Electrodeposition of Zn-V oxide composite from strong agitated solution without dispersed particles

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

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    Electrodeposition of Zn-V oxide composite was examined from an agitated sulfate solution without dispersed particles containing Zn2+ and VO2+ at pH 2 and 40 °C under galvanostatic conditions. Although V content in deposits decreased for the moment with increasing current density regardless of flow rate of electrolyte, the further increase in current density brought about the increase in V content in deposits. The curves, which shows the relationship between the V content in deposits and current density, shifted to the higher current density region with increasing flow rate of electrolyte. Agitation of the electrolyte decreased the V content of the deposits but reduced the segregation of V oxide. EDX point analysis of cross section of deposits revealed that the V oxide concentrated at the surface of deposits. It was found from the polarization curves in 3% NaCl solution that the corrosion potential of deposited Zn-V oxide films depended on the V content in deposits regardless of the flow rate of electrolyte and it shifted to more noble direction with codeposition of V oxide at V contents in deposits below 2 mass%. At V contents of < 4 mass%, the corrosion current density of deposits decreased with increasing V contents in deposits. The corrosion current densities of deposits obtained from agitated solutions were smaller than that from un-agitated solutions.

    Original languageEnglish
    Pages (from-to)376-382
    Number of pages7
    JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
    Volume100
    Issue number3
    DOIs
    Publication statusPublished - 2014

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Physical and Theoretical Chemistry
    • Metals and Alloys
    • Materials Chemistry

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