Species of Trivalent Chromium in the Bath for the Electrodeposition of Chromium
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摘要: 研究證明三價鉻離子在HCl體系中適應電活性物質是[Cr(H2O)6]3+,不同pH通過溶液中的存在形態而影響Cr3+電沉積過程。同時證實了Cr3+在HCOOH或(NH2)2CO存在時不與三價鉻形成配位化合物。Abstract: The species of the trivalent ions of chromium in the HCl containing systems have been studied. The proper electroactive species was found to be[Cr(H2O)6]3+. The electrodepostion of chromium was found to be strongly affected by the pH of the bath due to the different species of trivalent chromium at different pH, and coordination compounds of Cr3+ with HCOOH or(NH2)2CO were not found.
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Key words:
- trivalent chromium /
- electroplating /
- coordination compounds /
- polargraphic curve
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