摘要
为改善2024铝合金在富含Cl-的流动海水中的耐腐蚀性能,采用等离子体增强化学气相沉积技术,在2024铝合金表面沉积掺硅类金刚石(Si-DLC)薄膜,利用扫描电镜和电化学工作站对流动海水环境下冲刷不同时间的铝合金及Si-DLC薄膜进行表面形貌和耐蚀性能进行研究,并对相关腐蚀机理进行了讨论。结果表明,冲刷过程中未沉积Si-DLC的铝合金发生严重的腐蚀,而沉积了Si-DLC薄膜的试样并未发生严重腐蚀,薄膜发生少量裂纹,同时生成了硅氧化物保护铝合金。在本实验中,沉积了Si-DLC薄膜的2024铝合金的耐蚀性能明显好于2024铝合金。
To improve the corrosion resistance of 2024 aluminum alloy in Cl-flowing seawater,silicon-doped diamond-like carbon(Si-DLC)films were deposited on the surface of 2024 aluminum alloy by plasma-enhanced chemical vapor deposition.The surface morphology and corrosion resistance of aluminum alloy and Si-DLC film scoured for different time in the flowing seawater environment were studied by scanning electron microscopy and electrochemical workstation,and the related corrosion mechanism was discussed.The results show that the aluminum alloy without deposition of Si-DLC has serious corrosion during the scouring process,while the sample deposited with Si-DLC film has no serious corrosion,and a small number of cracks have occurred in the film.At the same time,the silicon oxide protective aluminum alloy is formed.In this experiment,the corrosion resistance of 2024 aluminum alloy deposited with Si-DLC film is significantly better than that of 2024 aluminum alloy.
作者
李旭
吴浩东
金佳莹
陈东旭
邓洪运
周艳文
LI Xu;WU Haodong;JIN Jiaying;CHEN Dongxu;DENG Hongyun;ZHOU Yanwen(School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,China;Beijing Chunlizhengda Medical Instruments Co.,Ltd.,Beijing 101100,China)
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2023年第2期134-141,共8页
Chinese Journal of Vacuum Science and Technology
基金
国家自然科学基金(51972155)
辽宁省教育厅基金(LJKZ0286)联合项目。
关键词
2024铝合金
冲刷腐蚀
电化学
化学气相沉积
2024 aluminum alloy
Erosion corrosion
Electrochemistry
Chemical vapor deposition
