%0 Journal Article
%T THE EIS ANALYSIS OF CATHODIC REACTIONS DURING CO2 CORROSION OF N80 STEEL<br>N80油套管钢CO2腐蚀阴极过程电化学阻抗谱分析
%A CHEN Changfeng
%A LU Minxu
%A ZHAO Guoxian
%A BAI Zhenquan
%A YAN Milin
%A YANG Yanqing
%A <br>陈长风
%A 路民旭
%A 赵国仙
%A 白真权
%A 严密林
%A 杨延清
%J 金属学报
%D 2003
%I 
%X The electrochemical impedance spectroscopy (EIS) was used to analyze the possible cathodic reactions and reaction rate during CO2 corrosion of steel N80 in various electrolytes. The results demonstrate that H+, H2O, H2CO3 and HCO3- all could be reduced. But the reduction rate is different in various electrolytes. In acidic electrolyte saturated with CO2, the reduction rate of H+ is high and controlls cathodic reaction rate, and the reduction rates of H2CO3 and HCO3- are slow. In litmusless solution saturated with CO2, reduction of H2CO3 and HCO3- become the most important cathodic reaction and the reduction rate of H+ is slow. In NaHCO3 alkalic solution saturated with CO2, only the reduction of HCO3- is the dominant cathodic reaction. In all above-mentioned solutions, the reduction rate of H2O is low and could not influence cathodic exchange current density.
%K steel N80
%K CO2 corrosion
%K electrochemical impedance spectroscopy
%K cathodic reaction<br>N80钢
%K CO2腐蚀
%K 电化学阻抗谱
%K 阴极反应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=8E2B07827EB7282C&yid=D43C4A19B2EE3C0A&vid=7C3A4C1EE6A45749&iid=CA4FD0336C81A37A&sid=BB0EA31DB1B01173&eid=10F298ED9F164662&journal_id=0412-1961&journal_name=金属学报&referenced_num=5&reference_num=14