室温海水中钛钌阳极缝隙内的电化学行为  

Electrochemical Behavior in Crevice of RuO_2TiO_2/Ti Anode

作　　者：彭乔[1] 殷正安[1] 刘磊[1] 

机构地区：[1]大连理工大学化工学院防腐教研室,116012

出　　处：《材料保护》1998年第12期27-29,共3页Materials Protection

摘　　要：研究了钛钌阳极在室温海水介质中缝隙内的电化学行为。结果表明：钛钌阳极在室温海水中工作时，其缝隙内个质会发生严重酸化，缝内电位低于缝外电位，缝外工作电流密度达到10mA／cm2，缝隙内pH值下降到1．5左右，缝内、外电位差达1．0V。钛钌阳极在室温海水介质中工作时不产生缝隙腐蚀。The electrochemical behavior in crevice of RuO_2,-TiO_2/ Ti anode in sea water at normal atmospheric temperature was studied. It showed that the potential of anode changes with crevice length and width, polarization time and current desity; and the solutions in crevice are seriously acidized when anode works. The potential of the outside of crevice is higer than that of the inside of crevice. At the current density of 100 mA/cm2, difference between the potential of the outside of crevice and that of the inside of crevice is closed to 1 V; and pH value of the solution in crevice decreases to 1. 5.

关 键 词：电化学 钛钌阳极 缝隙腐蚀 海水 腐蚀试验 

分 类 号：TG174.36[金属学及工艺—金属表面处理] TG172.5[金属学及工艺—金属学]