. Microstructural observations by optical, field-emission scanning electron, and high-resolution transmission electron microscope confirmed that the sintered Al/CNT compact and extruded bulk material had a good dispersion of oriented CNTs. Raman spectroscopy showed that the processing did little damage to the CNTs. It is found that the Al-CNT composite showed no decrease in elongation despite highly enhanced tensile strength compared to that of pure Al. It is thought that the thickness of boundary layer could be controlled by the amount of CNT which leads to well aligned CNT in the extrusion direction and also good adhesion between matrix and CNT due to generated aluminum carbide in Al-CNT composite.

Original languageEnglish
Title of host publicationProceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010
PublisherEuropean Powder Metallurgy Association (EPMA)
ISBN (Print)9781899072194
Publication statusPublished - 2010 Jan 1
EventWorld Powder Metallurgy Congress and Exhibition, World PM 2010 - Florence, Italy
Duration: 2010 Oct 102010 Oct 14

Publication series

NameProceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010
Volume1

Other

OtherWorld Powder Metallurgy Congress and Exhibition, World PM 2010
CountryItaly
CityFlorence
Period10/10/1010/10/14

Keywords

  • Carbon nanotube
  • Hot-extrusion
  • Interfacial control
  • Metal-matrix composite
  • Nanocomposite
  • Spark plasma sintering
  • Tensile strength

ASJC Scopus subject areas

  • Mechanics of Materials
  • Ceramics and Composites
  • Materials Chemistry
  • Metals and Alloys
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Carbon nanotube reinforced aluminum matrix composites by combined process of SPS pre-sintering and hot extrusion'. Together they form a unique fingerprint.

Cite this