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纯Cr在固态NaCl和水蒸汽协同作用下电化学腐蚀机制研究

, PP. 303-306

Keywords: 固态NaCl,纯Cr,水蒸汽,电化学阻抗谱

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Abstract:

采用电偶腐蚀测量、动电位极化曲线测量和电化学阻抗测量等技术研究了纯Cr在固态NaCl和水蒸汽协同作用下的腐蚀机制.结果表明纯Cr在该腐蚀环境中发生电化学腐蚀,而电化学腐蚀在腐蚀总量中所占的比重很小.但是,纯Cr的腐蚀是电化学腐蚀反应耦合一个前置的化学腐蚀反应的过程,即纯Cr首先与固态NaCl和水蒸汽发生化学腐蚀反应产生气态HCl,生成的气态HCl再参与电化学腐蚀反应生成H2.电化学腐蚀反应的发生促进了化学腐蚀反应的进行,从而加速了纯Cr的腐蚀

References

[1]  舒舒勇华.NaCl和水蒸汽协同作用下几种金属及其涂层的腐蚀行为研究[D].沈阳:中国科学院金属研究所,1999:23.
[2]  SShu Y H,Wang F H,Wu W T.Synergistic effect of NaCl and water vapor on the corrosion of 1Cr11Ni2W2MoV steel at 500~700℃[J].Oxid. Met.,1999,51(1-2):97.
[3]  SShu Y H,Wang F H,Wu W T.Corrosion behavior of Ti60 alloy coated with a solid NaCl deposit in O2 plus water vapor at 500~700℃[J].Oxid. Met.,1999,52:463.
[4]  SShu Y H,Wang F H,Wu W T.Corrosion behavior of pure Cr with a solid NaCl deposit in O2 plus water vapor[J].Oxid. Met.,2000,54:457.
[5]  WWang F H,Geng S,Zhu S.Corrosion behavior of a sputtered K38G nanocrystalline coating with a solid NaCl deposit in wet oxygen at 600 to 700℃[J].Oxid. Met.,2002,58:185.
[6]  WWang C,Jiang F,Wang F H.Corrosion inhibition of 304 stainless steel by nanosized Ti/Silicone coatings in an environment containing NaCl and H2O at 400~600℃[J].Oxid. Met.,2004,62:1.
[7]  LLiu L,Li Y,Zeng C L,et al.Electrochemical impedance spectroscopy(EIS)studies of the corrosion of pure Fe and Cr at 600℃ under solid NaCl deposit in H2O[J].Electrochim. Acta,2006,51:4736.
[8]  TTang Y,Liu L,Li Y,et al.Evidence for the occurrence of electrochemical reactions and their interaction with chemical reactions during the corrosion of pure Fe with solid NaCl deposit in water vapor at 600℃[J].Electrochem. Commun.,2009,12:191.
[9]  孟孟国哲.纳米化对FeCr合金电化学腐蚀行为的影响[D].沈阳:中国科学院金属研究所,2005:91.
[10]  Smith D E.Alternating current polarography of electrode processes with coupled homogeneous chemical reactions.1.Theory for systems with firstorder preceding,following,and catalytic chemical reactions[J].Anal. Chem.,1963,35:6002.

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