金属学报  2004, Vol. 40 Issue (2): 202-206

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Zn在模拟酸雨溶液中及其液膜下的腐蚀

安百刚;张学元;韩恩厚;李洪锡

中国科学院金属研究所金属腐蚀与防护国家重点实验室; 沈阳 110016

Corrosion of Zinc in Simulated Acid Rain Solution and Under Thin Electrolyte Layer Formed by Simulated Acid Rain Solution

AN Baigang; ZHANG Xueyuan; HAN Enhou; LI Hongxi

State Key Laboratory for Corrosion and Protection; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110016

安百刚; 张学元; 韩恩厚; 李洪锡 . Zn在模拟酸雨溶液中及其液膜下的腐蚀[J]. 金属学报, 2004, 40(2): 202-206 .
, , , . Corrosion of Zinc in Simulated Acid Rain Solution and Under Thin Electrolyte Layer Formed by Simulated Acid Rain Solution[J]. Acta Metall Sin, 2004, 40(2): 202-206 .

摘要 参考文献 相关文章 Metrics 全文: PDF(6119 KB)   摘要: 利用可控液膜厚度的闭塞电解池, 研究了Zn在模拟酸雨本体溶液, 及薄液膜下的腐蚀行为. 在pH值为2.4--3.8的模拟酸雨本体溶液中, Zn的阻抗谱由高频容抗和低频感抗构成, Zn的腐蚀受电荷传递过程控制. Zn的腐蚀速率和腐蚀电位都随着溶液pH值降低而升高. 在较低pH值(2.4和2.7)的溶液中, 由于较强的析氢过程产生表面吸附的氢气泡, 使气泡周边的腐蚀重于Zn表面的其它区域, 而使表面形成了明显的环形腐蚀痕迹. 在薄层液膜下, 随着液膜的减薄, Zn的腐蚀过程发生变化, 当液膜减至100 μm以下时, 低频感抗为一扩散特征的Warburg阻抗代替, Zn的腐蚀控制步骤由电荷传递控制转由电荷传递和物质扩散混合控制. 研究结果表明, 液膜的减薄抑制了Zn腐蚀的阴极过程, Zn的腐蚀速率也随着液膜的减薄而降低. 关键词 ： Zn,  酸雨腐蚀,  液膜      Abstract：The corrosion behaviors of zinc in bulk simulated acid solution and under thin electrolyte layer were studied with an occluded cell which can control the thickness of electrolyte layer. In the bulk simulated acid rain solution with pH value 2.4--3.8, the electrochemical impedance spectroscopy of zinc consists of a capacitive loop in high frequency and an inductive loop in low frequency, the control step for corrosion of zinc is charge transfer process. The corrosion rate and corrosion potential of zinc increase with decreasing pH value of solution. When pH of solution was lower (2.4 and 2.7), the hydrogen bubble absorbed on the surface of zinc was formed due to strong hydrogen process, which made more severely corrosion of zinc around bubble than the other surface of zinc, therefore, the circle trace was formed on the surface of zinc. Under thin electrolyte layer, the corrosion process of zinc changed with thinning electrolyte layer, when the thickness of electrolyte was no more than 100 μm, the control step for corrosion of zinc is a mixed process consisted of charge transfer and diffusion, and the cathodic processes are inhibited and the corrosion rate of zinc decreases with decreasing the thickness of electrolyte layer. Key words： zinc    acid rain corrosion    electrolyte layer 收稿日期: 2002-09-19      ZTFLH:  TG174   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 安百刚 张学元 韩恩厚 李洪锡 