| 铌锌酸铅基陶瓷相变的热力学分析 |
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| 引用本文： | 王晓莉 姚熹. 铌锌酸铅基陶瓷相变的热力学分析[J]. 硅酸盐学报, 1995, 23(3): 248-252 |
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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 |
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| 基金项目： | 国家“863”高技术新材料领域专家委员会资助 |
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| 摘 要： | ＰＺＮ基陶瓷在烧结过程中都要经历由焦绿石相朝钙钛矿相的转变。ＰＺＮ基陶瓷中钙钛矿相含量的多少与添加剂的种类及数量密切相关，本工作根据化学热力学理论，讨论了内应力对化学势的影响，建立了一个热力学模型，并用该模型讨论了ＰＺＮ基陶瓷在烧结时的相变过程。
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| 关 键 词： | PZN基陶瓷 相变 热力学分析 焦绿石 钙钛矿 |
THERMODYNAMICS OF PHASE TRANSFORMATION IN LEAD ZINC-NIOBATE CERAMICS |
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| Wang Xiaoli , Yao Xi. THERMODYNAMICS OF PHASE TRANSFORMATION IN LEAD ZINC-NIOBATE CERAMICS[J]. Journal of The Chinese Ceramic Society, 1995, 23(3): 248-252 |
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| Authors: | Wang Xiaoli Yao Xi |
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| Abstract: | Phase transformation from pyrochlore to perovskite takes place during the firing ofPb(Zn_(1/3)Nb_(2/3))O_3 (PZN)based ceramics. Stabilization of the perovskite phase in PZN based ceramics is close-ly related to the type of additive and its amount.A chemical thermodynamic model based on the chemical po-tential of the system is proposed in this paper,which is able to give resonable account to the stabilization ofthe perovskite phase in term of the internal lattice stress induced by the additives. |
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| Keywords: | pyrochlore perovskite phase transformation |
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