三价铬离子在电沉积过程中的形态

Species of Trivalent Chromium in the Bath for the Electrodeposition of Chromium

摘要: 研究证明三价铬离子在HCl体系中适应电活性物质是Cr(H₂O)₆³⁺,不同pH通过溶液中的存在形态而影响Cr³⁺电沉积过程。同时证实了Cr³⁺在HCOOH或(NH₂)₂CO存在时不与三价铬形成配位化合物。

Abstract: The species of the trivalent ions of chromium in the HCl containing systems have been studied. The proper electroactive species was found to beCr(H₂O)₆³⁺. 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.