Research on Low-temperature Sintering of Ca_{0.3}(Li_{1/2}Sm_{1/2})_{0.7}TiO₃ Microwave Dielectric Ceramics

Yue-Ming LI

doi:10.3724/sp.j.1077.2008.01293

journal article·2008-12-04

Research on Low-temperature Sintering of Ca_0.3(Li_1/2Sm_1/2)_0.7TiO₃ Microwave Dielectric Ceramics

Yue-Ming LI

Journal of Inorganic Materials· Volume 23· Issue 6

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Source abstract

Abstract

采用传统陶瓷制备工艺,制备了掺杂Na2O-CaO-B2O3（NCB）氧化物的C（0．）（Li1/2Sm1/2）0．7TiO3（CLST）陶瓷,研究了NCB掺杂量与晶相组成、显微结构、烧结性能及微波介电性能的关系.研究结果表明：复合氧化物NCB掺杂量在1wt%～15wt%范围内没有杂相生成,晶相仍呈斜方钙钛矿结构.随着NCB添加量的增加,陶瓷致密化温度和饱和体积密度降低,介电常数e~r、无载品质因数与谐振频率乘积Qf值也呈下降趋势,频率温度系数Tf向正方向增大.NCB氧化物掺杂能有效地将CLST陶瓷的烧结温度由1300℃降低至900℃.添加12.5wt%NCB的CLST陶瓷在低温900℃烧结5h仍具有良好的微波介电性能：er=73.7,Qf=1583GHz,Tf=140.1×10^-6/℃,满足高介多层微波器件的设计要求.

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Research context

Ceramics & glasses

OpenAlex topics: Microwave Dielectric Ceramics Synthesis · Ferroelectric and Piezoelectric Materials · Advanced ceramic materials synthesis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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