摘要
采用浸泡试验和电化学试验研究了碳钢在不同直流交流电密度下的腐蚀规律,随着直流杂散电流密度的增大,碳钢表面点蚀坑数量和大小增大;腐蚀电位随杂散电流密度的增大而提高,腐蚀电流密度随之增大,短时间直流杂散电流对腐蚀产生严重影响。针对本科实践教学,可以从电化学和表面形貌表征方面来设计杂散电流对碳钢腐蚀行为的影响。
The corrosion behavior of carbon steel under different direct stray current density was studied by immersion test and electrochemical test.With the increase of current density,the number and size of pits on the surface of carbon steel increased.The corrosion potential and corrosion current density increased with the current density.A short period of stray current had a serious effect on carbon steel corrosion.The influence of stray current on corrosion behavior of carbon steel can be designed from the electrochemistry and surface morphology characterization for the undergraduate practice teaching.
作者
万红霞
宋东东
陈长风
李婷婷
马连铮
WAN Hong-xia;SONG Dong-dong;CHEN Chang-feng;LI Ting-ting;MA Lian-zheng(College of New Energy Materials,China University of Petroleum(Beijing),Beijing 102249;Institute of Advanced Wear&Corrosion Resistant and Functional Materials,Jinan University,Guangdong Guangzhou 510632,China)
出处
《广州化工》
CAS
2020年第18期47-49,共3页
GuangZhou Chemical Industry
关键词
杂散电流
形貌
电化学
stray current
morphology
electrochemistry
