Interdiffusion of the Electroless Ni-P Deposit with the Steel Substrate

Kwang Lung Lin, Po Jen Lai

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20 Citations (Scopus)


The diffusion between carbon steel substrate and the electroless Ni-P deposit were investigated with SEM-EDX and TEM for the microstructure of the diffusion layer and the diffusion kinetics. Phosphorus is excluded from the diffusion layer while nickel dissolves in iron to give the alpha-Fe phase. The diffusion layer grows parabolically with respect to time, and is strongly governed by temperature. The diffusivities were estimated with the Boltzmann-Matano method to show that the diffusion enroutes grain boundary at temperatures below 690°C while it enroutes lattice at higher temperatures. The activation energies for these two diffusion paths were estimated from the Arrhenius plot.

Original languageEnglish
Pages (from-to)1509-1513
Number of pages5
JournalJournal of the Electrochemical Society
Issue number5
Publication statusPublished - 1990 May

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry


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