交流电流作用下X80钢在碱性溶液中阴极保护准则的适用性能
Cathodic Protection Criterion Applicability of X80 Steel with Alternating Current Interference in Alkaline Solution
摘 要
采用极化曲线、电化学阻抗谱(EIS)、SEM等方法研究了不同交流电流密度条件下X80钢在0.5 mol/L NaHCO3溶液中-850 mV(vs.CSE)阴极保护准则下的腐蚀特征。结果表明,当阴极Tafel斜率大于阳极Tafel斜率时，X80钢交流电腐蚀较轻，当阴极Tafel斜率远小于阳极Tafel斜率时，X80钢发生交流电腐蚀; 随着交流电流密度的增加，腐蚀产物膜电阻及电荷转移电阻均出现了波动，但总的趋势是减小的，表明X80钢不断发生交流电流腐蚀; 最后确定了阴极保护准则下交流电流腐蚀防护范围。
X80钢
极化曲线
电化学阻抗谱
阴极保护
AC density
X80 steel
polarization curve
electrochemical impedance spectroscopy(EIS)
cathodic protection
Abstract
The corrosion characteristics of X80 steel in 0.5 mol/L NaHCO3 solution under the condition of different alternating current (AC) densities with the -850 mV (CSE) cathodic protection criterion was studied by polarization curves, electrochemical impedance spectroscopy(EIS) and SEM. The results show that when the cathodic Tafel slope was greater than the anodic Tafel slope, X80 steel AC current corrosion was lighter, when the cathodic Tafel slope was less than the anodic Tafel slope, the steel was bound to an AC current corrosion. With the increase of AC density, the corrosion product film resistance and the charge transfer resistance exhibited fluctuation, but the general trend was decrease, indicating that X80 steel suffered corrosion constantly. Finally the alternating current corrosion protection scope under the cathodic protection criteria was determined.
中图分类号 TG174
所属栏目 应用技术
基金项目 中石油集团公司工程建设分公司项目(2011GJTC-01-03)
收稿日期 2013/4/11
修改稿日期
网络出版日期
作者单位点击查看
备注张鹏(1980-),工程师,硕士,从事管道腐蚀与防护技术,
引用该论文: ZHANG Peng,MA Jin-fu,WANG Fei. Cathodic Protection Criterion Applicability of X80 Steel with Alternating Current Interference in Alkaline Solution[J]. Corrosion & Protection, 2014, 35(2): 175
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参考文献
【1】董亮,路民旭,杜艳霞,等. 埋地管道交流腐蚀的研究进展[J]. 中国腐蚀与防护学报,2011,31(3):173-176.
【2】GUMMOW R A,WAKELIN R G,SEGALL S M. AC corrosion-a new challenge to pipeline integrity[C]//Corrosion/1998,Houston,TX:NACE,1998,98566.
【3】俞蓉蓉,蔡志章. 地下金属管道的腐蚀与防护[M]. 北京:石油工业出版社,1998.
【4】米琪. 交流干扰-埋地管道完整性的新威胁及其危险性的分类标准[J]. 防腐保温技术,2008,16(31):27-35.
【5】BOSCH R B W. Theoretical study of AC-induced corrosion considering diffusion phenomena[J]. Corrosion Science,1998,40(3):323-336.
【6】丁清苗,王辉,吕毫龙,等. 电化学方法研究交流干扰对阴极保护电位的影响[J]. 腐蚀与防护,2011,32(12):984-987.
【7】王佳,曹楚南,林海潮. 孔蚀发展期的电极阻抗频谱特征[J]. 中国腐蚀与防护学报,1998,9(4):271-274.
【8】曾潮流,王文,吴维. 熔融盐热腐蚀的电化学阻抗模型[J]. 金属学报,1999,35(7):751-754.
【9】BERTOCCI U. AC induced corrosion:The effect of an alternating voltage on electrodes under charge-transfer control[J]. Corrosion,1979,35(5):211-215.
【10】POOKOTE S R,CHIN D T. Effect of alternating current on the underground corrosion of steels[J]. Materials Performance,1978,17(3):9-15.
【11】林翠，肖志阳，梁健能. 镁合金在SO2薄膜后的电化学腐蚀行为[J]. 机械工程材料,2013,37(6):55-60.
【2】GUMMOW R A,WAKELIN R G,SEGALL S M. AC corrosion-a new challenge to pipeline integrity[C]//Corrosion/1998,Houston,TX:NACE,1998,98566.
【3】俞蓉蓉,蔡志章. 地下金属管道的腐蚀与防护[M]. 北京:石油工业出版社,1998.
【4】米琪. 交流干扰-埋地管道完整性的新威胁及其危险性的分类标准[J]. 防腐保温技术,2008,16(31):27-35.
【5】BOSCH R B W. Theoretical study of AC-induced corrosion considering diffusion phenomena[J]. Corrosion Science,1998,40(3):323-336.
【6】丁清苗,王辉,吕毫龙,等. 电化学方法研究交流干扰对阴极保护电位的影响[J]. 腐蚀与防护,2011,32(12):984-987.
【7】王佳,曹楚南,林海潮. 孔蚀发展期的电极阻抗频谱特征[J]. 中国腐蚀与防护学报,1998,9(4):271-274.
【8】曾潮流,王文,吴维. 熔融盐热腐蚀的电化学阻抗模型[J]. 金属学报,1999,35(7):751-754.
【9】BERTOCCI U. AC induced corrosion:The effect of an alternating voltage on electrodes under charge-transfer control[J]. Corrosion,1979,35(5):211-215.
【10】POOKOTE S R,CHIN D T. Effect of alternating current on the underground corrosion of steels[J]. Materials Performance,1978,17(3):9-15.
【11】林翠，肖志阳，梁健能. 镁合金在SO2薄膜后的电化学腐蚀行为[J]. 机械工程材料,2013,37(6):55-60.
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