以无机盐或氧化物Ｎｂ２Ｏ５、ＭｇＯ、ＴｉＣｌ４和Ｐｂ（ＡＣ）２、３Ｈ２Ｏ为原材料，柠檬酸和ＥＤＴＡ为复合螫合剂，乙二醇为溶剂，分别制备Ｎｂ、Ｍｇ－Ｎｂ、Ｔｉ和Ｐｂ的有机化合物前驱液，采用溶胶－凝胶工艺制备ＰＭＮ－ＰＴ弛豫铁电陶瓷粉体及其烧结体．讨论了制备工艺和螯合剂等对金属有机化合物溶液的性质、材料物相形成和介电性能的影响．
PMN-PT relax ferroelectric fine powders were prepared by a sol-gel routes with inorganic compounds, Nb2O5, TiCl4 and Pb(Ac)2·3H2O as raw materials, citric acid and EDTA as co-chelate and ethylene glycol as solvent. The effects of processing technology and complex/ chelate on the properties of organic compounds precursors, the powders synthesis, the phases formation and dielectric properties were discussed.
参考文献
| [1] | Lakeman C D E, Payne D A. Materials Chemistry and Physics, 1994, 38: 305--324. [2] Pechini M P. Method of Preparing Lead and Alkaline Earth Titanates and Niobates and Coating Method using the Same to Form a Capacitor. U.S. Patent, Ser. No.304,434, Aug.26,1963. [3] 齐雪君. PMN-PT弛豫铁电粉体及其陶瓷的溶胶-凝胶法制备. 华南理工大学硕士学位论文, 2000. 33--34. [4] Guha J P. Journal of Materials Science, 1999, 34: 4985--4994. [5] Narendar Y, Messing G L. J. Am. Ceram. Soc., 1997, 80 (4): 915--924. [6] Zhuang Z, Haun M, Cross L E. Advanced Ceram. Mat., 1988, 3 (5): 485--490. [7] Villegas M, Kosec M, Moure C, et al. J. Mater. Res., 1999, 14 (3): 891--905. |
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