交流干扰影响下的最小阴极保护电位  

Minimum Cathodic Protection Potential under AC Interference Condition

作　　者：杨涛[1] 曹备[1] 吴荫顺[1] 和宏伟[2] 杨江[1] 

机构地区：[1]北京科技大学腐蚀与防护中心,北京100083 [2]北京市燃气集团有限责任公司,北京100011

出　　处：《腐蚀与防护》2013年第7期580-582,共3页Corrosion & Protection

摘　　要：通过模拟试验装置,采用恒电位和恒电流极化试验研究了交流干扰影响下埋地管道阴极保护系统的破坏机理,探究新的确定阴极保护电位的方法。结果表明,可以根据保护电流密度曲线的趋势制定新的阴极保护准则。根据试验结果确定了0～100A·m-2干扰电流密度范围内的最小阴极保护电位限值公式。The mechanism of the destruction of buried pipeline cathodic protection （CP） system was studied by constant potential polarization and constant current polarization using laboratory simulation device. A new method to determine the cathodic protection potential was also studied. The results show that a new buried metallic pipeline CP criterion under AC interference condition can be established based on the trend of protection current density curve. A minimum cathodic protection potential formula at AC interference current deusities from 0 to 100 A ·m^-2 was built up.

关 键 词：交流电干扰 保护电流密度 阴极保护准则 

分 类 号：TG174.41[金属学及工艺—金属表面处理]