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一种大功率压电陶瓷变压器材料的研究
作者:周桃生 邝安祥 
单位:湖北大学物理系  湖北大学物理系 
关键词:压电陶瓷变压器材料  功率输出  铌镁-铌锰-锆-钛酸铅四元系(PMMN) 
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出版年,卷(期):页码:1992,20(4):332-337
DOI:
摘要:
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。
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The Pb(Mg_(1/3)Nb(2/3))_A(Mn_(1/3)Nb(2/3))_B Ti_CZr_DO_3(or PMMN)quaternary system piezoelectric ceramic material was investigated.A cross-transition position in rectangle phase diagram at room temperature was found. The basic composition PMMN-1 at this position shows excellent piezoelectric performance, temperature stability, low electromechanical loss and high mechanical strength. Adding with appropriate amount of CeO_2 and substituting Sr partly for Pb in PMMN ceramics, thetemperature characteristics would be improved further. Besides, Compared with binary and ternary piezoelectric ceramics, the PMMN quaternary system has good technological features, such as, property easily modified, low calcining and sintering temperature, sintering large range, low volatilization of PbO so that piezoelectric ceramic of high quality can be easily prepared.
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参考文献:
1 邝安祥,周桃生,何昌鑫等.科学通报,1989;34(11) :811 2 周桃生,邝安祥.湖北大学学报(自然科学版),1988;2:51 3 邝安祥,周桃生.武汉大学学报(自然科学版),1988;10:39
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