Cl~-对高氮不锈钢在0.5mol/L NaOH溶液中腐蚀行为的影响
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摘要
利用动电位极化曲线、电化学阻抗谱和恒电位极化电流响应曲线对一种高氮不锈钢在含不同浓度Cl~-的0.5mol/L NaOH溶液中的腐蚀行为进行了研究。结果表明:高氮不锈钢在含Cl~-的0.5mol/L NaOH中具有良好的耐蚀性,极化曲线表现出阳极钝化特征,Cl~-浓度对点蚀电位无显著影响,钝化电流密度随Cl~-浓度的增加而增大;当Cl~-浓度增加到1.00mol/L时,高氮不锈钢表面生成的钝化膜呈n型半导体,仍具有良好的保护性,钝化膜的载流子密度随着Cl~-浓度的增加而增大。
The electrochemical behavior of a high nitrogen stainless steel(HNSS)in 0.5mol/L NaOH solution with different NaCl concentrations was investigated by means of potentiodynamic polarization curves,electrochemical impendence spectrum,current-time transient and Mott-Schottky curves.The results show that the HNSS had good corrosion resistance,and the potentiodynamic polarization curves of the HNSS exhibited anodic passivation in 0.5mol/L NaOH solution containing Cl~-.The concentration of Cl~- had no remarkable effects on pitting potential.The passive current density of the HNSS increased with the increase of Cl~- concentration.The passive film formed on the surface of the HNSS exhibited n type semiconductor and still had good protection,when the Cl~- concentration increased to 1.00mol/L.The donar density of passive film increased with the increasing of Cl~-concentration.
The electrochemical behavior of a high nitrogen stainless steel(HNSS)in 0.5mol/L NaOH solution with different NaCl concentrations was investigated by means of potentiodynamic polarization curves,electrochemical impendence spectrum,current-time transient and Mott-Schottky curves.The results show that the HNSS had good corrosion resistance,and the potentiodynamic polarization curves of the HNSS exhibited anodic passivation in 0.5mol/L NaOH solution containing Cl~-.The concentration of Cl~- had no remarkable effects on pitting potential.The passive current density of the HNSS increased with the increase of Cl~- concentration.The passive film formed on the surface of the HNSS exhibited n type semiconductor and still had good protection,when the Cl~- concentration increased to 1.00mol/L.The donar density of passive film increased with the increasing of Cl~-concentration.
引文
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[22]MACDONALD D D,MACDONALD M U.Theory of steady-state passive films[J].Journal of the Electrochemical Society,1990,137(8):2395-2402.
[23]MACDONALD D D,BIAGGIO S R,SONG H.Steady-state passive films.Interfacial kinetic effects and diagnostic criteria[J].Journal of the Electrochemical Society,1992,139(1):170-177.
[24]MACDONALD D D.Point defect model for the passive state[J].Journal of the Electrochemical Society,1992,12(12):3434-3449.
[25]HAKIKI N E,BOUNDIN S,RONDOT B.The electronic structure of passive films formed on stainless steel[J].Corrosion Science,1995,37(11):1809-1822.
[26]DEAN M H,STIMMING U.The electronic properties of disordered passive films[J].Corrosion Science,1989,29(2):199-211.
[27]TSUCHIYA H,FUJIMOTO S,CHIHARA O,et al.Semiconductive behavior of passive films formed on pure Cr and Fe-Cr alloys in sulfuric acid solution[J].Electrochimica Acta,2002,47(27):4357-4366.
[28]SATO N.Toward a more fundamental understanding of corrosion processes[J].Corrosion,1989,45(5):354-368.
[29]CHO E A,AHN S J,KWON H S.Effects of EDTA on the electronic properties of passive film on Fe-20Cr in pH 8.5buffer solution[J].Electrochimica Acta,2005,50(16):3383-3389.
[30]CARMEZIM M J,SIMES A M,MONTEMOR M F.Capacitance behaviour of passive films on ferritic and austenitic stainless steel[J].Corrosion Science,2005,47(3):581-591.
[2]QIAO Y X,ZHENG Y G,KE W,et al.Electrochemical behaviour of high nitrogen stainless steel in acidic solutions[J].Corrosion Science,2009,51(5):979-986.
[3]LI H B,JIANG Z H,ZHANG Z R,et al.Mechanical properties of nickel free high nitrogen austenitic stainless steels[J].Journal of Iron and Steel Research International,2007,14(5):330-334.
[4]GALVELE J R,TORRESI R M,CARRANZA R M.Passivity breakdown,its relation to pitting and stresscorrosion-cracking processes[J].Corrosion Science,1990,31:563-571.
[5]POONGUZHALI A,ANITA T,SIVAIBHARASI N,et al.Effect of nitrogen content on the tensile and stress corrosion cracking behavior of AISI type 316LN stainless steels[J].Transactions of the Indian Institute of Metals,2014,67(2):177-184.
