Electrodeposition of Zn-V oxide composites from a strongly agitated solution without dispersed particles

Hiroaki Nakano, Satoshi Oue, Yasunori Annoura, Takaaki Nagai, Naoto Oho, Hisaaki Fukushima

研究成果: ジャーナルへの寄稿記事

5 引用 (Scopus)

抄録

The electrodeposition of a Zn-V oxide composite under galvanostatic conditions from an agitated sulfate solution without dispersed particles and containing Zn2+and VO2+at pH 2 and 313 K was investigated. Although the V content in the deposits initially decreased with increasing current density, irrespective of the flow rate of electrolyte, a further increase in the current density resulted in an increase in the V content of the deposits. The curves, which show the relationship between the V content in the deposits and the current density, shifted to the higher-current-density region with increasing flow rate of the electrolyte. Agitation of the electrolyte decreased the V content of the deposits but reduced the segregation of V oxide. EDX point analysis of the cross-section of the deposits revealed that the V oxide concentrated at the surface of the deposits. The polarization curves in 3% NaCl solution revealed that the corrosion potential of the deposited Zn-V oxide films depended on the V content in the deposits, irrespective of the flow rate of electrolyte, and that the corrosion potential shifted toward the more noble direction with the codeposition of V oxide when the V content in the deposits was less than 2 mass%. At V contents of <4 mass%, the corrosion current density of the deposits decreased with increasing V content. The corrosion current densities of the deposits obtained from agitated solutions were smaller than those of the deposits obtained from unagitated solutions.

元の言語英語
ページ(範囲)1906-1912
ページ数7
ジャーナルisij international
54
発行部数8
DOI
出版物ステータス出版済み - 1 1 2014

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Electrodeposition
Oxides
Deposits
Composite materials
Current density
Electrolytes
Corrosion
Flow rate
Sulfates
Oxide films
Energy dispersive spectroscopy
Polarization

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

これを引用

Electrodeposition of Zn-V oxide composites from a strongly agitated solution without dispersed particles. / Nakano, Hiroaki; Oue, Satoshi; Annoura, Yasunori; Nagai, Takaaki; Oho, Naoto; Fukushima, Hisaaki.

:: isij international, 巻 54, 番号 8, 01.01.2014, p. 1906-1912.

研究成果: ジャーナルへの寄稿記事

Nakano, Hiroaki ; Oue, Satoshi ; Annoura, Yasunori ; Nagai, Takaaki ; Oho, Naoto ; Fukushima, Hisaaki. / Electrodeposition of Zn-V oxide composites from a strongly agitated solution without dispersed particles. :: isij international. 2014 ; 巻 54, 番号 8. pp. 1906-1912.
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abstract = "The electrodeposition of a Zn-V oxide composite under galvanostatic conditions from an agitated sulfate solution without dispersed particles and containing Zn2+and VO2+at pH 2 and 313 K was investigated. Although the V content in the deposits initially decreased with increasing current density, irrespective of the flow rate of electrolyte, a further increase in the current density resulted in an increase in the V content of the deposits. The curves, which show the relationship between the V content in the deposits and the current density, shifted to the higher-current-density region with increasing flow rate of the electrolyte. Agitation of the electrolyte decreased the V content of the deposits but reduced the segregation of V oxide. EDX point analysis of the cross-section of the deposits revealed that the V oxide concentrated at the surface of the deposits. The polarization curves in 3{\%} NaCl solution revealed that the corrosion potential of the deposited Zn-V oxide films depended on the V content in the deposits, irrespective of the flow rate of electrolyte, and that the corrosion potential shifted toward the more noble direction with the codeposition of V oxide when the V content in the deposits was less than 2 mass{\%}. At V contents of <4 mass{\%}, the corrosion current density of the deposits decreased with increasing V content. The corrosion current densities of the deposits obtained from agitated solutions were smaller than those of the deposits obtained from unagitated solutions.",
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