Multi-walled carbon nanotube-reinforced copper nanocomposite coating fabricated by low-pressure cold spray process

Seungchan Cho, Kenta Takagi, Hansang Kwon, Dowon Seo, Kazuhiro Ogawa, Keiko Kikuchi, Akira Kawasaki

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)

Abstract

Multi-walled carbon nanotube (MWCNT)-reinforced copper (Cu) nanocomposite coatings were successfully deposited on aluminum (Al) substrate by a cold spraying process at a low pressure. The microstructure and the Raman spectrum of the low-pressure-cold-sprayed MWCNT-Cu nanocomposite coating showed that the MWCNTs maintained their tube structure in the Cu matrix, even though structural damage to the MWCNTs increased slightly. MWCNT-Cu nanocomposite-coated Al exhibits higher thermal diffusivity than pure-Cu-coated Al with a comparable hardness. The higher thermal diffusivity of the MWCNT-Cu coating could be explained by the dispersion of MWCNTs within the clean and closed CNT/Cu interfaces, which were achieved with the aid of compressive stress during the cold spraying.

Original languageEnglish
Pages (from-to)3488-3494
Number of pages7
JournalSurface and Coatings Technology
Volume206
Issue number16
DOIs
Publication statusPublished - 2012 Apr 15

Keywords

  • Carbon nanotube
  • Cold spray
  • Copper
  • Nanocomposite
  • Thermal diffusivity

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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