物理化学学报 >> 2012, Vol. 28 >> Issue (03): 615-622.doi: 10.3866/PKU.WHXB201201101

电化学和新能源 上一篇    下一篇

虚拟恒电位仪的研制及其在腐蚀电化学测量中的应用

孙凤娟, 王佳   

  1. 中国海洋大学化学化工学院, 山东青岛 266100; 金属腐蚀与防护国家重点实验室, 沈阳 110015
  • 收稿日期:2011-10-19 修回日期:2011-12-30 发布日期:2012-02-23
  • 通讯作者: 王佳 E-mail:jwang@ouc.edu.cn
  • 基金资助:

    国家自然科学基金(50971118, 51131005)资助项目

Development and Application of Virtual Potentiostat on Electrochemical Corrosion Measurement

SUN Feng-Juan, WANG Jia   

  1. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, Shandong Province, P. R. China; State Key Laboratory for Corrosion and Protection of Metals, Shenyang 110015, P. R. China
  • Received:2011-10-19 Revised:2011-12-30 Published:2012-02-23
  • Contact: WANG Jia E-mail:jwang@ouc.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (50971118, 51131005).

摘要: 恒电位仪是腐蚀电化学测量最重要的基本设备. 虚拟恒电位仪用图形程序软件取代复杂硬件来实现恒电位功能. 它的结构和参数灵活, 构建简单, 能满足多方面腐蚀电化学测试方法的需求, 虚拟恒电位仪的实现是发展虚拟腐蚀电化学仪器的重要步骤. 本文采用LabVIEW 2010编程系统和比例-积分-微分(PID)控制技术, 研制了虚拟恒电位仪, 并组建了VEC11-A 腐蚀电化学测试系统, 该系统能满足不同阻抗体系的腐蚀电化学测试需求. 其腐蚀电位、稳态极化曲线、线性极化曲线、循环伏安、动电位扫描、恒电位阶跃等常规腐蚀电化学测量结果与2263电化学测试系统相近, 能够满足常规腐蚀电化学测试要求, 具有很大的发展空间.

关键词: 虚拟仪器, 稳态极化曲线, 恒电位仪, PID控制, LabVIEW

Abstract: A potentiostat is a fundamental piece of equipment for the study of corrosion electrochemistry and research into the application of virtual technology to potentiostats is becoming increasingly important. The functions of virtual potentiostats can be controlled and implemented using software instead of complex hardware. They would be capable of not only meeting the demands of a variety of electrochemical tests, but would also be more flexible offering a simpler structure and operating parameters. This would represent a significant development in virtual electrochemical corrosion instrumentation. In this paper, a virtual potentiostat measurement system VEC11-A (virtual electrochemical corrosion test system) has been designed based on LabVIEW. The virtual instrument system of the potentiostat, based on the proportionintegration- differentiation (PID) control technology operated under the LabVIEW 2010 programming platform, was used to determine corrosion potential measurement, polarization curves, linear polarization curves, cyclic voltammetry curves, dynamic potential anode passivation curves, and constant potential step curves. In contrast with normal electrochemical instruments, the system worked well for electrolyzers of different impedances.

Key words: Virtual instrument, Steady-state polarization curve, Potentiostat, PID control, LabVIEW

MSC2000: 

  • O646