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Localized corrosion behaviour of reinforcement steel in simulated concrete pore solution

Zhang, Fan / Pan, Jinshan / Lin, Changjian

The correlation of localized corrosion behavior and microstructure of reinforcement steel in simulated concrete pore solutions was investigated. The SEM/EDS analysis showed that most of ferrite, minor amount of pearlite and some MnS inclusions existed on the steel surface. The SKPFM results indicated a higher corrosion tendency at the ferrite grain boundaries, pearlite grains and MnS inclusions. The EIS and electrochemical polarization measurements demonstrated the influence of pH and chloride concentration on the corrosion behavior. In situ optical observations and AFM images revealed a detail of the localized corrosion behavior, which was in good agreement with the results from the other measurements.

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Localized corrosion behaviour of reinforcement steel in simulated concrete pore solution

Zhang, Fan / Pan, Jinshan / Lin, Changjian

The correlation of localized corrosion behavior and microstructure of reinforcement steel in simulated concrete pore solutions was investigated. The SEM/EDS analysis showed that most of ferrite, minor amount of pearlite and some MnS inclusions existed on the steel surface. The SKPFM results indicated a higher corrosion tendency at the ferrite grain boundaries, pearlite grains and MnS inclusions. The EIS and electrochemical polarization measurements demonstrated the influence of pH and chloride concentration on the corrosion behavior. In situ optical observations and AFM images revealed a detail of the localized corrosion behavior, which was in good agreement with the results from the other measurements.

Localized corrosion behaviour of reinforcement steel in simulated concrete pore solution

Zhang, Fan / Pan, Jinshan / Lin, Changjian

The correlation of localized corrosion behavior and microstructure of reinforcement steel in simulated concrete pore solutions was investigated. The SEM/EDS analysis showed that most of ferrite, minor amount of pearlite and some MnS inclusions existed on the steel surface. The SKPFM results indicated a higher corrosion tendency at the ferrite grain boundaries, pearlite grains and MnS inclusions. The EIS and electrochemical polarization measurements demonstrated the influence of pH and chloride concentration on the corrosion behavior. In situ optical observations and AFM images revealed a detail of the localized corrosion behavior, which was in good agreement with the results from the other measurements.

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Title:

Localized corrosion behaviour of reinforcement steel in simulated concrete pore solution

Additional title:

Lochkorrosionsverhalten von Bewehrungsstahl in simulierter Betonporenlösung

Contributors:

Zhang, Fan (author) / Pan, Jinshan (author) / Lin, Changjian (author)

Published in:

Corrosion Science ; 51 ; 2130-2138

Publication date:

2009

Size:

9 Seiten, 9 Bilder, 2 Tabellen, 45 Quellen

ISSN:

DOI:

https://doi.org/10.1016/j.corsci.2009.05.044

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Korrosionsprüfung , Simulationsversuch , Lochkorrosion , Bewehrungsstahl , Porenbeton , Porenlösung , Mikrostruktur , Polarisationskurve , elektrochemische Impedanzspektrometrie , pH-Einfluss , Konzentrationseinfluss , Chlorid , In-Situ-Messung , optische Mikroskopie , Rasterelektronenmikroskopie , energiedispersive Spektrometrie , Rasterkraftmikroskopie , Korngrenze

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