[6]SPEIDEL H J C,SPEIDEL M O.Nickel and chromium-based high nitrogen alloys[J].Materials&Manufacturing Processes,2004,19(1):95-109.
[7]QIAO Y X,CUI J,LI H B,et al.Passivity and semiconducting behavior of a high nitrogen stainless steel in acidic NaCl solution[J].Advances in Materials Science and Engineering,2016,6065481.
[8]GRABKE H J.The role of nitrogen in the corrosion of iron and steels[J].ISIJ International,1996,36(7):777-786.
[9]MOHAMMED R,REDDY G M,RAO K S.Microstructure and pitting corrosion of shielded metal arc welded high nitrogen stainless steel[J].Defence Technology,2015,11(3):237-243.
[10]SINGH V B,RAY M.The electrochemical behaviour of nitrogen-containing austenitic stainless steel in methanolic solution[J].Journal of Materials Science,2007,42(19):8279-8286.
[11]FU Y,WU X,HAN E H,et al.Effects of nitrogen on the passivation of nickel-free high nitrogen and manganese stainless steels in acidic chloride solutions[J].Electrochimica Acta,2009,54(16):4005-4014.
[12]AHN S J,KWON H S,MACDONALD D D.Diffusivity of point defects in the passive film on Fe[J].Journal of Electroanalytical Chemistry,2005,579(2):311-319.
[13]SIKORA E,MACDONALD D D.Nature of the passive film on nickel[J].Electrochimica Acta,2002,48(1):69-77.
[14]FU Y,WU X Q,HAN E H,et al.Effects of cold work and sensitization treatment on the corrosion resistance of high nitrogen stainless steel in chloride solutions[J].Electrochimica Acta,2009,54(5):1613-1629.
[15]CARNOT A,FRATEUR I,ZANNA S,et al.Corrosion mechanisms of steel concrete moulds in contact with a demoulding agent studied by EIS and XPS[J].Corrosion Science,2003,45(11):2513-2524.
[16]JEYAPRABHA C,SATHIYANARAYANAN S,VENKATACHARI G.Influence of halide ions on the adsorption of diphenylamine on iron in 0.5 M H2SO4solutions[J].Electrochimica Acta,2006,51(19):4080-4088.
[17]LIU C T,WU J K.Influence of pH on the passivation behavior of 254SMO stainless steel in 3.5%NaCl solution[J].Corrosion Science,2007,49(5):2198-2209.
[18]GOODLET G,FATY S,CARDOSO S,et al.The electronic properties of sputtered chromium and iron oxide films[J].Corrosion Science,2004,46(6):1479-1499.
[19]CHAO C Y,LIN L F,MACDONALD D D.A point defect model for anodic passive films I:film growth kinetics[J].Journal of the Electrochemical Society,1981,128(6):1187-1194.
[20]LIN L F,CHAO C Y,MACDONALD D D.Point defect model for anodic passive films II:chemical breakdown and pit initiation[J].Journal of the Electrochemical Society,1981,128(6):1194-1198.
[21]CHAO C Y,LIN L F,MACDONALD D D.Point defect model for anodic passive films III:impedance response[J].Journal of the Electrochemical Society,1982,129(8):1874-1879.
[22]MACDONALD D D,MACDONALD M U.Theory of steady-state passive films[J].Journal of the Electrochemical Society,1990,137(8):2395-2402.
[23]MACDONALD D D,BIAGGIO S R,SONG H.Steady-state passive films.Interfacial kinetic effects and diagnostic criteria[J].Journal of the Electrochemical Society,1992,139(1):170-177.
[24]MACDONALD D D.Point defect model for the passive state[J].Journal of the Electrochemical Society,1992,12(12):3434-3449.
[25]HAKIKI N E,BOUNDIN S,RONDOT B.The electronic structure of passive films formed on stainless steel[J].Corrosion Science,1995,37(11):1809-1822.
[26]DEAN M H,STIMMING U.The electronic properties of disordered passive films[J].Corrosion Science,1989,29(2):199-211.
[27]TSUCHIYA H,FUJIMOTO S,CHIHARA O,et al.Semiconductive behavior of passive films formed on pure Cr and Fe-Cr alloys in sulfuric acid solution[J].Electrochimica Acta,2002,47(27):4357-4366.
[28]SATO N.Toward a more fundamental understanding of corrosion processes[J].Corrosion,1989,45(5):354-368.
[29]CHO E A,AHN S J,KWON H S.Effects of EDTA on the electronic properties of passive film on Fe-20Cr in pH 8.5buffer solution[J].Electrochimica Acta,2005,50(16):3383-3389.
[30]CARMEZIM M J,SIMES A M,MONTEMOR M F.Capacitance behaviour of passive films on ferritic and austenitic stainless steel[J].Corrosion Science,2005,47(3):581-591.