X80管线钢在0.5 mol/L NaHCO3+0.02 mol/L 强激光与粒子束NaCl溶液中的点腐蚀性能
Pitting Corrosion of X80 Pipeline Steel in 0.5 mol/L NaHCO3+0.02 mol/L NaCl Solution
摘 要
采用动电位极化和电化学阻抗法研究了X80和X70管线钢在0.5 mol/L NaHCO3+ 0.02 mol/L NaCl溶液中的腐蚀行为,并通过电容测量方法对其腐蚀机理进行了探讨.结果表明:在0.5 mol/L NaHCO3+ 0.02 mol/L NaCl溶液中,X80管线钢的点腐蚀电位Epit比X70钢的要正一些,发生点腐蚀的倾向性更小.Mott-Schottky分析表明:X80比X70管线钢表面钝化膜内的施主密度更低,缺陷数量更少,从而减少了点腐蚀萌生的潜在位置,使X80钢比X70钢具有更好的耐点蚀性能.
点蚀
莫特-肖特基分析
X80 pipeline steel
pitting corrosion
Mott-Schottky analysis
Abstract
The corrosion behavior of X80 and X70 pipeline steels in 0.5 mol/L NaHCO3+0.02 mol/L NaCl solution was studied by potentiodynamic polarization technique and EIS,and the corrosion mechanism was investigated by capacitance measurements.It was shown that the potential of pitting corrosion for X80 pipeline steel was more noble than that of X70 steel,and the pitting probability was lower for X80 steel.Mott-Schottky results indicated that the value of donor density for passive film formed on X80 steel was less than that on X70 steel,and the potential sites for pitting corrosion initiation were more for X70 steel,so the pitting resistance of X80 steel was better than that of X70.
中图分类号 TG174.2
所属栏目 试验研究
基金项目 国家科技基础条件平台建设项目(2005DKA10400)和国家科技支撑计划课题(2006BAK02B01-06)资助
收稿日期 2007/9/16
修改稿日期 2008/1/5
网络出版日期
作者单位点击查看
引用该论文: LIANG Ping,LI Xiao-gang,DU Cui-wei,CHEN Xu. Pitting Corrosion of X80 Pipeline Steel in 0.5 mol/L NaHCO3+0.02 mol/L NaCl Solution[J]. Corrosion & Protection, 2008, 29(11): 657～660
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参考文献
【1】冯耀荣,庄传晶.X80级管线钢管工程应用的几个问题[J].焊管,2006,29(1):6-10.
【2】黄志潜.X80级管线钢在高压大流量输气管道上的应用与发展前景[J].焊管,2005,28(2):1-10.
【3】罗金恒,王曰燕,赵 新,等.在役油气管道土壤腐蚀研究现状[J].石油工程建设,2004,30(6):1-6.
【4】Park J J,Pyun S I,Na K H,et al.Effect of passivity of the oxide film in low-pH stress corrosion cracking of API 5L X-65 pipeline steel in bicarbonate solution[J].Corrosion,2002,58(4):329-336.
【5】Gonzalea-Rodriguez J G,Casales M,Salinas-Bravo V M,et al.Effect or microstructure on the stress corrosion cracking of X80 pipeline steel in diluted sodium bicarbonate solutions[J].Corrosion,2002,58(7):584-590.
【6】杨武.埋地油气管线应力腐蚀破裂研究的一些新进展[J].腐蚀与防护,2003,24(11):461-467.
【7】魏宝明.金属腐蚀理论及应用[M].北京:化学工业出版社,2001:326.
【8】Chen Y Y,Chou L B,Shih H C.Effect of solution pH on the electrochemical polarization and stress corrosion cracking of alloy 690 in 5M NaCl at room temperature[J].Materials Science and Engineering A ,2005,396:129-137.
【9】林玉华,杜荣归,胡融刚,等.不锈钢钝化膜耐腐蚀性与半导体特性的关联研究[J].物理化学学报,2005,21(7):740-745.
【10】Alves V A,Brett C M A.Characterisation of passive films formed on mild steels in bicarbonate solution by EIS[J].Electrochimica Acta,2002,47(13-14):2081-2091.
【11】Cheng Y F,Luo J L.Electronic structure and pitting susceptibility of passive film on carbon steel[J].Electrochimica Acta,1999,44(17):2947-2957.
【12】Pagitsas M,Diamantpoulou A,Sazou D.Distinction between general and pitting corrosion based on the nonlinear dynamical response of passive iron surfaces perturbed chemically by halides[J].Electrochemistry Communications,2001,3(7):330-335.
【13】Pagitsas M,Diamantpoulou A,Sazou D.A point defect model for the general and pitting corrosion on iron-oxide-electrolyte interface deduced from current oscillations[J].Chaos,Solitons and Fractals,2003,17(2-3):263-275.
【2】黄志潜.X80级管线钢在高压大流量输气管道上的应用与发展前景[J].焊管,2005,28(2):1-10.
【3】罗金恒,王曰燕,赵 新,等.在役油气管道土壤腐蚀研究现状[J].石油工程建设,2004,30(6):1-6.
【4】Park J J,Pyun S I,Na K H,et al.Effect of passivity of the oxide film in low-pH stress corrosion cracking of API 5L X-65 pipeline steel in bicarbonate solution[J].Corrosion,2002,58(4):329-336.
【5】Gonzalea-Rodriguez J G,Casales M,Salinas-Bravo V M,et al.Effect or microstructure on the stress corrosion cracking of X80 pipeline steel in diluted sodium bicarbonate solutions[J].Corrosion,2002,58(7):584-590.
【6】杨武.埋地油气管线应力腐蚀破裂研究的一些新进展[J].腐蚀与防护,2003,24(11):461-467.
【7】魏宝明.金属腐蚀理论及应用[M].北京:化学工业出版社,2001:326.
【8】Chen Y Y,Chou L B,Shih H C.Effect of solution pH on the electrochemical polarization and stress corrosion cracking of alloy 690 in 5M NaCl at room temperature[J].Materials Science and Engineering A ,2005,396:129-137.
【9】林玉华,杜荣归,胡融刚,等.不锈钢钝化膜耐腐蚀性与半导体特性的关联研究[J].物理化学学报,2005,21(7):740-745.
【10】Alves V A,Brett C M A.Characterisation of passive films formed on mild steels in bicarbonate solution by EIS[J].Electrochimica Acta,2002,47(13-14):2081-2091.
【11】Cheng Y F,Luo J L.Electronic structure and pitting susceptibility of passive film on carbon steel[J].Electrochimica Acta,1999,44(17):2947-2957.
【12】Pagitsas M,Diamantpoulou A,Sazou D.Distinction between general and pitting corrosion based on the nonlinear dynamical response of passive iron surfaces perturbed chemically by halides[J].Electrochemistry Communications,2001,3(7):330-335.
【13】Pagitsas M,Diamantpoulou A,Sazou D.A point defect model for the general and pitting corrosion on iron-oxide-electrolyte interface deduced from current oscillations[J].Chaos,Solitons and Fractals,2003,17(2-3):263-275.
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