硫化氢腐蚀监测用钯合金膜氢传感器  

HYDROGEN SENSOR WITH PALLADIUM ALLOY FILM FOR MONITORING THE RATE OF HYDROGEN PERMEATION IN H_2S CORROSION

作　　者：赵亮[1] 余刚[1] 张学元[2] 韩恩厚[2] 刘小辉[3] 

机构地区：[1]湖南大学化学化工学院,长沙410082 [2]中国科学院金属研究所,沈阳110016 [3]中国石化集团茂名石化公司,茂名525024

出　　处：《中国腐蚀与防护学报》2005年第5期280-284,共5页Journal of Chinese Society For Corrosion and Protection

摘　　要：研究用Pd75Ag25合金膜作为氢传感的敏感元件和辅助电极,纯镍丝作参比,用0.2mol/dm3KOH溶液作电解液组成的Devanathn-Stachutski封闭电池制作原子氢渗透速率测量的氢传感器.测定了该传感器的背景电流的变化、信号响应时间、灵敏度和重现性等性能,与Devanathn-Stachurski实验装置对比分析信号的正确性.试验了温度冲击对传感器输出信号的影响.并将研制的传感器进行了现场监测试验,其测量结果合理,该传感器可在5℃～50℃之间的温度范围工作,用于因硫化氢腐蚀在设备的钢壁中原子氢的渗透速率的监测.A sealed Devanathan- Stachurski cell as hydrogen sensor has been developed for monitoring atomic hydrogen permeation rate. Pd75Ag25 alloy is used as susceptive component and counter electrode. A piece of pure nickel is used as reference electrode. 0.2 mol/dm^3 KOH is filled in the cell. The background current change and signal response time were detected. The sensitivity and recurrence of the developed sensor were researched. The output of current signal from the sensor was analyzed by comparing to output of current signal from an original Devanathan- Stachurski cell. The effect of temperature impact on the senor signal was tested. The developed sensor was applied to measure the hydrogen permeation rate in field. The field result is reasonable. The working temperature of the sensor is ranged from 5℃ to 50 ℃. It is used to monitor the permeation rate of atomic hydrogen in steel wall of the equipment owing to H2S corrosion.

关 键 词：Pd75Ag25合金 氢传感器 硫化氢腐蚀 氢致裂开 监测 

分 类 号：TG174[金属学及工艺—金属表面处理] TG146.2[金属学及工艺—金属学]