亜鉛電析皮膜の質量変化におよぼす添加剤の影響-水晶振動子マイクロバランス測定による研究- Influence of Additives in Electrolytic Solution on Mass Change of Zinc Electrodeposited Films -Investigation by Quartz Crystal Microbalance Measurement-

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Natural additive agents such as glue and gelatin have been used for preventing impurities from precipitating during deposition and for surface leveling of deposited films in the electrowinning industry. The mechanism behind the effect of their agents on electrochemical deposition is not yet well understood.<br>We studied the effect of various additives on electrodeposition process in a zinc sulfate electrolytic bath.<br>We used polyethylene glycol (PEG M W 20000, 6000, 2000), polyacrylic acid (PAA M W 240000, 5000, 2000) and polyvinyl pyrrolidon (PVP M. W 360000, 40000, 10000), and their monomers as synthetic additives. We also used another eight types of additives including glycin, alanin, and proline as amino acid additives. Mass changes of deposits were monitored by quartz crystal microbalance (QCM) method. The surface morphology of zinc films was observed by FE-SEM.<br>Results are as follows:<br>1) Zinc deposition was inhibited in the presence of gelatin and polymer additives.<br>2) Amino acid and monomer additives did not inhibit the deposition. Corresponding surface morphology was similar to that in the absence of additives.<br>3) The inhibition effect of PAA was the highest of all tested additives.<br>4) Characteristic mass change was detected during the deposition in the presence of PEG, PAA and PVP.<br>5) From mass change measurements, inhibition by additives could be classified into four different modes<br>(A) The inhibition effect increases with deposition time. (PEG)<br>(B) The inhibition effect decreases with deposition time. (PAA)<br>(C) The inhibition effect was constant during deposition. (Gelatin)<br>(D) No inhibition. (Amino acid, Monomer)

収録刊行物

  • 表面技術 = The Journal of the Surface Finishing Society of Japan  

    表面技術 = The Journal of the Surface Finishing Society of Japan 48(3), 330-336, 1997-03-01 

    The Surface Finishing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002258622
  • NII書誌ID(NCID)
    AN1005202X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09151869
  • NDL 記事登録ID
    4160922
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-291
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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