Preparation of BaPbO_3 functional ceramics from leaded waste  

作　　者：Bin Li Shen-Gen Zhang Kun Zhang De-An Pan Jian-Jun Tian Hu Liu Alex A.Volinsky 

机构地区：[1]Institute for Advanced Materials and Technology, School of Materials Science and Engineering, University of Science and Technology Beijing [2]Beijing Nonferrous Metals and Rare Earth Research Institute [3]Department of Mechanical Engineering, University of South Florida

出　　处：《Rare Metals》2014年第5期598-603,共6页稀有金属（英文版）

基　　金：financially supported by the Beijing Nova Program (No.Z141103001814006);the National Key Technology R&D Program (Nos. 2012BAC12B05 and 2012BAC02B01);the National Natural Science Foundation of China (Nos. 51174247 and U1360202);the National High-Tech Research and the Development Program of China (No. 2012AA063202)

摘　　要：In this study, Pb was separated and used to prepare BaPbO3 conductive ceramics from leaded waste.The experimental results show that BaPbO3 powder synthesized at 700 °C has particle size of 2–5 lm. The powders were densified by sintering at 1,000 °C for 2 h in the air.Synthesized BaPbO3 ceramics have high Curie temperature and high-temperature positive temperature coefficient（PTC） resistivity characteristics. Electrical resistivity of BaPbO3 compact increases from 5 × 10^-6Ω·m at room temperature to 4 × 10^-4Ω·m at 750 °C. Compared with the one prepared by pure chemical reagents, the BaPbO3 prepared from leaded waste has the similar characteristics of high Curie temperature and PTC resistivity.In this study, Pb was separated and used to prepare BaPbO3 conductive ceramics from leaded waste.The experimental results show that BaPbO3 powder synthesized at 700 °C has particle size of 2–5 lm. The powders were densified by sintering at 1,000 °C for 2 h in the air.Synthesized BaPbO3 ceramics have high Curie temperature and high-temperature positive temperature coefficient（PTC） resistivity characteristics. Electrical resistivity of BaPbO3 compact increases from 5 × 10^-6Ω·m at room temperature to 4 × 10^-4Ω·m at 750 °C. Compared with the one prepared by pure chemical reagents, the BaPbO3 prepared from leaded waste has the similar characteristics of high Curie temperature and PTC resistivity.

关 键 词：BAPBO3 Leaded waste Positive temperature coefficient（PTC） 

分 类 号：TQ174.75[化学工程—陶瓷工业]