高温高温平镀和退火对改性钛酸铅陶瓷介电性能的影响

M. R. Cockburn, D. Hall, C. Millar
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引用次数: 0

摘要

对Sm, mn掺杂钛酸铅陶瓷在氩/氧气氛下的热等静压(HIPing)研究表明,HIPed材料的介电损耗明显低于常规烧结材料(tan /spl δ /在1 kHz时从大约0.02降低到0.01)。目前的工作是为了确定在减少损失方面最重要的加工变量。该材料采用常规固相反应制备,并经过多种HIPing和退火条件。在HIPing过程中,Mn离子在Pb和Ti位点之间的重新分配机制被提出,以解释所观察到的介电损耗的变化,这与电导率的变化有很强的相关性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The effect of high temperature HIPing and annealing on the dielectric properties of modified lead titanate ceramics
Studies on the hot isostatic pressing (HIPing) of Sm, Mn-doped lead titanate ceramics in an argon/oxygen atmosphere have shown that the HIPed materials exhibit a substantially lower dielectric loss than conventionally sintered materials (tan /spl delta/ being reduced from approximately 0.02 to 0.01 at 1 kHz). The present work was carried out in order to identify the processing variables which are most important in effecting this reduction in loss. The materials were prepared by conventional solid state reaction and subjected to a variety of HIPing and annealing conditions. A mechanism involving the re-distribution of Mn ions among the Pb and Ti sites during HIPing is proposed to account for the observed changes in dielectric loss, which show a strong correlation with changes in the electrical conductivity.
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