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2004/V40/I2/202 [1] Lipfert F W. Mater Perform, 1987; 26(7) : 12 [2] Falk T, Svensson J-E, Johansson L-G. J Electrochem Soc, 1998; 145: 39 [3] Graedel T E. J Electrochem Soc, 1989; 136: 193c [4] Ligier V, Wery M, Hihn J-Y, Faucheu J, Tachez M. Corros Sci, 1999; 41: 1139 [5] Svensson J-E, Johansson L-G. Corros Sci, 1996; 38: 2225 [6] Magaino S. Electrochim Acta, 1997; 42: 377 [7] Magaino S, Soga M, Sobue K, Kawaguchi A, Ishida N, Imai H. Electrochim Acta, 1999; 44: 4307 [8] Keddam M, Hugotlegoff A, Takenouti H, Thierry D, Arevalo M C. Corros Sci, 1992; 33: 1243 [9] Li G Q, Zhang L, Su N, Lin X Q. Environ Sci Technol, 1996; 15(5) : 35(李桂清,张玲,苏娜,林学勤.环境科学技术,1996;15(5) :35) [10] Zhang X Y, Ke K, Du Y L. J Chin Soc Corros Protect, 2001: 21: 117(张学元,柯克,杜元龙.中国腐蚀与防护学报,2001;21:117) [11] Brown D S, Farr J P G, Hampson N A, Larkin D, Lewis C. J Electroanal Chem, 1968; 17: 421 [12] Caswell P, Hampson N A, Larkin D. J Electroanal Chem, 1969; 20: 335 [13] Graedel T E. J Electrochem Soc, 1989; 136: 193C [14] Sziraki L, Cziraki A, Gerocs I, Vertesy Z, Kiss L. Electrochim Acta, 1998; 43: 175 [1] 卢楠楠, 郭以沫, 杨树林, 梁静静, 周亦胄, 孙晓峰, 李金国. 激光增材修复单晶高温合金的热裂纹形成机制[J]. 金属学报, 2023, 59(9): 1243-1252. [2] 王宗谱, 王卫国, Rohrer Gregory S, 陈松, 洪丽华, 林燕, 冯小铮, 任帅, 周邦新. 不同温度轧制Al-Zn-Mg-Cu合金再结晶后的{111}/{111}近奇异晶界[J]. 金属学报, 2023, 59(7): 947-960. [3] 娄峰, 刘轲, 刘金学, 董含武, 李淑波, 杜文博. 轧制态Mg-xZn-0.5Er合金板材组织及室温成形性能[J]. 金属学报, 2023, 59(11): 1439-1447. [4] 袁波, 郭明星, 韩少杰, 张济山, 庄林忠. 添加3%Zn对Al-Mg-Si-Cu合金非等温时效析出行为的影响[J]. 金属学报, 2022, 58(3): 345-354. [5] 朱亮, 郭明星, 袁波, 庄林忠, 张济山. 时效路径对Al-0.7Mg-0.5Si-0.2Cu-0.5Zn合金沉淀析出行为的影响[J]. 金属学报, 2020, 56(7): 997-1006. [6] 刘耀鸿,王朝辉,刘轲,李淑波,杜文博. Er对Mg-5Zn-xEr镁合金热裂敏感性的影响[J]. 金属学报, 2019, 55(3): 389-398. [7] 朱上,李志辉,闫丽珍,李锡武,张永安,熊柏青. Zn添加对预时效态Al-Mg-Si-Cu合金自然时效和烘烤硬化性的影响[J]. 金属学报, 2019, 55(11): 1395-1406. [8] 张玉圣, 王友彬, 李纯民, 周秉涛, 程珂珂, 韦悦周. 6061铝合金表面ZnAl-LDHs层的制备及其耐腐蚀性能[J]. 金属学报, 2018, 54(10): 1417-1427. [9] 冯迪, 张新明, 陈洪美, 金云学, 王国迎. 非等温回归再时效对Al-8Zn-2Mg-2Cu合金厚板组织及性能的影响[J]. 金属学报, 2018, 54(1): 100-108. [10] 崔荣华, 王歆钰, 董正超, 仲崇贵. Mg1-xZnx合金的弹性和热力学性质的第一性原理研究[J]. 金属学报, 2017, 53(9): 1133-1139. [11] 陈懿, 郭明星, 易龙, 袁波, 李高洁, 庄林忠, 张济山. 新型Al-Mg-Si-Cu-Zn合金板材组织、织构和性能的优化调控[J]. 金属学报, 2017, 53(8): 907-917. [12] 周野,毛萍莉,王志,刘正,王峰. Mg-7Zn-xCu-0.6Zr合金热裂行为的研究[J]. 金属学报, 2017, 53(7): 851-860. [13] 尚秀玲,张波,柯伟. 富Sb相对锌合金在近中性和酸性溶液中耐蚀性的影响[J]. 金属学报, 2017, 53(3): 351-357. [14] 奚廷斐, 魏利娜, 刘婧, 刘小丽, 甄珍, 郑玉峰. 镁合金全降解血管支架研究进展[J]. 金属学报, 2017, 53(10): 1153-1167. [15] 李振亮,刘飞,袁爱萍,段宝玉,李晓伟,李一鸣. 轧制变形对喷射沉积含Nd镁合金织构及LPSO相的影响*[J]. 金属学报, 2016, 52(8): 938-944. Viewed Full text Abstract Cited   Shared      Discussed