磁阻探针腐蚀检测技术的应用

CORROSION DETECTING TECHNIQUE BY RELUCTANCE PROBE

用磁阻法腐蚀速度快速测试系统研究了碳钢在不同充气状态自来水中和添加缓蚀剂的 0 .5mol·L-1HCl中的腐蚀行为 ,建立了磁阻法与电化学测试联用的方法 。

A reluctance method of measuring corrosion rate, which is based on the measurement of metal loss through the change of the reluctance of probe is introduced and used to study the corrosion of carbon steel in tap water with different aeration and in 0.5 mol&middotL-1 HCl with and without the presence of PAAC and Tw-20. The method is nondestructive, rapid, sensitive in measurement of corrosion rate and can also be used to study the adsorption process of inhibitors on the surface of metal materials. A new method, the reluctance method allied with electrochemical method is given, which can properly monitor the relative corrosion rate of metal materials with a common reluctance probe under the condition of cathodic protection.