摘要
采用电化学方法制备了用于混凝土结构钢筋腐蚀监测的光纤传感器（ＦＯＣＳ），该方法基于电沉积于光纤纤芯上的敏感膜能够将腐蚀信息传递给光纤内传导的光波，从而获取腐蚀信息，实现腐蚀监测．对ＦＯＣＳ上Ｆｅ－Ｃ合金膜的腐蚀传感能力的研究表明：电化学腐蚀过程中光功率变化速度最大处的电位与腐蚀电流峰电位相对应．证明了采用光纤传感技术监测混凝土结构钢筋腐蚀是可行的．
This paper reports the research and development of a Fiber Optics Corrosion Sensor (FOCS) fabricated by electroplating a corrosion sensing film onto an optic fiber core. The structure of film electroplated in an Iron() sulfate electrolyte containing a small amounts of citric acid and L\|ascorbic acid was studied by X\|ray diffraction and burning gas capacity method. The electrochemical corrosion test and chemical corrosion test were used to evaluate the sensing ability of the Fe\|C alloy film. The initial results showed : (1) the peak potential of scanning process was in accord with the potential for the largest changing speed of output power in 3.5%NaCl solution; (2) the time taken to rise to maximum output power for FOCS was shortened with increasing the concentration of nitric acid; (3) the responding time was prolonged by almost 3 times, compared with that for non\|passivated film. The results demonstrated the feasibility of using optical fiber corrosion sensors for monitoring corrosion of ste
出处
《腐蚀科学与防护技术》
CAS
CSCD
1999年第3期169-173,共5页
Corrosion Science and Protection Technology
关键词
光纤传感器
腐蚀监测
钢筋混凝土结构
fiber optics sensor, corrosion monitoring, reinforced concrete structure, Fe\|C alloy\= el in civil structures.\=
