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51313-02708-Study of protective iron carbonate layer dissolution in CO2 corrosion environment

Product Number: 51313-02708-SG
ISBN: 02708 2013 CP
Author: Yang Yang
Publication Date: 2013
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$20.00
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As a corrosion product iron carbonate can protect underlying steel from further corrosion. Chemical dissolution of a protective iron carbonate layer was tested in a glass cell with a rotating cylinder electrode. It was observed that corrosion rate of the underlying steel increased as a consequence of the dissolution of protective iron carbonate layer due to exposure to an under-saturated solution. With the capability of in situ measurement of mass change on the surface the electrochemical quartz crystal microbalance (EQCM) was also employed to directly monitor the iron carbonate dissolution rate. EQCM results indicated that iron carbonate dissolution was not affected by mass transfer. A mechanism of iron carbonate dissolution was proposed and the kinetics expression was obtained.

As a corrosion product iron carbonate can protect underlying steel from further corrosion. Chemical dissolution of a protective iron carbonate layer was tested in a glass cell with a rotating cylinder electrode. It was observed that corrosion rate of the underlying steel increased as a consequence of the dissolution of protective iron carbonate layer due to exposure to an under-saturated solution. With the capability of in situ measurement of mass change on the surface the electrochemical quartz crystal microbalance (EQCM) was also employed to directly monitor the iron carbonate dissolution rate. EQCM results indicated that iron carbonate dissolution was not affected by mass transfer. A mechanism of iron carbonate dissolution was proposed and the kinetics expression was obtained.

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