循环盐雾环境中碳纤维复合材料-6082铝合金螺栓连接结构中铝合金的腐蚀行为  

Corrosion Behavior of Al Alloy of Carbon-Fiber-Composite and 6082 Aluminum Alloy Bolt Connection Structure in Circulating Salt Spray Environment

作　　者：孙晓光 陈志坚 王睿 周学杰 吴军 SUN Xiaoguang;CHEN Zhijian;WANG Rui;ZHOU Xuejie;WU Jun(CRRC Qingdao Sifang Co.,Ltd.,Qingdao 266111,China;Wuhan Research Institute of Materials Protection,Wuhan 430030,China;Wuhan Materials Corrosion National Observation and Research Station,Wuhan 430030,China;State Key Laboratory of High-Speed Maglev Transportation Technology,Qingdao 266111,China)

机构地区：[1]中车青岛四方机车车辆股份有限公司,青岛266111 [2]武汉材料保护研究所有限公司,武汉430030 [3]湖北武汉大气淡水环境材料腐蚀国家野外观测科学研究站,武汉430030 [4]高速磁浮运载技术全国重点实验室,青岛266111

出　　处：《腐蚀与防护》2024年第4期26-32,共7页Corrosion & Protection

基　　金：中车重点科研项目(2021CDB292);国家重点研发计划(2020YFE0204900)。

摘　　要：采用循环盐雾加速腐蚀试验,通过腐蚀速率测试、腐蚀形貌观察和电化学方法研究了碳纤维复合材料-6082铝合金螺栓连接结构中6082铝合金的腐蚀行为。结果表明:与碳纤维复合材料连接后,6082铝合金的腐蚀速率是未连接试样的13倍,铝合金与裸露的碳纤维接触处的腐蚀最严重。随着腐蚀时间的延长,铝合金的腐蚀电位逐渐下降,腐蚀电流密度增大,耐蚀性减弱,铝合金表面的腐蚀产物逐渐形成致密和疏松的双层结构。The corrosion behavior of 6082 aluminum alloy in the bolt connection structure of carbon fiber composite material-6082 aluminum alloy was studied using cyclic salt spray accelerated corrosion test,corrosion rate testing,corrosion morphology observation and electrochemical methods.The results show that after connection with carbon fiber composite materials,the coupling corrosion rate of 6082 aluminum alloy was 13 times higher than that of non connection 6082 aluminum alloy,and the corrosion at the contact between aluminum alloy and carbon fibers was the most severe.As the corrosion time prolonged,the corrosion potential of aluminum alloy gradually decreased,the corrosion current density increased,the corrosion resistance weakened,and the corrosion products on the surface of aluminum alloy gradually formed a dense and loose double-layer structure.

关 键 词：铝合金 碳纤维复合材料 螺栓连接 

分 类 号：TG174.4[金属学及工艺—金属表面处理]