Effect of particle size on the co-deposition of diamond with nickel in presence of a redox-active surfactant and mechanical property of the coatings

Nabeen K. Shrestha, Takashi Takebe, Tetsuo Saji

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

Particle reinforced Ni/diamond composite coatings containing various amount of the reinforcement (up to 57.6 vol.%) were prepared by the electroplating technique using a Watt's nickel bath in which the diamond particles were dispersed with the aid of a redox-active surfactant containing an azobenzene moiety. Five different sizes of diamond particles with the mean diameter ranging from 0.21 to 2.91 μm were used to investigate the effect of the particle size in their co-deposition with nickel under the influence of the above redox-active surfactant and the mechanical property especially the micro-hardness and the abrasion wear of the composite coatings reinforced with various amount of the diamond particles was studied. Among all, the smallest diamond particles exhibited the highest particle co-deposition of 57.6 vol.%. The micro-hardness and the wear resistance of this composite with the 57.6 vol.% diamond were about 4.5 and 14 times, respectively, than that of a nickel coating without any reinforcement.

Original languageEnglish
Pages (from-to)1570-1575
Number of pages6
JournalDiamond and Related Materials
Volume15
Issue number10
DOIs
StatePublished - Oct 2006

Keywords

  • Azobenzene
  • Composite plating
  • Diamond
  • Nickel
  • Surfactant

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