MoO_4~(2-)对2205双相不锈钢氢脆敏感性的影响
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摘要
采用电化学阻抗谱研究了钼酸盐在双相不锈钢表面的吸附行为,进而研究钼酸盐对2205双相不锈钢氢渗透行为的影响。结果表明,MoO42-通过吸附,在试样表面形成一层表面阻挡膜;Mo O42-能够抑制H原子在双相不锈钢表面的吸附,降低表面的H数量以及氢的浓度梯度,使H原子在双相不锈钢中的扩散驱动力减小,降低氢原子在双相不锈钢中的扩散速率和双相不锈钢的氢脆敏感性。
In this paper, electrochemical impedance has been used to investigate the adsorption of MoO42-on the surface of 2205 duplex stainless steel(DSS), and further, the effect of MoO42-on hydrogen permeation behavior of DSS has been investigated. The results revealed that molybdate ion formed a film on the steel surface by adsorption, which could act as a barrier for the adsorption of H atom, thereby, the hydrogen diffusion rate was declined; the susceptibility to hydrogen embrittlement of 2205 DSS in sodium chloride solution was decreased by the presence of molybdate ion.
In this paper, electrochemical impedance has been used to investigate the adsorption of MoO42-on the surface of 2205 duplex stainless steel(DSS), and further, the effect of MoO42-on hydrogen permeation behavior of DSS has been investigated. The results revealed that molybdate ion formed a film on the steel surface by adsorption, which could act as a barrier for the adsorption of H atom, thereby, the hydrogen diffusion rate was declined; the susceptibility to hydrogen embrittlement of 2205 DSS in sodium chloride solution was decreased by the presence of molybdate ion.
引文
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[19]张体明,赵卫民,郭望.阴极保护下X65钢在模拟海水中的氢脆敏感性研究[J].中国腐蚀与防护学报,2014,34(4):315
[2]Turnbull A,Hutchings R B.Analysis of hydrogen atom transport in a two phase alloy[J].Mater.Sci.Eng.,1994,177(1/2):161
[3]Askari A,Das S.Practical numerical analysis of a crack near a weld subjected to primary loading and hydrogen embrittlement[J].J.Mater.Process.Technol.,2006,173(1):1
[4]Owczarek E,Zakroczymski T.Hydrogen transport in a duplex stainless steel[J].Acta Mater.,2000,48(12):3059
[5]Zakroczymski T,Owczarek E.Electrochemical investigation of hydrogen absorption in a duplex stainless steel[J].Acta Mater.,2002,50(10):2701
[6]Girish K P,Hidenori T,Yu-ichi K.Hydrogen distribution and hydrogen cracking susceptibility of a martensitic-austenitic steel welding wire[J].Mater.Lett.,2014,136(1):22
[7]Solheim K G,Solberg J K,Walmsley J,et al.The role of retained austenite in hydrogen embrittlement of supermartensitic stainless steel[J].Eng.Fail.Anal.,2013,34:140
[8]Bilmes P D,Solani M,Llorente C L.Characteristics and effects of austenite resulting from tempering of 13Cr-Ni Mo martensitic steel weld metal[J].Mater.Charact.,2001,46(4):285
[9]Zakroczymski T,Glowacka A,Swiatnicki W.Effect of hydrogen concentration on the embrittlement of a duplex stainless steel[J].Corros.Sci.,2005,47(6):1403
[10]Eghbali F,Moayed M H,Davoodi A,et al.Critical pitting temperature(CPT)assessment of 2205 duplex stainless steel in 0.1 M Na Cl at various molybdate concentrations[J].Corros.Sci.,2011,53(1):513
[11]Zhang H,Zhao Y L,Jiang Z D.Effects of temperature on the corrosion behavior of 13Cr martensitic stainless steel during exposure to CO2and Cl-environment[J].Mater.Lett.,2005,59(27):3370
[12]Girault P,Grosseau-poussard J L,Dinhut J F,et al.Influence of a chromium ion implantation on the passive behaioriorof nickel in artificial seawater:An EIS and XPS study[J].Nucl.Instr.Methods Phys.Res.,2001,174(4)B:439
[13]Liu C,Bi Q,Matthews A.EIS comparison on corrosion performance of PVD Ti N and Cr N coated mild steel in 0.5 N Na Cl aqueous solution[J].Corros.Sci.,2001,43(10):1953
[14]Moayed M H,Newman R C.Deterioration in critical pitting temperature of 904L stainless steel by addition of sulfate ions[J].Corros.Sci.,2006,48(11):3513
[15]廖家兴,蒋益明,吴玮巍等.含Cl-溶液中SO2-4对316不锈钢临界点蚀温度的影响[J].金属学报,2006,42(11):1187
[16]Vigdis O,Afaf S,Lise J,et al.FE simulation of hydrogen diffusion in duplex stainless steel[J].Int.J.Hydrogen Energy,2014,39(6):1156
[17]Ilevbare G O,Burstein G T.The inhibition of pitting corrosion of stainless steels by chromate and molybdate ions[J].Corros.Sci.,2003,45(7):1545
[18]Pardo A,Merino M C,Coy A E,et al.Pitting corrosion behaviour of austenitic stainless steels-combining effects of Mn and Mo additions[J].Corros.Sci.,2008,50(6):1796
[19]张体明,赵卫民,郭望.阴极保护下X65钢在模拟海水中的氢脆敏感性研究[J].中国腐蚀与防护学报,2014,34(4):315