目前,关于高碱性环境下电化学噪声方面的研究报道较少.在饱和Ca(OH)2溶液中对钢筋预钝化,以含有Cl-和NO2-的Ca(OH)2饱和溶液模拟受污染的混凝土孔隙液环境,在其中采用微细石英针对钢筋钝化膜施加定量机械冲击损伤.基于电化学噪声和高速数据采集技术,通过捕捉钝化膜破裂/修复过程中的电化学噪声信号,研究高碱性环境下,C1-及缓蚀剂NO2-对钢筋表面钝化膜特性和点蚀形核和修复过程的影响.结果表明:在被C1-污染的模拟孔隙液中,再生钝化膜的缺陷密度高于原生钝化膜,导致亚稳态点蚀在损伤区反复发生,且C1-浓度增加会延长蚀点寿命;加入NO2-会降低钝化膜的缺陷密度,加速钝化膜再生,提高了钝化膜的保护性.
参考文献
| [1] | ISABEL GALAN;CARMEN ANDRADE;PEDRO MORA.Sequestration of CO2 by Concrete Carbonation[J].Environmental Science & Technology: ES&T,20108(8):3181-3186. |
| [2] | Ze Hua Dong;Wei Shi;Guo An Zhang;Xing Peng Guo.The role of inhibitors on the repassivation of pitting corrosion of carbon steel in synthetic carbonated concrete pore solution[J].Electrochimica Acta,201117(17):5890-5897. |
| [3] | Chong Cao;Moe M.S. Cheung.Non-uniform rust expansion for chloride-induced pitting corrosion in RC structures[J].Construction and Building Materials,2014Jan.(Jan.):75-81. |
| [4] | 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,200411(11):2681-2699. |
| [5] | Ze Hua Dong;Wei Shi;Xing Peng Guo.Initiation and repassivation of pitting corrosion of carbon steel in carbonated concrete pore solution[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,20114(4):1322-1330. |
| [6] | 董泽华;朱涛;石维;郭兴蓬.烯胺阻锈剂对钢筋在模拟碳化混凝土孔隙液中的点蚀抑制[J].物理化学学报,2011(4):905-912. |
| [7] | Cheng YF.;Yang C.;Luo JL..Determination of the diffusivity of point defects in passive films on carbon steel[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,20021/2(1/2):169-173. |
| [8] | 陈长风;姜瑞景;张国安;郑树起.双极性半导体钝化膜空间电荷电容分析[J].物理化学学报,2009(3):463-469. |
| [9] | 陈长风;姜瑞景;钱进森;郑树启.双极性半导体钝化膜空间电荷电容分析（Ⅱ）[J].物理化学学报,2009(6):1213-1218. |
| [10] | Shahzma J. Jaffer;Carolyn M. Hansson.Chloride-induced corrosion products of steel in cracked-concrete subjected to different loading conditions[J].Cement and Concrete Research,20092(2):116-125. |
| [11] | On the penetration of corrosion products from reinforcing steel into concrete due to chloride-induced corrosion[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,20107(7):2469. |
| [12] | Ueli Angst;Anders Ronnquist;Bernhard Elsener;Claus K. Larsen;Oystein Vennesland.Probabilistic considerations on the effect of specimen size on the critical chloride content in reinforced concrete[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,20111(1):177-187. |
| [13] | Single particle impingement current transients for prediction of erosion-enhanced corrosion on 304 stainless steel[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,20107(7):2331. |
| [14] | 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,20055(5):1510-1519. |
| [15] | B. T. Lu;J. L. Luo;F. Mohammadi;K. Wang;X. M. Wan.Correlation between repassivation kinetics and corrosion rate over a passive surface in flowing slurry[J].Electrochimica Acta,200823(23):7022-7031. |
| [16] | Y.M. Zeng;J.L. Luo;P.R. Norton.A study of semiconducting properties of hydrogen containing passive films[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,20041/2(1/2):116-124. |
| [17] | Y. F. Cheng;J. L. Luo;M. Wilmott.Spectral analysis of electrochemical noise with different transient shapes[J].Electrochimica Acta,200011(11):1763-1771. |
| [18] | P. Garces;P. Saura;A. Mendez;E. Zornoza;C. Andrade.Effect of nitrite in corrosion of reinforcing steel in neutral and acid solutions simulating the electrolytic environments of micropores of concrete in the propagation period[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,20082(2):498-509. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%