复合烧结助剂对Ca_(0.3)(Li_(0.5)Sm_(0.5))_(0.7)TiO_3微波介质陶瓷低温烧结与性能研究

硅酸盐通报 ›› 2010, Vol. 29 ›› Issue (1): 162-166.

复合烧结助剂对Ca_(0.3)(Li_(0.5)Sm_(0.5))_(0.7)TiO_3微波介质陶瓷低温烧结与性能研究

张斌;李月明;张华;廖润华

景德镇陶瓷学院材料科学与工程学院,景德镇,333001;浙江正原电气股份有限公司,嘉兴,314003;景德镇陶瓷学院材料科学与工程学院,景德镇,333001

出版日期:2010-02-15 发布日期:2021-01-18
基金资助:
江西省教育厅科技项目(GJJ08312)

Research on Low-temperature Sintering and Properties of Ca_(0.3)(Li_(0.5)Sm_(0.5))_(0.7)TiO_3 Microwave Dielectric Ceramics with Composite Sintering Additive

ZHANG Bin;LI Yue-ming;ZHANG Hua;LIAO Run-hua

Online:2010-02-15 Published:2021-01-18

摘要/Abstract

摘要： 研究了以Ca_(0.3)(Li_(0.5)Sm_(0.5))_(0.7)TiO_3(CLST-0.7)为基料,复合添加10 wt%CaO-B_2O_3-SiO_2(CBS)、4 wt%Li_2O-B_2O_3-SiO_2-CaO-Al_2O_3(LBSCA)和0～2 wt%CuO氧化物为烧结助剂的微波介质陶瓷的低温烧结行为及微波介电特性.结果表明:随着CuO添加量的增加,陶瓷体积密度、介电常数ε_r、无载品质因数与谐振频率乘积Qf值,都呈先增加后降低,频率温度系数τ_f呈降低的趋势.添加10 wt%CBS、4.0 wt% LBSCA和1.0 wt%CuO的CLST-0.7微波介质陶瓷,在900 ℃烧结5 h具有较佳的微波介电性能:ε_r ＝ 67.31,Qf ＝ 2197 GHz,τ_f＝40.28 ppm/℃.

关键词: Ca_(0.3)(Li_(0.5)Sm_(0.5))_(0.7)TiO_3;CaO-B_2O_3-SiO_2;Li_2O-B_2O_3-SiO_2-CaO-Al_2O_3;CuO;微波介质陶瓷;低温烧结

Abstract: The low temperature sintering process and the microwave dielectric properties of a microwave dielectric material based on Ca_(0.3)(Li_(0.5)Sm_(0.5))_(0.7)TiO_3(CLST-0.7) ceramic with 10 wt % CaO-B_2O_3-SiO_2 (CBS) multiplicity oxide and 4 wt % Li_2O-B_2O_3-SiO_2-CaO-Al_2O_3 (LBSCA) glass and 0-2 wt% CuO multiplicity additives were investigated. The results indicate that with the increasing of CuO content, the bulk density, the dielectric constant ε_r, the product of quality factor and resonance frequency Qf value of CLST-0.7 ceramics all increase first and then decrease and the temperature coefficient of resonant frequency τ_f of CLST ceramics decrease. The sample of CLST with 10 wt% CBS, 4.0 wt% LBSCA and 1.0 wt% CuO sintered at 900 ℃ for 5 h exhibits excellent microwave dielectric properties:ε_r＝67.31,Qf＝2197 GHz,τ_f＝40.28 ppm/℃.

Key words: Ca_(0.30(Li_(0.5)Sm_(0.5))_(0.7)TiO_3;CaO-B_2O_3-SiO_2;Li_2O-B_2O_3-SiO_2-CaO-Al_2O_3;CuO;microwave dielectric ceramic;low temperature sintering

中图分类号:

TQ174

张斌;李月明;张华;廖润华. 复合烧结助剂对Ca_(0.3)(Li_(0.5)Sm_(0.5))_(0.7)TiO_3微波介质陶瓷低温烧结与性能研究[J]. 硅酸盐通报, 2010, 29(1): 162-166.

ZHANG Bin;LI Yue-ming;ZHANG Hua;LIAO Run-hua. Research on Low-temperature Sintering and Properties of Ca_(0.3)(Li_(0.5)Sm_(0.5))_(0.7)TiO_3 Microwave Dielectric Ceramics with Composite Sintering Additive[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2010, 29(1): 162-166.

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