| Cl~-对Zn-Co(Fe)合金共沉积中Zn转移电流密度的影响 |
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| 引用本文： | 印仁和,方正华,张利,徐红斌.Cl~-对Zn-Co(Fe)合金共沉积中Zn转移电流密度的影响[J].化学学报,2002,60(3):404-407. |
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| 作者姓名： | 印仁和 方正华 张利 徐红斌 |
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| 作者单位： | 上海大学理学院化学系.上海(200436) |
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| 基金项目： | 厦门大学固体表面物理化学国家重点实验室资助项目 |
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| 摘 要： | 在氯化物电解液中的Zn-Co, Zn-Fe合金共沉积，存在着由正常共沉积转变成异 常共沉积的Zn的转移电流密度，该值随着Cl~-浓度的增加而增加，当Cl~-浓度高达 4 mol·dm~(-3)以上时，Zn-Fe合金共沉积中已不存在Zn的转移电流密度，为单一 正常共沉积。这是因为Cl~-降低了Co，特别是Fe的析出过电位之故。
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| 关 键 词： | 锌合金 钴合金 电流密度 沉积 |
| 修稿时间： | 2001年6月18日 |
Effect of Cl~- on the Transition Current Density of Zn during the Electrodeposition Zn-Co, Zn-Fe Alloys |
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| YIN,Ren-He FANG,Zheng-Hua ZHANG,Li XU,Hong-Bin.Effect of Cl~- on the Transition Current Density of Zn during the Electrodeposition Zn-Co, Zn-Fe Alloys[J].Acta Chimica Sinica,2002,60(3):404-407. |
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| Authors: | YIN Ren-He FANG Zheng-Hua ZHANG Li XU Hong-Bin |
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| Institution: | Department of Chemistry, Shanghai University.Shanghai(200436) |
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| Abstract: | For co-deposition of Zn-Co or Zn-Fe alloys in chloride baths it was found that the transition current density of Zn varied with the deposition process from normal co-deposition to anomalous co- deposition. The value of the transition current density increases with the increasing of Cl~- concentration. However, when Cl~- concentration exceeds 4 mol·dm~(-3), the co-deposition process becomes normal type and the transition current density of Zn disappears. It can be attributed to the existence of Cl~-, which decreases the evolution overpotential of Co and Fe metal, especially for Fe metal. |
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| Keywords: | Zn-Co Zn-Fe alloys transition current density anomalous co-deposition |
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