三価クロム/有機添加剤/濃厚伝導性塩水溶性浴からの冷間圧延鋼板上への光沢性硬質Cr-C電気めっき

書誌事項

タイトル別名
  • Electrodeposition of High-bright Hard Cr-C Layers on Steel Plate Cold-rolled Commercial from Trivalent Chromium/Organic Additives/Highly Concentrated Conductive Salt Aqueous Baths
  • サンカ クロム/ユウキ テンカザイ/ノウコウ デンドウセイエン スイヨウセイヨク カラ ノ レイカン アツエン コウバン ジョウ エ ノ コウタクセイ コウシツ Cr-C デンキメッキ

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抄録

<p>To prepare Cr-C alloy layers having high current efficiency, high Vickers hardness, and high brightness in electrodeposition on commercial cold-rolled steel plate, this study examined additives put into electrodeposition baths. From a Cr2 (SO43/(NH42SO4 aqueous bath containing oxalic acid and CrCl3/highly concentrated CaCl2/H3BO3 aqueous bath containing glycine, Cr-C alloy layers having high current efficiency, high Vickers hardness, and high brightness were formed. With the optimized bath compositions, the Cr-C alloy layers were produced with high current efficiency, high Vickers hardness, and high brightness. The highest current efficiency of 31.8% was obtained in a 0.4 mol kg-1 glycine/0.75 mol kg-1 CrCl3/4.68 mol kg-1 CaCl2/0.49 mol kg-1 H3BO3 bath. The Cr-C layers mainly comprised Cr3C2 and Cr7C3 alloys.</p>

収録刊行物

  • 表面技術

    表面技術 73 (7), 365-373, 2022-07-01

    一般社団法人 表面技術協会

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