Electrodeposition of metal/graphite composite film which has the oriented structure

Hidetaka Hayashi, Daisuke Takeda, Akira Kishimoto

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The electrodeposition of Cu-graphite composite film from copper sulfate bath containing graphite particle has been studied. The graphite particles were oxidized with nitric acid in order to introduce surface oxides. The role of the functional groups on the graphite edge during Cu-graphite composite plating was evaluated by the potentiometric titration method. The titration curve obtained in the presence of graphite particles and that without graphite particles crossed over each other at the pH 2.45 which is probably pKa of the compound in the presence of Cu 2+ in the bath. However, this value is found to be lower than the pH 3 in the same solution without Cu 2+ ion. This phenomena might be recognized by the adsorption of Cu 2+ ion on the functional group of the graphite at the pH higher than the pKa value. Upon analyzing the surface morphology of the Cu-graphite composite coating, it is found that the specific ordered structure of the coating can be fabricated by controlling the pH of the bath.

Original languageEnglish
Pages (from-to)619-623
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume52
Issue number8
DOIs
Publication statusPublished - Aug 1 2005

Keywords

  • Chemical anisotropy
  • Composite plating
  • Graphite
  • Potentiometric titration

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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