利用虚拟仪器实现电化学频率调制腐蚀速度检测  

A VIRTUAL INSTRUMENT FOR CORROSION RATE MEASUREMENT BY ELECTROCHEMICAL FREQUENCY MODULATION TECHNIQUE

作　　者：韩磊[1] 宋诗哲[1] 张帆[1] 

机构地区：[1]天津大学材料科学与工程学院,天津300072

出　　处：《中国腐蚀与防护学报》2008年第2期65-69,共5页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金重大项目(50499335);国家重点基础研究发展规划项目(2006CB605004)

摘　　要：利用虚拟仪器技术建立了基于电化学频率调制技术的腐蚀速度检测系统-Virtual EFM。在实验室应用EFM方法测定Q235碳钢/稀硫酸、Q235碳钢/氯化钠溶液及304不锈钢/稀盐酸等体系的阴阳极Tafel常数和腐蚀电流密度,结果表明:Virtual EFM工作可靠、测试结果准确。An EFM system for corrosion rate test based on electrochemical frequency modulation technique has been established by means of virtual instrument, which consists of a potentiostat, a laptop equipped with a DAQ card and applications developed in LabVIEW. Experiments has been performed in laboratory to determine anodic and cathodic Tafel slopes as well as corrosion current densities for the systems 304 stainless steel/HCl and Q235 steel in H2SO4 and NaCl.It was shown that the EFM system could be used successfully for corrosion rate measurement under various corrosion conditions.

关 键 词：EFM 腐蚀速度 虚拟仪器 

分 类 号：TG174.31[金属学及工艺—金属表面处理]