Consolidation of carbon nanofiber/copper composites by hot-pressing and spark plasma sintering: A comparative study

Jorge Barcena, Vladimir Martinez, Ramon Martinez, Jon Maudes, Jose Lgnaclo Sarries, Iñaki Caro, Javier Jesus Gonzalez, Javier Coleto

Research output: Contribution to journalArticle in an indexed scientific journalpeer-review

3 Scopus citations

Abstract

Vapour grown carbon nanofibers have been incorporated into a copper matrix at 20 and 40 volume fractions. The manufacturing route involves the dispersion of the carbon nanofibers and their subsequent coating by electroless plating with copper. The consolidation of the composite powders was performed by two different techniques: hot-pressing and spark plasma sintering. A comparative study of the two processes is reported, in terms of microstructure, dispersion and porosity. The consolidation by hot-pressing (at 900 °C, 30 MPa) led to poreless composites (relative density > 96%) and to a homogeneous microstructure. On the other hand, spark plasma sintering (at 400 °C, 75 MPa) led to lower densification (relative density<96%) and heterogeneous microstructure.

Original languageEnglish
Pages (from-to)1797-1802
Number of pages6
JournalJournal of Nanoscience and Nanotechnology
Volume9
Issue number3
DOIs
StatePublished - Mar 2009

Keywords

  • Electroless plating
  • Hot-pressing
  • Metal-matrix composites
  • Nanoscale dispersion
  • Spark plasma sintering
  • Vapour grown carbon nanofibers

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