用电化学阻抗谱(EIS)研究了LY12CZ铝合金及包覆铝层后LY12CZ铝合金在0.1mol/L NaCl溶液中的腐蚀破坏过程,根据两种条件下铝合金在不同极化电位下的EIS特征.建立与之相应的电化学等效电路模型,并分析了腐蚀机理.研究表明.阳极极化过程中两种条件下铝合金的EIS主要特征类似.Nyquist图均呈现双容抗弧.在点蚀发展过程中,包覆铝层的LY12CZ铝合金的Nyquist图高,低频容抗弧半径增大,主要是因为包铝层与LY12CZ铝合金基体之间残存的氧化膜减缓了腐蚀的发展.
参考文献
| [1] | 张正,宋诗哲,墨淑芬.0.1 mol/L NaCl溶液中不同剥蚀程度LY12CZ合金的EIS特征[J].金属学报,2004(07):754-758. |
| [2] | Campestrini P;Van Westing E P M;Van Rooijen H W et al.Relation between microstructural aspects of AA2024 and its corrosion behaviour investigated using AFM scanning potential technique[J].Corrosion Science,2000,42(11):1853-1861. |
| [3] | 李劲风,郑子樵,张昭,张鉴清.铝合金剥蚀过程的电化学阻抗谱分析[J].中国腐蚀与防护学报,2005(01):48-52. |
| [4] | F. Cui;F.J. Presuel-Moreno;R.G. Ke .Experimental and Computational Evaluation of the Protection Provided by an Aluminum Cladding to AA2024-T3 Exposed at a Seacoast Environment[J].Corrosion: The Journal of Science and Engineering,2006(3):251-263. |
| [5] | Duquesnay DL;Underhill PR;Britt HJ .Fatigue failure of adhesively patched 2024-T3 and 7075-T6 clad and bare aluminium alloys[J].Fatigue & Fracture of Engineering Materials and Structures,2005(4):381-389. |
| [6] | Petroyiannis PV;Pantelakis SG;Haidemenopoulos GN .Protective role of local Al cladding against corrosion damage and hydrogen embrittlement of 2024 aluminum alloy specimens[J].Theoretical and Applied Fracture Mechanics,2005(1):70-81. |
| [7] | 赵月红,林乐耘,崔大为,孟跃辉.盐湖水中包铝对超硬铝合金基材的保护作用[J].中国腐蚀与防护学报,2006(05):286-290,294. |
| [8] | P.Campestrini;E.P.M.van Westing;J.H.W.de Wit .Influence of surface preparation on performance of chromate conversion coatings on Alclad 2024 aluminium alloy Part II: EIS investigation[J].Electrochimica Acta,2001(17):2631-2647. |
| [9] | Y. Y. Shi;Z. Zhang;J. X. Su;J. Q. Zhang .EIS study on 2024-T3 aluminum alloy corrosion in simulated acid rain under cyclic wet-dry conditions[J].Materials and Corrosion,2005(10):701-706. |
| [10] | Zheludkevich M L;Yasakau K A;Poznyak S K et al.Triazole and thiazole derivatives as corrosion inhibitors for AA2024 aluminium alloy[J].Corrosion Science,2005,47(12):3368-3383. |
| [11] | Moutarlier V;Gigandet M P;Normand B et al.EIS character isation of anodic films formed on 2024 aluminium alloy in sulphuric acid containing molybdate or permanganate species[J].Cortes Science,2005,47(04):937-951. |
| [12] | 安百刚,张学元,宋诗哲,李洪锡,韩恩厚.LY12铝合金在模拟酸雨溶液中的阻抗谱研究[J].中国腐蚀与防护学报,2003(03):167-170. |
| [13] | 林钢;林慧国;赵玉涛.铝合金应用手册[M].北京:机械工业出版社,2006 |
| [14] | 宋诗哲;唐子龙 .工业纯铝在3 5%NaCl溶液中的电化学阻抗谱分析[J].中国腐蚀与防护学报,1996,16(02):127-132. |
| [15] | 甘株,王云.微观结构对LY12铝合金剥蚀的影响[J].腐蚀科学与防护技术,1995(03):208. |
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%