Electrodeposition of Ni-Al2O3 composite coatings employing supercritical CO2 baths

Shih Yi Chiu, Sung Ting Chung, Cheng Yang Lin, Wen Ta Tsai

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15 Citations (Scopus)

Abstract

The co-deposition of Ni and Al2O3 by electrodeposition in supercritical CO2 (sc-CO2) baths with and without emulsification was studied. The material characteristics of the Ni-Al2O3 composite coatings, including its crystal structure, surface morphology, chemical composition, micro-hardness, wear resistance, and corrosion resistance, were all examined and compared with those of pure deposited Ni. Although a reduction in electrodeposition rate and a lower solid Al2O3 particle content in the composite coatings were obtained incorporating sc-CO2 bath, substantial increases in the micro-hardness and wear resistance of the coatings were observed comparing with those formed in conventional bath. The advantages of sc-CO2 electrodeposition, with and without surfactant addition, over the conventional electrodeposition of composite coatings, are addressed.

Original languageEnglish
Pages (from-to)68-73
Number of pages6
JournalSurface and Coatings Technology
Volume247
DOIs
Publication statusPublished - 2014 May 25

All Science Journal Classification (ASJC) codes

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

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