海洋环境下服役飞机铝合金零件腐蚀失效分析

黄领才; 谷 岸; 刘慧丛; 姜同敏

海洋环境下服役飞机铝合金零件腐蚀失效分析

1.
北京航空航天大学工程系统工程系, 北京 100191
2. 北京航空航天大学材料科学与工程学院, 北京 100191

详细信息

作者简介:
黄领才(1966-),男,黑龙江宝清人,博士生,liuhc@buaa.edu.cn.

中图分类号: TG 172.3
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- 被引次数: 0
出版历程
- 收稿日期: 2007-10-23
- 网络出版日期: 2008-10-31

Corrosion failure of aluminum alloy parts on airplane used in marine environment

1.
Dept. of System Engineering of Engineering Technology, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2. School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 对出口旅游观光用飞机的铝合金零件在热带海洋气候环境服役条件下所发生的腐蚀问题进行了分析探讨.通过铝合金零件发生腐蚀的微观形貌和腐蚀产物成分等的分析,结合飞机所处环境条件,讨论了铝合金零件的腐蚀类型和发生剥蚀的过程及原因,并分析了其发生剥蚀的机理.认为海洋环境中的氯离子是造成沿海飞机铝合金零件腐蚀的外因,而内因是飞机零件的表面防腐蚀设计与防护不足,腐蚀的发展过程是铝合金零件表面点腐蚀、晶间腐蚀直至剥蚀,腐蚀产物造成的应力是促进分层剥离的原因.针对这种表面腐蚀防护问题,提出了相应的改进措施.
- 服役飞机 /
- 铝合金零件 /
- 腐蚀失效 /
- 机理
Abstract: Corrosion of aluminum alloy parts on airplane used in marine environment for tour was discussed. Along with the research of microcosmic image and corrosion product component of aluminum alloy parts on airplane, and considering the environmental condition used for the airplane, corrosion style, corrosion process and corrosion mechanism of aluminum alloy parts were researched. Results show that corrosion cause for aluminum alloy parts is residual seawater including chlorine ion from marine environment in the annular and plane clearance between constructional rivet and airplane parts, and insufficient protection for surface of airplane parts. Pit immersed firstly on the surface of aluminum alloy parts, and subsequently, intergranular corrosion and exfoliation occurred, stress due to the corrosion production accelerated delamination and flake away. Some suggestions were given to improve the anti-corrosion ability for aluminum alloy parts used on airplane, which include eliminating and filling in the constructional clearance.
- service aircraft /
- aluminum alloy components /
- corrosion fatigue /
- mechanisms

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参考文献(1)

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