| Pb（Zn1／3Nb2／3）O3基陶瓷固相反应中的相变过程 |
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| 引用本文： | 王晓莉,姚熹.Pb（Zn1／3Nb2／3）O3基陶瓷固相反应中的相变过程[J].硅酸盐学报,1992,20(4):347-352. |
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| 作者姓名： | 王晓莉 姚熹 |
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| 作者单位： | 西安交通大学电子材料研究室
(王跷莉)，西安交通大学电子材料研究室(姚熹) |
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| 基金项目： | 国家科委“863”计划资助 |
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| 摘 要： | 用两次合成工艺,按Pb(Zn_(1/3)Nb_(2/3))O_3(PZN)的化学计量比合成的陶瓷为一种立方焦绿石相和PbO的混合物,其中立方焦绿石相为主晶相。该焦绿石结构的分子式为Pb_2ZnNb_2O_8,Fd3m空间群,Z=6,α=10.62(?)。在PZN基陶瓷中引入钙钛矿结构的子晶(如BaTiO_3),将促进其周围的Pb_2ZnNb_2O_8与PbO结合,形成钙钛矿结构的Pb(Zn_(1/3)Nb_(2/3))O_3。
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| 关 键 词： | 钙钛矿 结构 焦绿石 相变 铅 陶瓷 |
PROCESS OF PHASE TRANSFORMATION IN SOLID STATE REACTION OF Pb(Zn_(1/3)Nb_(2/3))O_3 BASED CERAMICS |
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| Wang Xiaoli Yao Xi.PROCESS OF PHASE TRANSFORMATION IN SOLID STATE REACTION OF Pb(Zn_(1/3)Nb_(2/3))O_3 BASED CERAMICS[J].Journal of The Chinese Ceramic Society,1992,20(4):347-352. |
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| Authors: | Wang Xiaoli Yao Xi |
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| Abstract: | Main crystal phase in ceramics synthesized by stoichiometric composition Pb (Zn_(1/3)Nb_(2/3))O_3, using two steps, columbite route via PbO+1/3ZnNb_2O_6 is pyrochlore with PbO as a second phase. The molecular formula of the pyrochlore phase is Pb_2ZnNb_2O_8, space group Fd3m, Z=6,a=10.62(?). If perovskite, such as BaTiO_3, is added, it is advantageous to promote the adjacent Pb_2ZnNb_2O_3 and PbO to form perovskite Pb(Zn_(1/3)Nb_(2/3))O_3. |
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| Keywords: | perovskite structure pyrochlore structure phase transformation |
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