Corrosion Behavior of 7A04 Aluminium Alloy in Xisha Marine Atmosphere
摘 要
通过在我国西沙典型海洋大气环境进行大气暴晒试验, 测定了7A04铝合金在西沙典型海洋大气环境中的失重曲线、进行了幂函数拟合,通过SEM, EDS和XRD对7A04铝合金腐蚀宏观表面形貌、腐蚀微观表面形貌和腐蚀产物结构进行观察和分析。结果表明, 随腐蚀时间的延长, 7A04铝合金腐蚀产物不断增多, 失重数值增加, 腐蚀失重与时间的关系呈幂函数规律(C=Atn)。最终的腐蚀产物形貌呈块状均匀分布, 主要由Al2O3, Al(OH)3和AlOOH等组成。
Abstract
The corrosion behaviors of 7A04 aluminum alloy in Xisha marine atmosphere were investigated by atmospheric exposure experiments and testing the weight loss curve, corrosion rate and power function fitting. The macro and micro surface morphology of aluminum alloy corroded and the structure of corrosion products were observed and analyzed by SEM, EDS and XRD. The results show that with testing hours prolonging, the corrosion product and mass loss increased. The relationship between corrosion loss and time accords with exponential attenuation rule as C=Atn. Surface observation reveals that the corrosion product was agglomerated and accidented. The corrosion product was mainly composed of Al2O3,Al(OH)3 and AlOOH.
中图分类号 TG172
所属栏目 试验研究
基金项目 国家自然科学基金(51131005; 51171023); 中央高校基本科研业务费专项资金(FRF-TP-11-006B)
收稿日期 2012/10/19
修改稿日期
网络出版日期
作者单位点击查看
备注李晓刚,教授,博士生导师,
引用该论文: XING Shi-bo,LI Xiao-gang,LI Li,DONG Chao-fang. Corrosion Behavior of 7A04 Aluminium Alloy in Xisha Marine Atmosphere[J]. Corrosion & Protection, 2013, 34(9): 796
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】马腾,王振尧,韩薇. 铝和铝合金的大气腐蚀[J]. 腐蚀科学与防护技术,2004,16(3):155-161.
【2】周和荣,马坚,陆启凯,等. 典型铝合金在江津自然大气环境中的腐蚀行为研究[J]. 装备环境工程,2009,6(3):10-12.
【3】曹楚南. 中国材料的自然环境腐蚀[M]. 北京:化学工业出版社,2005.
【4】柯伟. 中国工业与自然环境腐蚀调查[J]. 全面腐蚀控制,2003,17(1):1-10.
【5】董超芳,安英辉,李晓刚,等. 7A04铝合金在海洋大气环境中初期腐蚀的电化学特性[J]. 中国有色金属学报,2009,19(2):346-349.
【6】Elola A S,Otero T F,Porro A. Evolution of the pitting of aluminum exposed to the atmosphere[J]. Corrosion,1992,48(10):854-863.
【7】Graedel T E. Corrosion mechanisms for aluminum exposed to the heat atmosphere[J]. Journal of the Electrochemical Society,1989,136(4):204-212.
【8】Andreatta F,Terryn H,de Wit J H W. Corrosion behaviour of different tempers of AA7075 aluminium alloy[J]. Electrochimica Acta,2004,49:2851-2862.
【9】李劲风,郑子樵,任文达. 第二相在铝合金局部腐蚀中的作用机制[J]. 材料导报,2005,19(2):81-83.
【2】周和荣,马坚,陆启凯,等. 典型铝合金在江津自然大气环境中的腐蚀行为研究[J]. 装备环境工程,2009,6(3):10-12.
【3】曹楚南. 中国材料的自然环境腐蚀[M]. 北京:化学工业出版社,2005.
【4】柯伟. 中国工业与自然环境腐蚀调查[J]. 全面腐蚀控制,2003,17(1):1-10.
【5】董超芳,安英辉,李晓刚,等. 7A04铝合金在海洋大气环境中初期腐蚀的电化学特性[J]. 中国有色金属学报,2009,19(2):346-349.
【6】Elola A S,Otero T F,Porro A. Evolution of the pitting of aluminum exposed to the atmosphere[J]. Corrosion,1992,48(10):854-863.
【7】Graedel T E. Corrosion mechanisms for aluminum exposed to the heat atmosphere[J]. Journal of the Electrochemical Society,1989,136(4):204-212.
【8】Andreatta F,Terryn H,de Wit J H W. Corrosion behaviour of different tempers of AA7075 aluminium alloy[J]. Electrochimica Acta,2004,49:2851-2862.
【9】李劲风,郑子樵,任文达. 第二相在铝合金局部腐蚀中的作用机制[J]. 材料导报,2005,19(2):81-83.
相关信息