Double layer mechanism in sel-organization of copper secondary nodules under a parallel magnetic field

R. Aogaki, R. Morimoto, A. Sugiyama, M. Asanuma

Research output: Contribution to journalArticle

Abstract

From the longterm response of electrolytic current of copper deposition in a parallel magnetic field, a new type of micro-MHD effect on the secondary nodules arising from the unstable growth of nonequilibrium fluctuations in the electrical double layer (second micro-MHD effect) was theoretically analyzed. Such instability emerges with charac-teristic convection cells (micro-MHD flows). Then, the unstable condition that double layer overpotential must be positive was derived, which was ascertained by the copper deposition with proton adsorption at the double layer, leading to secondary nodules with ca. 100 μm diameter. To validate the theoretical results, the surface morphology of the deposit and the velocity distribution of the convection cells were theoretically calculated.

Original languageEnglish
Pages (from-to)245-252
Number of pages8
JournalMagnetohydrodynamics
Issue number2
Publication statusPublished - 2009

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy(all)

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