采用NaCl-KCl熔盐法成功地制备了单一钙钛矿相结构的0.8PMN-0.2PT陶瓷,并详细研究了添加过量PbO和过量MgO对0.8PMN-0.2PT陶瓷样品的相结构和介电性能的影响。结果表明:过量PbO和过量MgO都能抑制和消除焦绿石相,并提高陶瓷的介电常数,但过量MgO的效果更好。
Abstract
0.8PMN-0.2PT powders and ceramics of pure perovskite were sucessfully prepared by molten salt synthesis using mixtures of NaCl and KCl salt.The effect of excess PbO and excess MgO on phase structure and dielectric property of PMN-PT ceramics was studied.The results indicate that excess PbO and excess MgO have a beneficial effect on reducing and even eliminating pyrochlore phase and increasing dielectric constant.The effect of excess MgO is better than that of excess PbO.
关键词
熔盐法 /
铌镁酸铅-钛酸铅 /
相结构 /
介电性能
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Key words
molten salt synthesis /
PMN-PT /
phase structure /
dielectric property
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中图分类号：
TB323
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参考文献
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脚注
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基金
航空基金资助项目(97G53083)
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