电化学噪声技术在铝合金大气腐蚀检测中的应用  

APPLYING ELECTROCHEMICAL NOISE TECHNIQUE TO DETECT THE ATMOSPHERIC CORROSION OF ALUMINUM ALLOY

作　　者：韩磊[1] 宋诗哲[1,2] 张正[1] 

机构地区：[1]天津大学材料科学与工程学院,天津300072 [2]中国科学院金属研究所金属腐蚀与防护国家重点实验室,沈阳116023

出　　处：《中国腐蚀与防护学报》2009年第6期471-474,共4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)资助

摘　　要：基于电化学噪声(EN)技术建立了适合现场应用的铝合金大气腐蚀测量系统。研制了铝合金大气腐蚀传感器,构建了零阻电流(ZRA)模式的EN测量系统和软件。利用该系统在实验室模拟和户外大气环境下进行了EN测试,研究结果表明,通过电位和电流噪声信号及噪声电阻变化可以对铝合金大气腐蚀过程进行有效检测。An in-field measurement system for detecting the atmospheric corrosion of aluminum alloy was built based on electrochemical noise technology. A special probe, the apparatus and software were developed for performing electrochemical noise measurement with zero resistance ammetry （ZRA） mode. Experiments were carried out in the air condition in laboratory and then in natural atmosphere outdoors. The results showed that the atmospheric corroding process could be effectively detected or monitored by analysis of the electrochemical potential and current noise and the changing of noise resistance.

关 键 词：电化学噪声 铝合金 大气腐蚀 噪声电阻 

分 类 号：TG174.3[金属学及工艺—金属表面处理]