Electrodeposition of Co-Mo-P barrier coatings for Cu/Au coated systems

C. L. Siu, Hau Chung Man, C. H. Yeung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)


By using citrate as the complexing agent, cobalt-molybdenum-phosphorus (Co-Mo-P) alloy coatings were successfully developed and electrodeposited. Coatings containing up to about 10% Mo have been produced. Coating containing 8% Mo, 20% phosphorus and Co balance have been investigated further as barrier coating. To study the diffusion property, the apparent interdiffusion coefficients of Cu/CoMo-P/Ni were determinated. The micro-profiling and Boltzmann-Matano Method were used to obtain the interdiffusion coefficients. It was found that the interdiffusion coefficients for nickel are higher than that the apparent interdiffusion coefficients of the Cu/Co-Mo-P alloys. The results have indicated the potentials of Co-MoP alloy as effective substitutes for nickel.
Original languageEnglish
Pages (from-to)2223-2227
Number of pages5
JournalSurface and Coatings Technology
Issue number7
Publication statusPublished - 21 Dec 2005


  • Amorphous coating
  • Barrier coating
  • Electroplating
  • Interdiffusion coefficients
  • Nickel ion release

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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