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[1]陈春华,沈晓冬,崔升,等.掺杂SrCO3对Ba4(Sm0.2Nd0.8)9.33Ti18O54微波介质陶瓷性能的影响[J].南京工业大学学报(自然科学版),2014,36(01):19-22.[doi:10.3969/j.issn.1671-7627.2014.01.004]
 CHEN Chunhua,SHEN Xiaodong,CUI Sheng,et al.Effects of SrCO3 doping on properties of Ba4(Sm0.2Nd0.8)9.33Ti18O54 microwave dielectric ceramics[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(01):19-22.[doi:10.3969/j.issn.1671-7627.2014.01.004]
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掺杂SrCO3对Ba4(Sm0.2Nd0.8)9.33Ti18O54微波介质陶瓷性能的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
36
期数:
2014年01期
页码:
19-22
栏目:
出版日期:
2014-01-20

文章信息/Info

Title:
Effects of SrCO3 doping on properties of Ba4(Sm0.2Nd0.8)9.33Ti18O54 microwave dielectric ceramics
文章编号:
1671-7627(2014)01-0019-04
作者:
陈春华沈晓冬崔升吴君
南京工业大学 材料科学与工程学院 材料化学工程国家重点实验室,江苏 南京 210009
Author(s):
CHEN ChunhuaSHEN XiaodongCUI ShengWU Jun
College of Materials Science and Engineering,Nanjing University of Technology, Nanjing 210009, China
关键词:
微波介质陶瓷 SrCO3掺杂 Ba4(Sm0.2Nd0.8)9.33Ti18O54 介电性能
Keywords:
microwave dielectric ceramics SrCO3 doping Ba4(Sm0.2Nd0.8)9.33Ti18O54 dielectric properties
分类号:
TM28
DOI:
10.3969/j.issn.1671-7627.2014.01.004
文献标志码:
A
摘要:
研究SrCO3掺杂对Ba4(Sm0.2Nd0.8)9.33Ti18O54(BSNT)材料相组成、微观结构和介电性能的影响。采用X线衍射仪(XRD)和扫描电子显微镜(SEM)表征BSNT掺杂SrCO3后陶瓷的相组成和微观结构。结果表明:SrCO3掺杂量低于4%时,SrCO3与BSNT陶瓷共熔而不产生第二相。同时发现随着SrCO3掺杂量的增加,介电常数εr和谐振频率温度系数τf近似线性增加。在BSNT陶瓷中掺杂SrCO3可以得到τf近乎于0。掺杂4%的SrCO3在1 360 ℃下烧结3 h,可得到介电性能最佳的BSNT陶瓷(εr=83.4,Qf=8.47 THz(4.67 GHz),τf=-2.1×10-6-1)。
Abstract:
The effects of SrCO3 doping on the phase composition, microstructure and the dielectric properties of Ba4(Sm0.2Nd0.8)9.33Ti18O54(BSNT)materials were investigated. The microstructure of BSNT doped with SrCO3 was analyzed using X-ray diffraction(XRD)and scanning electron microscopy(SEM). Results showed that small amounts of SrCO3(less than 4%)could be accommodated in BSNT without a secondary phase appeared. The dielectric constant εr and temperature coefficient of resonance frequency τf values showed an approximately linear increase with increase of additions of SrCO3. It was observed that τf(near zero)could be achieved with the addition of SrCO3 to BSNT ceramics. With 4% SrCO3 addition and sintered at 1 360 ℃ for 3 h, BSNT ceramics exhibited excellent dielectric properties(εr=81.5, Qf=8.47 THz(4.67 GHz)and τf=-2.1×10-6-1).

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2013-04-05
基金项目:国家自然科学基金(10976013); 江苏省自然科学基金(BK2010082); 材料化学工程国家重点实验室开放课题基金(KL11-09)
作者简介:陈春华(1989—),男,江苏盐城人,硕士,主要研究方向为新型功能陶瓷材料; 沈晓冬(联系人),教授,E-mail:xdshen@njut.edu.cn..
更新日期/Last Update: 2014-01-20