摘要
使用脉冲电源在较低的电压下制备2024铝合金表面陶瓷基氧化膜,采用正交实验法设计实验,通过改变电解质质量浓度、电流密度、氧化时间等参数,研究了氧化陶瓷膜的生长规律,对氧化陶瓷膜进行了表征与性能测试.使用扫描电镜对氧化后生成的陶瓷膜层的表面形貌进行观察,使用涂层测厚仪对厚度进行测量,使用电子能谱和X射线衍射对氧化陶瓷膜的成分与结构进行分析,使用电化学工作站对氧化陶瓷膜的耐腐蚀性进行分析.结果表明:2024铝合金在硫酸草酸体系中,电流密度在4 A·dm^-2,氧化时间在60 min,反应温度在10℃条件下制备出的氧化陶瓷膜耐腐蚀性能较好.
The ceramic-based oxide film on the surface of 2024 aluminum alloy was prepared by pulsed power supply at a lower voltage.The experiment was carried out by orthogonal experiment.The growth rule of oxidized ceramic membrane was studied by changing the electrolyte concentration,current density and oxidation time,and the characterization and performance test of the oxidized ceramic film were performed.The surface morphology of the ceramic film layer formed by oxidation was observed by scanning electron microscopy.The thickness was measured using a coating thickness gauge.The composition and structure of the oxidized ceramic film were analyzed by electron spectroscopy and X-ray diffraction.An electrochemical workstation was used to analyze the corrosion resistance of the oxide ceramic film.The results show that the 2024 aluminum alloy in the sulfuric acid-oxalic acid system has a current density of 4 A·dm^-2,an oxidation time of 60 min,and a reaction temperature of 10℃to prepare an oxidized ceramic film with good corrosion resistance.
作者
马国峰
刘志扬
贺春林
MA Guofeng;LIU Zhiyang;HE Chunlin(Liaoning Province Key Laboratory for Advanced Materials Preparation Technology, Shenyang University, Shenyang 110044, China)
出处
《沈阳大学学报（自然科学版）》
CAS
2020年第2期91-98,共8页
Journal of Shenyang University：Natural Science
基金
国家自然科学基金资助项目(51171118)
中国博士后基金资助项目(2016M601333)
辽宁省自然科学基金面上资助项目(2019MS236)
沈阳市科技计划项目(18-013-0-14).
关键词
铝合金
氧化陶瓷膜
脉冲电源
极化曲线
电化学
耐腐蚀性
aluminum alloy
oxide ceramic film
pulse power supply
polarization curve
electrochemical
corrosion resistance
