摘要
在 3%NaCl、0 0 6 %NaCl及自来水 3种介质中 ,研究了Q2 35钢在方波脉冲电流作用下阴极电位响应波形的特征 .提出可以直接采用阴极电位波形的最下沿电位值作为阴极的极化电位 ,并对响应波形的特征进行了分析 .
The characteristics of the cathodic potential waveforms of the Q235 steel electrodes polarized by square wave pulsed currents (SWPCs) were studied in 3%NaCl,0.06%NaCl and tap water.The results show that polarized by SWPCs the cathodic potential waveforms have the basic features of those in RC parallel circuits,and move negatively with increase of the polarizing time but their shapes do not change obviously.The solution resistance may create great influence on the measured potential waveforms so that it must be compensated to obtain the real ones.The real amplitudes of the potential waveforms are very small (<10 mV) and decrease with increasing frequencies of SWPCs.So it was pointed out that the bottommost potential of the cathodic potential waveform could be used as the cathodic polarization potential of the electrode.The characteristics of the cathodic potential waveforms were analyzed in the paper.
出处
《中国腐蚀与防护学报》
CAS
CSCD
2002年第5期295-299,共5页
Journal of Chinese Society For Corrosion and Protection
关键词
方波
脉冲电流
电位波形
波形特征
阴极保护
square wave,pulsed current,potential waveform,waveform characteristics,cathodic protection,mechanism
