基于电偶腐蚀仿真的铝/钛合金在不同浓度酸性NaCl溶液中与水介质中的当量折算系数

详细信息    查看全文 | 推荐本文 |

英文篇名：Equivalent Conversion Coefficient of Aluminum/Titanium Alloy Between Acidic NaCl Solution with Different Concentration and Water Based on Galvanic Corrosion Simulation 作者：卞贵学 ; 陈跃良 ; 张勇 ; 王安东 ; 王哲夫 英文作者：BIAN Guixue;CHEN Yueliang;ZHANG Yong;WANG ANDong;WANG Zhefu;Qingdao Branch, Naval Aeronautical University; 关键词：2A12铝合金 ; NaCl溶液 ; 腐蚀仿真 ; 电偶腐蚀 ; 当量折算 英文关键词：2A12 aluminum alloy;;NaCl solution;;corrosion simulation;;galvanic corrosion;;equivalent conversion 中文刊名：CLDB 英文刊名：Materials Reports 机构：海军航空大学青岛校区; 出版日期：2019-07-18 出版单位：材料导报 年：2019 期：v.33 基金：国家自然科学基金(51375490)~~ 语种：中文; 页：CLDB201916023 页数：7 CN：16 ISSN：50-1078/TB 分类号：119-125

摘要

以飞机常用材料2A12铝合金和TA15钛合金为研究对象,对两种材料在不同NaCl浓度和不同pH值溶液中的极化曲线和电偶电流进行测量,探究了铝/钛合金在不同NaCl浓度和不同pH值溶液中发生电偶腐蚀时与水介质的当量折算关系。将极化曲线作为边界条件建立电偶腐蚀预测模型,通过该模型计算得到两种金属材料在不同NaCl浓度和不同pH值溶液中的电偶电流并与电化学试验测量结果进行对比分析。结果表明,铝合金的自腐蚀电位主要受溶液中NaCl浓度的影响,溶液pH值的大小对自腐蚀电位的影响不大,但对自腐蚀电流密度影响较为显著。不同NaCl浓度和不同pH值溶液中的模型仿真结果与电化学试验结果相吻合,通过模型计算得到了不同NaCl浓度和不同pH值溶液中2A12-T4铝合金和TA15钛合金发生电偶腐蚀时与水介质中的折算系数。
        Polarization curves and current of galvanic corrosion of 2A12 aluminum alloy and TA15 titanium alloy in solution with different NaCl concentrations and pH value were measured by electrochemical test. Conversion coefficient of galvanic corrosion between TA15/2A12 in different concentrations and pH of NaCl solution and aqueous was investigated. A galvanic corrosion simulation model was established by polarization curves of boundary condition in different concentrations NaCl solution with different pH. The galvanic corrosion current of two materials for corrosion simulation model was compared with the electrochemical test. The results showed that the self-corrosion potential of aluminum alloy was mainly affec-ted by the NaCl concentration, but it was less affected by the pH values which had a significant effect on the self-corrosion current. The simulation results agree with the electrochemical test results. Besides, the conversion factors between galvanic corrosion of 2A12-T4 aluminum alloy and TA15 titanium alloy in different NaCl concentrations and pH values solutions and self-corrosion in water medium were obtained by simulation.

引文

1 Liu W T,Li Y M,Chen Q Z,et al.Journal of Beijing University of Aeronautics and Astronautics,2002,28(1),109 (in Chinese).刘文珽,李玉梅,陈群志,等.北京航空航天大学学报,2002,28(1),109.
    2 Song E P,Liu W T,Yang X.Acta Aeronautica et Astronautica Sinica,2006,27(4),646 (in Chinese).宋恩鹏,刘文珽,杨旭.航空学报,2006,27(4),646.
    3 Zhang Y H,Lv G Z,Chen Y L.Acta Aeronautica et Astronautica Sinica,2005,26(6),779 (in Chinese).张有宏,吕国志,陈跃良.航空学报,2005,26(6),779.
    4 Zhou X Y.Acta Aeronautica et Astronautica Sinica,1996,17(5),613 (in Chinese).周希沅.航空学报,1996,17(5),613.
    5 Chen Y L,Duan C M,Jin P.Journal of Nanjing University of Aeronautics & Astronautics,1999,31(3),338 (in Chinese).陈跃良,段成美,金平.南京航空航天大学学报,1999,31(3),338.
    6 Chen Y L,Wang Z F,Bian G X,et al.Acta Aeronautica et Astronautica Sinica,2017,38(3),420 (in Chinese).陈跃良,王哲夫,卞贵学,等.航空学报,2017,38(3),420.
    7 Liu W T,He X F,et al.Corrosion/aging control and prolonging the ca-lendar life technology of aircraft structure,National Defense Industry Press,China,2010 (in Chinese).刘文珽,贺小帆,等.飞机结构腐蚀/老化控制与日历延寿技术,国防工业出版社,2010.
    8 Dong C F,Sheng H,An Y H,et al.Journal of University Science and Technology Beijing,2009,31(7),878 (in Chinese).董超芳,生海,安英辉,等.北京科技大学学报,2009,31(7),878.
    9 Xu H P,Liu H C,Zhu L Q.Journal of Aeronautica Materials,2010,30(4),59 (in Chinese).徐火平,刘慧丛,朱立群,等.航空材料学报,2010,30(4),59.
    10 Zhang D F,Chen Y L.Journal of Nanjing University of Aeronautics & Astronautics,2010,42(3),340 (in Chinese).张丹峰,陈跃良.南京航空航天大学学报,2010,42(3),340.
    11 Duret N.In:The 10th Conference on Titanium.Hamburg,2003,pp.2667.
    12 Zhang R,Zhang H X,Jia R L.Development and Application of Mate-rials,2013,28(4),96 (in Chinese).张睿,张慧霞,贾瑞灵.材料开发与应用,2013,28(4),96.
    13 Chang H Y,Park Y S,Hwang W S.Journal of Materials Processing Technology,2000,103(2),206.
    14 Wang L,Xuan W F,Mou X L.Surface Technology,2011,40(5),1 (in Chinese).王玲,宣卫芳,牟献良.表面技术,2011,40(5),1.
    15 Li J G.An introduction to system engineering science for corrosion control,Chemical Industry Press,China,2009 (in Chinese).李金桂.腐蚀控制系统工程学概论,化学工业出版社,2009.
    16 Cao C N.Principles of electrochemistry of corrosion,Chemical Industry Press,China,2008 (in Chinese).曹楚南.腐蚀电化学原理(第三版),化学工业出版社,2008.