Effects of sintering temperature on microstructure and performance of Ti-based Ti-Mn alloy anodic material  

作　　者：侯永丹 江垚 雷霆 贺跃辉 

机构地区：[1]State Key Laboratory of Powder Metallurgy,Central South University

出　　处：《Journal of Central South University》2011年第4期966-971,共6页中南大学学报（英文版）

基　　金：Projects(20476106,50721003 and 20636020) supported by the National Natural Science Foundation of China;Project(50825102) supported by the National Natural Science Funds for Distinguished Young Scholar of China;Project(2006AA03Z511) supported by the National High Technology Research and Development Program of China;Project supported by the 111 Program of Chinese Ministry of Education

摘　　要：A novel Ti-based Ti-Mn composite anode used for electrolytic manganese dioxide(EMD) fabrication was developed by a two-step heating manganizing technique.The effects of sintering temperature on the manganized microstructure and the performance of the composite anode were studied by scanning electron microscopy(SEM),mechanical properties tests at room temperature and electrochemical methods.The results show that the thickness of the diffusion layer increases with the increase of sintering temperature up to 1 100 °C;whereas,the surface Mn content increases and reaches the maximum at 1 000 °C and then decreases thereafter.Lower surface Mn content is beneficial for the enhanced corrosion resistance and lowered open cell voltage in electrolytic process.The new anode prepared under the optimized conditions has been applied in industry and exhibits superior economic benefits to conventional Ti anodic materials.A novel Ti-based Ti-Mn composite anode used for electrolytic manganese dioxide （EMD） fabrication was developed by a two-step heating manganizing technique. The effects of sintering temperature on the manganized microstructure and the performance of the composite anode were studied by scanning electron microscopy （SEM）, mechanical properties tests at room temperature and electrochemical methods. The results show that the thickness of the diffusion layer increases with the increase of sintering temperature up to 1 100 ~C; whereas, the surface Mn content increases and reaches the maximum at 1 000 ~C and then decreases thereafter. Lower surface Mn content is beneficial for the enhanced corrosion resistance and lowered open cell voltage in electrolytic process. The new anode prepared under the optimized conditions has been applied in industry and exhibits superior economic benefits to conventional Ti anodic materials.

关 键 词：Ti-based Ti-Mn composite anode electrolytic manganese dioxide （EMD） MICROSTRUCTURE electrochemical property corrosion resistance property mechanical properties 

分 类 号：TG146.23[一般工业技术—材料科学与工程]