表面技術
Online ISSN : 1884-3409
Print ISSN : 0915-1869
67 巻 , 12 号
選択された号の論文の16件中1~16を表示しています
特集/スマートモビリティを支える表面技術
総説
◆次世代交通手段を支える素材と表面処理◆
解説
トピックス
◆高度センシング技術を支える表面処理◆
解説
◆電装化を支える表面処理◆
解説
トピックス
研究論文
  • 森河 務, 中出 卓男
    2016 年 67 巻 12 号 p. 685-688
    発行日: 2016/12/01
    公開日: 2017/12/01
    ジャーナル フリー

    Electrodeposited Al2O3 composite Cr-C alloy coatings were produced from an oxalic acid bath prepared by adding oxalic acid to a hot CrO3 solution. Chromium ions in the oxalic bath include Cr3+ oxalate complex and Cr6+ ions. The Al2O3 particles were co-deposited easily along with the Cr-C alloy coating from the oxalic bath. The content was controlled up to about 3 wt% by plating conditions. The Al2O3 contents of the coatings decreased with current density and increased with bath temperature. The added amount of oxalic acid at make-up of the bath increased the Al2O3 contents of the coatings. The co-deposition mechanism was supported with a two-step adsorption mechanism proposed by Guglielmi, but the adsorption of Al2O3 tothe cathode in the oxalic bath was much weaker than that of either Ni composite plating or Cr composite plating.

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