Preparation of BaPbO_3 functional ceramics from leaded waste

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 9 10-6X m at room temperature to 4 9 10-4X 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.