(1. 哈尔滨工程大学 材料科学与化学工程学院
超轻材料与表面技术教育部重点实验室，哈尔滨 150001；
2. 南京大学 现代工程和应用科学学院，南京 210093)
摘 要: 以TC4钛合金箔片和纯Al箔片为原料，采用真空热压烧结工艺制备单相金属间化合物Al3Ti和金属间化合物基层状复合材料Ti/Al3Ti。采用动电位极化曲线和交流阻抗谱等测试技术，研究对供货态的TC4、随炉热处理的TC4、单相金属间化合物Al3Ti、金属间化合物基层状复合材料Ti/Al3Ti在模拟海水环境下的腐蚀性能，并对腐蚀之后材料表面的形貌及腐蚀产物进行观察和标定，获得单相金属间化合物Al3Ti和金属间化合物基层状复合材料Ti/Al3Ti的耐海水腐蚀性能。结果表明:金属间化合物Al3Ti的耐海水腐蚀性能比层状复合材料Ti/Al3Ti的腐蚀性能要好，但腐蚀性能都比复合材料单元TC4合金的要差；层状复合材料海水浸泡的腐蚀产物主要分布在界面处，且有局部腐蚀现象出现。
关键字: 金属间化合物；层状复合材料；腐蚀性能；电化学测试
（1. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education,
College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;
2. College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China）
Abstract:The monolithic intermetallic tri-aluminide Al3Ti and metal-intermetallic-laminate composite Ti/Al3Ti were synthesized by Ti and Al foils using vacuum sintering process. The corrosion behaviors of TC4 alloys with and without heat treatment, monolithic intermetallic Al3Ti alloy and metal-intermetallic-laminate composite Ti/Al3Ti in marine environments were studied using potentiodynamic polarization curve, AC impedance. The surface morphologies and corrosion products of these materials were observed and analyzed，the corrosion-resistance monolithic intermetallic tri-aluminide Al3Ti and metal-intermetallic-laminate composite Ti/Al3Ti were obtained. The experimental results show that the monolithic intermetallic tri-aluminide Al3Ti has a good corrosion resistance comparing with the laminated composite Ti/Al3Ti, while their corrosion resistances are both poor than that of TC4 alloy. The corrosion products mainly distribute at the interface, and a local corrosion is found to occur in the metallic intermetallic laminate composite in marine environments.
Key words: intermetallic compound; laminar composite; corrosion resistance; electrochemical testing
