304不锈钢晶间腐蚀过程中的电化学阻抗谱特征

中国腐蚀与防护学报

2007, Vol. 27

Issue (2): 74-79

研究报告

本期目录 | 过刊浏览

304不锈钢晶间腐蚀过程中的电化学阻抗谱特征

秦丽雁;宋诗哲;卢玉琢

天津大学材料学院

EIS CHARACTERISTICS OF 304 STAINLESS STEEL DURING INTERGRANULAR CORROSION

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天津大学材料学院

全文: PDF(1143 KB)

摘要: 用电化学阻抗谱(EIS)方法研究了固溶态、敏化态304不锈钢在0.5mol/L H2SO4+0.01mol/L KSCN溶液中的阻抗谱特征.研究表明，不锈钢在不同极化电位下的阻抗谱呈现活性溶解、活化－钝化、钝化及再活化的特征.达到再活化之前，固溶态和敏化态的不锈钢在0.5mol/L H2SO4+0.01mol/L KSCN溶液中呈现相同的EIS特征；而在再活化区，钝化膜局部溶解，EIS图有两个容抗弧，低频容抗弧延伸到第二象限,呈现负电阻特征，低频下敏化态比固溶态不锈钢阻抗模值小一个数量级.

关键词 ：不锈钢, 晶间腐蚀, 电化学阻抗谱

Abstract：Electrochemical impedance spectroscopy (EIS) measurements were performed on sensitized and solutioned 304 stainless steels respectively in the process of Electrochemical potentiodynamic reactivation (EPR) polarization in 0.5mol/L H2SO4+0.01mol/L KSCN solution.The variation rules of impedance resistance in process of EPR polarization were analyzed.It was found that the EIS spectra of the stainless steels during EPR polarization exhibited features of active dissolution,activation-passivation,passivation and reactivation.Before reactivation,the two kinds of stainless steels had the same EIS characteristics.In the reactivating region the passivated film dissolved partially and the impedance modulus of the sensitized stainless steel was one magnitude order smaller than that of the solution-treated stainless steel,indicating that intergranular corrosion had occurred on the surface of the sensitized stainless steel.In addition two capacitive loops appeared in the EIS of the sensitized stainless steel and it was quite interesting that the second arc at the low frequency range was actually a negative resistance capacitive loop.These results may provide essential basis for detecting intergranular corrosion susceptibility of stainless steel by electrochemical impedance spectroscopy.

Key words： stainless steel intergranular corrosion electrochemical impedance spectroscopy

收稿日期: 2005-10-31

ZTFLH:

TG174.3

通讯作者: 秦丽雁 E-mail: victorya@163.com.cn

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秦丽雁; 宋诗哲; 卢玉琢 . 304不锈钢晶间腐蚀过程中的电化学阻抗谱特征[J]. 中国腐蚀与防护学报, 2007, 27(2): 74-79 .

链接本文:

https://www.jcscp.org/CN/Y2007/V27/I2/74

[1]Fang Z,Zhang Y L,Wu Y S.Detecting susceptibility to intergranularcorrosion of 308L stainless steel by EPR method[J].Corros.Sci.Prot.Technol.,1996,8:87-93(方智,张玉林,吴荫顺等.电化学动电位再活化法评价308L不锈钢的晶间腐蚀敏感性[J].腐蚀科学与防护技术,1996,8:87-93)
[2]Fang Z,Wu Y S,Zhang L,et al.Application of the modified electro-chemical potentiodynamic reactivation method to evaluate intergranu-lar corrosion susceptibility of stainless steel[J].Corrosion,1998,54:339-346
[3]Matula M,Hyspecka L,Svoboda M,et al.Intergranular corrosion ofAISI 316L steel[J].Mater.Charact.,2001,46:203-210
[4]Huang C A,Chang Y Z,Chen S C.The electrochemical behavior ofaustenitic stainless steel with different degrees of sensitization in thetranspassive potential region in 1 mol/L H2SO4containing chloride[J].Corros.Sci.,2004,46:1501-1513
[5]Cihal C,Desestret A,Froment M,et al.Tests for evaluation of sensi-bility of stainless steels to intergranular corrosion[A].Proc.5th Eu-ropean Corros.Cong[C].Paris,1973,249-255
[6]Qin L Y,Dong Z D.Application of electrochemical method to evalu-ate intergranular corrosion susceptibility of stainless steels[J].TaiGang Science and Technology,1991,3:80-86(秦丽雁,董征东.用电化学方法测量不锈钢晶间腐蚀的敏感性[J].太钢科技,1991,3:80-86)
[7]Conde A,Damborenea J de.Evaluation of exfoliation susceptibility bymeans of the electrochemical impedance spectroscopy[J].Corros.Sci.,2000,42:1363-1377
[8]Yu F Z,Ma D Z,Liu G R,et al.Corrosion and Protection HandbookI.Corrosion theories tests and detections[M].Beijing:Chemical In-dustry Press,1990,70-80(于福州,马德章,刘国瑞等.腐蚀与防护手册第一册,腐蚀理论试验及监测[M].北京:化学工业出版社.1990,70-80)
[9]Bastidas J M,Lpez MF,Gutirrez A,Torres C L.Chemical analysisof passive films on type AISI 304 stainless steel using soft X-rayabsorption spectroscopy[J].Corros.Sci.,1998,40:431-438
[10]Cao C N,Zhang J Q.An Introduction to Electrochemical ImpedanceSpectroscopy[M].Beijing:Science Press,2002,45-75(曹楚南,张鉴清.电化学阻抗谱导论[M].北京:科学出版社,2002.45-75)

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