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微波场中烧结BaTiO3系半导体陶瓷的研究
Sintering of BaTiO3-based Semiconducting Ceramics in Microwave Field
【摘要】 采用ＴＥ１０３单模腔微波炉烧结ＢａＴｉＯ３系半导体陶瓷，对微波与陶瓷材料相互作用机制进行了探讨，分析了ＢａＴｉＯ3陶瓷微波结过程中各损耗随温度的变化规律；同时，分别在体系中引入受主杂质Ｃｒ３＋和施主杂质Ｎｂ5+，研究微波场中杂质浓度对钛酸钡陶瓷晶粒生长的影响。
【Abstract】 BaTiO3-based semiconducting ceramics were sintered in TE103 single-mode cavity microwave furnace. The mechanism of microwave acting on ceramic materials was studied. Meanwhile,Nb5+ as donor impurity and Cr3+ as acceptor impurity were doped in BaTiO3 ceramics,respectively. The results indicated that the impurities had an obvious effect on grain growth of BaTiO3 ceramics in microwave field. Based on defect chemistry,a reasonable explanation was given on the phenomenon.
【关键词】 微波场；
BaTiO3系半导体陶瓷；
微波烧结；
晶粒生长；
【Key words】 microwave field； BaTiO3-based semiconducting ceramics； microwave sintering； grain growth；
【Key words】 microwave field； BaTiO3-based semiconducting ceramics； microwave sintering； grain growth；
【基金】 教育部“高等学校骨干教师资助计划”资助项目
- 【文献出处】 压电与声光 ,PIEZOELECTRICS & ACOUSTOOPTICS , 编辑部邮箱 ,2000年02期
- 【分类号】TN304
- 【被引频次】8
- 【下载频次】100