Electrodeposition of Composites of Zinc with Vanadium Oxide from Sulfate Solutions

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概要

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• Electrodeposition of Zn with V was examined from optionally agitated sulfate solutions containing Zn2+ and VO2+ at pH 0–3 and 40°C under galvanostatic conditions. XPS spectra of the deposits showed that V was present in the deposited Zn in the form of its oxide, formed by hydrolysis of V ions. The V content of the deposits increased with increasing pH of the solution and increasing current density. These conditions appear to accelerate the hydrolysis of V ions by means of an increase in hydrogen evolution in the cathode layer. SEM and EPMA studies of the deposits showed that the V in the deposits was segregated at the edges of layered platelet crystals of Zn. Agitation of the electrolyte decreased the V content of the deposits but reduced the segregation of V oxide. Anodic polarization curves for dissolution of Zn in 3% NaCl solution were polarized by codeposition of V oxide with Zn for V contents of <5 mass%. The corrosion current densities of deposits obtained from agitated solutions were smaller than those from un-agitated solutions.

• 社団法人 日本鉄鋼協会の論文
• 2008-04-15

著者

• Nakano Hiroaki

  Department Of Materials Science & Engineering Kyushu University

• Nakano H

  Department Of Physics Niigata University

• KURAI Daisuke

  Department of Materials Process Engineering, Kyushu University

• Nakano Hiroaki

  Faculty of Engineering, Kyushu University

• Oue Satoshi

  Faculty of Engineering, Kyushu University

• Kobayashi Shigeo

  Faculty of Engineering, Kyushu Sangyo University

• Fukushima Hisaaki

  Faculty of Engineering, Kyushu University

• Oue Satoshi

  Department Of Materials Science & Engineering Kyushu University

• Fukushima Hisaaki

  Department Of Materials Science & Engineering Kyushu University

• Fukushima Hisaaki

  Faculty Of Engineering Kyushu University

• Kozaki Daisuke

  Department Of Materials Process Engineering Kyushu University

• Kozaki Daisuke

  Graduate School For International Development And Cooperation Hiroshima University

• Nakano H

  Microelectronics Engineering Laboratory Toshiba Corporation

• Nakano Hiroaki

  Laboratory Of Innovational Biology Department Of Integrated Biosciences Graduate School Of Frontier

• Kobayashi Shigeo

  Department Of Applied Chemistry And Biochemistry Kyushu Sangyo University

• Kobayashi Shigeo

  Faculty Of Engineering Kyushu Sangyo University

• NAKANO Hiroaki

  Department of Physics, Niigata University

• NAKANO Hiroaki

  Department of Physics, Kyoto University

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