应用极化曲线法和电化学阻抗技术,结合扫描电子显微镜方法,测试钢筋在模拟混凝土孔隙液中的钝化与去钝化行为,以及溶液pH值对钢筋电化学腐蚀行为的影响作用.结果表明,钢筋在pH值为12.50的模拟液中处于钝态,随着溶液pH值的降低,钢筋的耐蚀性下降.钢筋表面去钝化发生腐蚀的临界PH值在11.12-11.05范围内.
参考文献
| [1] | Kumar V .[J].Corrosion Reviews,1988,16(04):317-358. |
| [2] | Montemor M F;Simoes A M P;Ferreira M G S .[J].Cement and Concrete Composites,2003,25(4-5):491-502. |
| [3] | Hope B B;Ip A K C .[J].ACI Materials Journal,1987,84(02):306-314. |
| [4] | 杜荣归,刘玉,林昌健.氯离子对钢筋腐蚀机理的影响及其研究进展[J].材料保护,2006(06):45-50. |
| [5] | M. Moreno;W. Morris;M.G. Alvarez;G.S. Duffo .Corrosion of reinforcing steel in simulated concrete pore solutions Effect of carbonation and chloride content[J].Corrosion Science,2004(11):2681-2699. |
| [6] | Bruno Huet;Valerie L'Hostis;Frederic Miserque;Hassane Idrissi .Electrochemical behavior of mild steel in concrete: Influence of pH and carbonate content of concrete pore solution[J].Electrochimica Acta,2005(1):172-180. |
| [7] | Al-Kharafi FM.;Ateya BG.;Abdallah RM. .Electrochemical behaviour of low carbon steel in concentrated carbonate chloride brines[J].Journal of Applied Electrochemistry,2002(12):1363-1370. |
| [8] | 贾红梅,阎贵平,闫光杰.混凝土中钢筋锈蚀的研究[J].中国安全科学学报,2005(05):56-59. |
| [9] | Kitowski C J;Wheat H G .[J].Corrosion,1997,53(03):216-226. |
| [10] | 曹楚南.腐蚀电化学[M].北京:化学工业出版社,1990:112. |
| [11] | Hamadou L;Kadri A;Benbrahim N .Characterisation of passive films formed on low carbon steel in borate buffer solution (pH 9.2) by electrochemical impedance spectroscopy[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2005(5):1510-1519. |
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