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一种大功率压电陶瓷变压器材料的研究 被引量:14
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作者 周桃生 邝安祥 《硅酸盐学报》 EI CAS CSCD 北大核心 1992年第4期332-337,共6页
通过对Pb(Mg_(1/3)Nb_(2/3))_A(Mn_(1/3)Nb_(2/3))_B Ti_cZr_DO_3(简称PMMN)四元系压电陶瓷材料的研究,发现在其室温矩形相图内存在一“交叉”性过渡位置,在此位置上的基本试样PMMN-1具有高压电性、低机电损耗、温度稳定性好、机械强度... 通过对Pb(Mg_(1/3)Nb_(2/3))_A(Mn_(1/3)Nb_(2/3))_B Ti_cZr_DO_3(简称PMMN)四元系压电陶瓷材料的研究,发现在其室温矩形相图内存在一“交叉”性过渡位置,在此位置上的基本试样PMMN-1具有高压电性、低机电损耗、温度稳定性好、机械强度高等优点,是一种开发大功率压电变压器及其它压电器件的较佳材料。适量添加CeO_2和以Sr部分取代Pb,可较好地改善其温度稳定性。该材料与一般二、三元系压电材料相比,还具有性能易于调整,预烧温度与烧成温度低,烧结范围宽,PbO挥发量小,易于制备出均质的高性能压电陶瓷等工艺特点。 展开更多
关键词 压电陶 变压器材料 pmmn
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STRUCTURE AND PROPERTY OF PIEZOELECTRIC CERAMICS OF QUATERNARY SYSTEM
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作者 崔万秋 周静 刘黎 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 1995年第1期17-22,共6页
Composite perovskite piezoelectric ceramics of PMMN quaternary system were prepared by cold-pressing and solid-phase sintering. Piezoelectric modulus and density of the samples were measured after polarization. X-ray ... Composite perovskite piezoelectric ceramics of PMMN quaternary system were prepared by cold-pressing and solid-phase sintering. Piezoelectric modulus and density of the samples were measured after polarization. X-ray diffraction analysis and SEM were used to prove the result that the major phase of the piezoelectric ceramic spectimen based on PZT is PZT phase,which is tetragonal system and P-4mm space group. 展开更多
关键词 PIEZOELECTRIC CERAMIC pmmn quaternary system PIEZOELECTRIC MODULUS PEROVSKITE STRUCTURE
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