陕西科技大学学报2017，Vol.35Issue(6)：40-44,5.
NBT-BT基无铅高居里点半导体陶瓷的PTC性能研究
Study on PTC properties of lead-f ree high Curie temperature NBT-BT based semiconductor ceramic
摘要
Abstract
The semiconducting (1-x)BaTiO3-xLa2 O3 ceramic was prepared by using the tradi-tional solid state reaction and through the test to determine the performance of the most ex-cellent components.On this basis,the (1-y)Na0.5Bi0.5 TiO3-yBaTiO3 semiconductor ceramics were prepared.The structure,dielectric properties and PTC properties of the prepared ceram-ic samples were analyzed by X-ray diffraction (XRD),impedance spectroscopy and the tem-perature dependence of resistivity.T he results show that the BaTiO3 ceramic sample could obtain good PTC effect (ρmax/ρmin=103 ),low room temperature resistivity (ρRT ~2.2 × 102 Ω· cm) and high Curie temperature (TC ~118.3 ℃) when x=0.0022.The NBT-based ce-ramics could obtain low ρRT (7.7 × 107 Ω· cm) and high Curie temperature (240.3 ℃) when y=0.4,which is expected to be used in the PTC field.关键词
Na0.5Bi0.5TiO3/半导体/PTC效应Key words
Na0 .5 Bi0 .5 TiO3/semiconductor/PTC effect分类
信息技术与安全科学引用本文复制引用
蒲永平,万晶,惠驰原,崔晨薇,郭一松..NBT-BT基无铅高居里点半导体陶瓷的PTC性能研究[J].陕西科技大学学报,2017,35(6):40-44,5.基金项目
国家自然科学基金项目(51372144 ,51641207 ) （51372144 ,51641207 ）
