飞机结构加速腐蚀与自然腐蚀  

Corrosion of Aircraft Structure Material in Accelerated Simulating Environment and Service Environment

作　　者：胡建军[1] 陈跃良[2] 卞贵学[1] 张勇[2] 衣林[1] 

机构地区：[1]海军航空工程学院研究生管理大队,烟台264001 [2]海军航空工程学院青岛分院,青岛266041

出　　处：《腐蚀与防护》2011年第11期900-904,共5页Corrosion & Protection

基　　金：国家自然科学基金(50675221;51075394);总装十一五预研(51327030104)

摘　　要：分析了导致海军飞机结构腐蚀的主要因素,基于飞机地面停放环境谱,对航空LY12CZ铝合金件进行了多个当量年限的加速腐蚀试验和热带海洋环境下的暴露试验;对试件表面涂层、金属基体材料腐蚀情况进行观察和测量;根据腐蚀评价指标对试验件腐蚀状况进行了分析比较。结果表明,实验室加速腐蚀结果符合飞机外场服役的腐蚀特征,而材料直接暴露在海洋环境中比外场腐蚀速度更快。对腐蚀深度和腐蚀失重进行测量,给出腐蚀深度的分布特性和加速腐蚀与自然暴露的当量关系,对失重规律进行了研究。The important factors inducing corrosion damage of navy aircrafts were analyzed. LYl2CZ specimens were tested by the accelerated corrosion testing in laboratory and exposure testing during warship cruising in tropical marine based on the spectrua of military airport ground environments. The corrosion characteristics of the coating and base material were inspected and corrosion damage dimension was measured after the accelerated corrosion and the exposure testing on ship. The results showed that the corrosion damage characteristic of the specimens in the laboratory test was consistent with that in service situations. The corrosion rate of specimens exposed to ocean environment was larger than that in out-door field. The equivalent relationship between the distribution character of the corrosion depth and accelerated corrosion to natural exposure was obtained. The law of weight loss was studied.

关 键 词：LY12CZ铝合金 加速腐蚀试验 腐蚀当量关系 飞机结构 

分 类 号：TG171[金属学及工艺—金属表面处理] V252[金属学及工艺—金属学]