Nonequilibrium fluctuations in micro-MHD effects on electrodeposition

被引：37

作者：

Aogaki, Ryoichi ^{[1
]}

Morimoto, Ryoichi ^{[2
]}

Asanuma, Miki ^{[3
]}

机构：

[1] Polytech Univ, Sagamihara, Kanagawa 2291196, Japan

[2] Saitama Ind Technol Ctr, Kawaguchi, Saitama 3330844, Japan

[3] Yokohama Polytech Coll, Naka Ku, Yokohama, Kanagawa 2310811, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2010年 / 322卷 / 9-12期

关键词：

MHD effect; Micro-MHD effect; Nonequilibrium fluctuation; Electrodeposition; Electrochemistry; Magnetoelectrodeposition; Magnetoelectrochemistry; Magnetic field; MAGNETIC-FIELD; GROWTH;

D O I：

10.1016/j.jmmm.2009.02.144

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In copper electrodeposition under a magnetic field parallel to electrode surface, different roles of two kinds of nonequilibrium fluctuations for micro-magnetohydrodynamic (MHD) effects are discussed; symmetrical fluctuations are accompanied by the suppression of three dimensional (3D) nucleation by micro-MHD flows (the 1st micro-MHD effect), whereas asymmetrical fluctuations controlling 2D nucleation yield secondary nodules by larger micro-MHD flows (the 2nd micro-MHD effect). Though the 3D nucleation with symmetrical fluctuations is always suppressed by the micro-MHD flows, due to the change in the rate-determining step from electron transfer to mass transfer, the 2D nucleation with asymmetrical fluctuations newly turns unstable, generating larger micro-MHD flows. As a result, round semi-spherical deposits, i.e., secondary nodules are yielded. Using computer simulation, the mechanism of the 2nd micro-MHD effect is validated. (C) 2009 Elsevier B. V. All rights reserved.

引用

页码：1664 / 1668

页数：5

共 12 条

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[2]

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[3]

AOGAKI R, MAGNETOHYDRODYNAMICS

[4]

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