欢迎访问《电化学(中英文)》期刊官方网站,今天是

电化学(中英文) ›› 1998, Vol. 4 ›› Issue (2): 152-158. 

• 研究论文 • 上一篇    下一篇

酸性镀铜体系的交流阻抗研究

邓文,刘昭,林项民,郭鹤桐   

  1. 湘潭工学院化工系,天津大学应化系
  • 收稿日期:1998-05-28 修回日期:1998-05-28 出版日期:1998-05-28 发布日期:1998-05-28

Studies on Impedance of Acidcopper Electroplating System

Deng Wen, Liu Zhao, Lin Xiangmin, Guo Hetong   

  1. (Chemical Engineering Dept. of Xiangtan Polytechnical University, Hunan 411201)Liu zhaolin Xiang Min Guo Hetong(Applied Chemistry Dept. of Tianjin University, Tianjin 300072)
  • Received:1998-05-28 Revised:1998-05-28 Published:1998-05-28 Online:1998-05-28

摘要: 研究了基础溶液(0.3mol/LCuSO4+1.94mol/LH2SO4),以及添加60mg/LCl-,300mg/LOP21,30mg/LPEG6000,10mg/L2噻唑啉基二硫丙烷磺酸钠(代号TDY,自合成添加剂)后体系的阻抗行为.结果表明:1)Cl-在铜沉积中有增大阴极极化的作用.2)铜离子的放电为分步反应,即Cu2+→Cu+;Cu+→Cu(吸附)→Cu(晶格),在含有Cl-离子和不含Cl-的溶液中,Cu2+离子以不同的络合离子形式放电.3)Cu沉积反应的阻抗行为存在弥散效应.

关键词: 酸性镀铜体系, 等效电路, 电化学交流阻抗, 弥散效应

Abstract: The impedance characteristics of elementary solution (0.3 mol/L CuSO_4+1.94 mol/L H_2SO_4) and that with the addition of 60 mg/L Cl~-, 300 mg/L OP_21, 30 mg/L PEG, 10 mg/L 2thiazolinyldithiopropane sulfate(self-synthesized additive) are investigated and interpreted in terms of equivalent circuit. The results indicated: (1) Cl~- ion can increase cathodic polarization. (2) A twostep reaction mechanism corresponds to Cu~2+ reduction, that is: Cu~2+→Cu~+, Cu~+→Cu(adsorption)→Cu(lattice), Cu~2+ react in different forms of complex ion in sulfuric acidcupric sulfate solution with or without Cl~- ion. (3) cupric redution impedance shows dispersion effect in the solution that contains Cl~- ion.

中图分类号: