Ti-Al-Ti层状复合电极材料制备与性能  

Preparation and properties of Ti-Al-Ti laminated composite electrode materials

作　　者：杨秀琴[1] 竺培显[1] 黄文芳[1] 周生刚[1] 许健[1] 张瑾[1] 马会宇[1] 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093

出　　处：《材料热处理学报》2010年第8期15-19,共5页Transactions of Materials and Heat Treatment

基　　金：国家高技术研究发展计划(863)项目(2009AA03Z512);国家自然科学基金资助项目(50664005);云南省科技厅联合支持项目(2009GA007)

摘　　要：采用熔融金属浸镀得到Ti-Al层状板材,并利用浇铸复合的方法制备了Ti-Al-Ti层状复合材料,通过四探针法、扫描电镜(SEM)、能谱(EDS)、抗弯曲性能试验等测试手段对样品的结构与性能进行表征。结果表明,Ti表面浸镀Al层,实现了Ti与Al之间的冶金结合;所制得的Ti/Al层状板材与纯Ti相比,电阻降低50%～80%;采用浇铸法得到Ti-Al-Ti层状复合材料的力学性能满足机械加工需求。因此,Ti-Al-Ti层状复合材料替代纯Ti作为涂层钛阳极(DSA)的基体金属,在保持纯Ti阳极优点基础上,显著降低电阻,从而改善DSA的电化学催化性能。Laminated bimetal Ti-Al sheets were prepared by molten metal hot-dip method,and then the sheets were employed to cast into the Ti-Al-Ti laminated composite electrode materials.Microstructure and properties of the electrode material samples were characterized by means of electric resistance test using four-probe method,SEM,EDS and bending testing.The results show that metallurgical bonding between Ti and Al is obtained by dip aluminizing on surface of Ti.The resistance of laminated bimetal Ti-Al sheets decreases by 50%-80% as compared with pure titanium.It is found that the Ti-Al-Ti laminated composite shows a better mechanical performance to meet the machining requirement.Therefore,compared with pure titanium as matrix metal of DSA electrode,the Ti-Al-Ti laminated composite maintains the advantages of titanium anodes and exhibits a significant reduction in resistance,so as to improve the electrochemical catalytic properties of DSA electrode.

关 键 词：涂层钛阳极(DSA) 层状复合 TI-AL 浸镀 浇铸 

分 类 号：TG113.12[金属学及工艺—物理冶金] TB331[金属学及工艺—金属学]