ZBAS对BaAl2Si2O8结构与微波介电性能的影响

doi:10.15541/jim20170509

无机材料学报 ›› 2018, Vol. 33 ›› Issue (8): 883-888.DOI: 10.15541/jim20170509

ZBAS对BaAl₂Si₂O₈结构与微波介电性能的影响

韩林材, 丁士华, 宋天秀, 黄龙, 张晓云, 熊中

西华大学材料科学与工程学院, 成都 610039

收稿日期:2017-10-30 修回日期:2017-12-25 出版日期:2018-08-28 网络出版日期:2018-07-17
作者简介:韩林材(1992-), 男, 硕士研究生. E-mail: 729011258@qq.com
基金资助:
四川省特种材料及制备技术重点实验室开放课题资助项目(szjj2017-059);四川省教育厅资助项目(14ZB0126);四川省粉末冶金工程技术中心资助项目(SC-FMYJ2017-04, SC-FMYJ2017-07);国家自然科学基金(11074203)

ZBAS on the Structure and Dielectric Property of BaAl₂Si₂O₈

HAN Lin-Cai, DING Shi-Hua, SONG Tian-Xiu, HUANG Long, ZHANG Xiao-Yun, XIONG Zhong

School of Materials Science and Engineering, Xihua University, Chengdu 610039, China

Received:2017-10-30 Revised:2017-12-25 Published:2018-08-28 Online:2018-07-17
About author:HAN Lin-Cai. E-mail: 729011258@qq.com
Supported by:
Open Research Subject of Key Laboratory of Special Materials and Preparation Technology of Sichuan Province (szjj2017-059);Foundation of Sichuan Educational Committee (14ZB0126);Opening Foundation of Sichuan Province Engineering Center for Powder Metallurgy (SC-FMYJ2017-04, SC-FMYJ2017-07);National Natural Science Foundtion of China (11074203)

摘要/Abstract

摘要：

采用固相反应工艺, 按化学计量百分比BaAl₂Si₂O₈-x(ZnO-Al₂O₃-SiO₂-B₂O₃)(x=0, 1%, 2%, 3%, 4%)制备样品, 研究了不同含量ZnO-Al₂O₃-SiO₂-B₂O₃(ZBAS)玻璃相对BaO-Al₂O₃-SiO₂系介电材料显微结构及微波介电性能的影响。结果表明: 添加ZBAS玻璃相可以适当降低烧结温度, 促进六方钡长石转变为单斜钡长石。当x≥3%时, 六方钡长石可以完全转变为单斜钡长石。随着ZBAS玻璃相含量的增多, 样品的密度、介电常数(ε_r)、品质因数(Q×f)和谐振频率温度系数(τ_f)增大。在x=3%, 烧结温度为1360℃时, 可以获得综合性能相对较好的单斜钡长石, 其介电性能: ε_r=6.72, Q×f=28058 GHz, τ_f=-29.79×10^-⁶℃^-¹。

关键词: ZBAS玻璃相, 钡长石, 单斜相, 介电性能

Abstract:

Barium feldspar BaO-Al₂O₃-SiO₂ system materials have been studied widely for satellite communication, microwave substrate and packaging in recent years. BaAl₂Si₂O₈-x(ZnO-Al₂O₃-SiO₂-B₂O₃) (x=0, 1%, 2%, 3%, 4%) ceramics were prepared by solid state route. The effects of ZBAS glass on the sintering behaviour, phase composition and microwave dielectric properties of BaAl₂Si₂O₈ were investigated. Addition of ZBAS glass can effectirely lower the sintering temperature to 1360℃ without changing phase composition of the sample and greatly propel the transition from hexacelisian to celsian. When x≥2%, the transition from hexacelisian to celsian reaches 100%. Density, dielectric constant and τ_f of BaAl₂Si₂O₈-ZBAS ceramics increase with the increment of ZBAS glass in the range of 1%≤x≤4%. In addition, the resonant frequency temperature coefficient is negative. The BaAl₂Si₂O₈-ZBAS sintered at 1360℃ obtains a high Q×f of 28058 GHz, ε_r=6.72 and τ_f=-29.79×10^-⁶℃^-¹ at x=3%. Deviations between experimental and theoretical relative permittivity of BaAl₂Si₂O₈-xZBAS is also discussed.

Key words: ZBAS glass, feldspar, celsian, microwave dielectric properties.

中图分类号:

TQ174

韩林材, 丁士华, 宋天秀, 黄龙, 张晓云, 熊中. ZBAS对BaAl₂Si₂O₈结构与微波介电性能的影响[J]. 无机材料学报, 2018, 33(8): 883-888.

HAN Lin-Cai, DING Shi-Hua, SONG Tian-Xiu, HUANG Long, ZHANG Xiao-Yun, XIONG Zhong. ZBAS on the Structure and Dielectric Property of BaAl₂Si₂O₈[J]. Journal of Inorganic Materials, 2018, 33(8): 883-888.

图/表 6

图1 不同ZBAS添加量时, 密度随烧结温度的变化曲线(a), 最佳烧结温度下密度随添加量的变化曲线(b)

Fig. 1 Relationship between density and sintering temperature for the sample with different amount of ZBAS (a) and the density curve in respond to ZBAS amount for the samples sintered at optimum temperatures (b)

图2 不同ZBAS玻璃相含量样品的XRD图谱

Fig. 2 XRD patterns of the BAS samples with different glass phase amounts

图3 BaAl2Si2O8-x(ZBAS)样品的SEM照片

Fig. 3 SEM images of the samples with different ZBAS amounts

图4 BAS系样品介电常数随ZBAS玻璃相含量变化的关系曲线

Fig. 4 Dielectric constant of the samples with different ZBAS amounts

图5 BAS系样品的品质因数(Q×f)曲线

Fig. 5 Q×f of the samples with different ZBAS amounts

图6 BAS系样品的谐振频率温度曲线

Fig. 6 τf of the samples with different ZBAS amounts

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ZBAS对BaAl₂Si₂O₈结构与微波介电性能的影响

ZBAS on the Structure and Dielectric Property of BaAl₂Si₂O₈

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