期刊
ELECTROCHIMICA ACTA
卷 54, 期 16, 页码 4067-4072出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2009.02.046
关键词
Reinforcing steel; Localized corrosion; Simulated concrete pore solution; Potential distribution; Scanning micro-reference electrode technique
资金
- National Natural Science Foundation of China [20473066,50731004]
- National Key Technology RD Program [2007BAB27B04]
The scanning micro-reference electrode (SMRE) technique was used to study the corrosion behavior of reinforcing steel in simulated concrete pore (SCP) solutions with different pH values. The early stage as well as the propagation of the localized corrosion of reinforcing steel in different solutions was explored. The results indicated that the potential distribution on the reinforcing steel surface changed in home-ostasis and the steel remained passive in the pure simulated concrete pore solution. The solution pH had a significant effect on the localized corrosion of reinforcing steel, and the critical pH value for localized corrosion of reinforcing steel in SCP solutions was between 11.46 and 11.31. (C) 2009 Elsevier Ltd. All rights reserved.
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