用电化学方法研究碳纤维增强树脂基复合材料的腐蚀失效行为  

STUDY ON CORROSIVE FAILURE BEHAVIOR OF CARBON FIBER / EPOXY COMPOSITES BY ELECTROCHEMICAL METHODS

作　　者：吕小军[1] 张琦[1] 刁鹏[1] 马兆庆[1] 

机构地区：[1]北京航空航天大学材料学院,北京100083

出　　处：《复合材料学报》2005年第3期35-39,共5页Acta Materiae Compositae Sinica

基　　金：国防"十五"计划重点项目(BHD3.1)

摘　　要：尝试用电化学阻抗图谱和循环伏安曲线的方法研究电化学表征参数与复合材料腐蚀程度之间的相关性,用电化学方法研究了环境因素对碳纤维增强环氧树脂基复合材料内部结构的破坏机理。测试结果显示,碳纤维本身不会发生电化学反应,主要破坏机理为溶液离子逐渐渗入复合材料内部,导致复合材料内部结构受到破坏。用电化学方法可以在线获得复合材料内部溶液离子浓度及溶液离子在复合材料内部的渗透过程,据此可判断复合材料内部在环境因素作用下的变化。In order to understand how the environmental factors affect the internal structure of the carbon fiber reinforced epoxy resin composites (CFRERC), the relationship between the electrochemical parameters and the corrosive extent of the composites was investigated by means of the electrochemical impedance spectroscopy (EIS) and cyclic voltammograms (CV) curves. The test results show that the fiber itself does not react with the environment. The ions penetrate into composites and the ions concentration increases with the immersion time, which leads to the failure of the composites. The results indicate that the concentration and the penetration process of the ions in the carbon fiber reinforced epoxy resin composites can be detected by the electrochemical method.

关 键 词：碳纤维增强复合材料 电化学阻抗图谱 破坏机理 

分 类 号：TB332[一般工业技术—材料科学与工程]