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Abstract

Effect of temperature on the electrochemical impedance spectroscopy for P110 steel at anodic polarized potential was investigated in simulated CO 2 saturated oil produced water. The results demonstrated that in the range from room temperature to 90 ℃, there was a critical temperature , below which a three time constant impedance spectrum was observed and above which a two time constant spectrum was shown. A reasonable explanation was given to this phenomenon in an effort to elucidate the mechanism of anodic dissolution and characteristics of CO 2 corrosion.

Publication Date

2001-02-28

Online Available Date

2001-02-28

Revised Date

2001-02-28

Received Date

2001-02-28

References

[1] PalaciosC .A ,ShadleyJ .R .CharacteristicsofcorrosionscalesonsteelsinaCO2 saturatedNaClbrine [J].Corrosion ,1991,4 7(2 ) :12 2 .

[2 ] Lijing ,et .CorrosionmechanismofsteelP110inCO2 containingsimulatedoilfieldbrine [J].JournalofChi neseSocietyforCorrosionandProtection .1999,19(5) :2 85.

[3] Arnedugstad ,LivLunde .ParametricstudyofCO2 corrosionofcarbonsteel [A].In :NACEInternational,Corrosion/ 94 [C],Houston ,Texas :NACEInternational,PublicationDivision ,1994 :1~ 16 .

[4 ] CaoChunan .OntheEquivalentCircuitsofFaradaicImpedanceofIrreversibleElectrodeReactions [J].Jour nalofChineseSocietyForCorrosionandProtection .,1990 ,10 (2 ) :159.

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