全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

Ca0.6La0.8/3TiO3-Li0.5Sm0.5TiO3复合微波陶瓷的介电性能

DOI: 10.7521/j.issn.0454-5648.2014.04.05

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用传统固相合成法制备了xCa0.6La0.8/3TiO3-(1-x)(Li0.5Sm0.5)TiO3(CLT-LST)系列微波介质陶瓷材料,研究了该系列微波介质陶瓷的物相结构、表面形貌、介电性能。实验发现随着Ca0.6La0.8/3TiO3含量的增多,CLT-LST样品XRD峰轻微左移。陶瓷组成对微波介电性能影响显著,复合体系CLT--LST的微波介电性能随着x值不同而连续变化当x从0.2上升到0.6时,介电常数(εr)逐步增大,在x=(0.4~0.6),εr变化趋于稳定,达到较佳值;品质因数(Q·f)则先减小后增大再迅速减小;谐振频率温度系数(τf)逐渐从负值向正值方向移动。当复合体系组成为0.4Ca0.6La0.8/3TiO3-0.6(Li0.5Sm0.5)TiO3时,在1250℃烧结4h所得到的微波介电性能较佳,εr=125;Q·f=2680GHz;τf=7.0×106/℃。

References

[1]  宋英, 王富平, 周玉. 微波介质陶瓷材料的研究进展[J]. 材料科学与工艺. 1998, 6(2): 51-64.
[2]  SONG Y, WANG F P, ZHOU Y. Mater Sci Technol(in Chinese), 1998, 6(2): 51-64.
[3]  王浩,陈文, 刘涛.(1-y)Ca1-xLa2x/3TiO3-yCa(Mg1/3Nb2/3)O3复合体系的微波介电性能[J]. 硅酸盐学报, 2004, 32(7): 880-883.
[4]  WANG H,CHEN W,LIU T. J Chin Ceram Soc, 2004, 32(7): 880-883
[5]  KELL R C,? GREENHAM A C,? OLDS G C E. High-permittivity temperature-stable ceramics dielectrics with low microwave loss[J].? J Am Ceram Soc, 1973, 56(7): 352-354.
[6]  HANG C L. TSAI J T, CHEN Y B. Dielectric properties of (l-y) Ca1-xTiO3-y(Li,Nd)1/2TiO3 ceramics system at microwave frequency[J]. Mater Res Bull, 2001, 36(3-4)547-556.
[7]  YOSHIDA M, HARA M N, TAKADA T, et al. Structure and dielectric properties of? Ca1-xNd2x/3Ti03\[J\]. JPn J Appl Phys, 1997, 36: 6818-6823.
[8]  KIM W S, KIM E S, YOON K H. Effects of Sm3+ substitution on dielectric properties or of Ca(1-x)Sm2x/3TiO3 ceramics at microwave frquencies[J]. J Am Ceram Soc, 1999, 82(8): 2111-2115.
[9]  HUANG Chengliang,TSAI Jsung Ta,CHEN Yuanbin. Dielectric properties of (1-y) Ca1-xLa2x/3TiO3-y(Li,Nd)1/2TiO3 ceramic system at microwave frequency\[J\]. Mater? Res? Bull, 2001(36): 547-556.
[10]  UBIC R., REANEY I M, LEE W E. Microwave dielectric solid-solution phase in system BaO-Ln2O3-TiO2(Ln=Lanthanide caution)\[J\]. Int Mater Rev, 1998, 43(5): 205-219.
[11]  KIM EUNG SOO, YOON KI HYUN. Microwave dielectric properties of (1-x)CaTiO3-xLi1/2Sm1/2TiO3 ceramics\[J\].J Eur Ceram Soc, 2003, 24(14): 2397-2410.
[12]  YOON KI HYUN,KIM WOO SUP,KIM EUNG SOO. Dependence of the octahedral bond valence on microwave dielectric properties of Ca1-xSm2x/3TiO3 ceramics\[J\]. Mater? Sci Eng? B, 2003, 99(1-3): 112-115
[13]  KIM E S, CHUN B S, YO D W, et al. Microwave dielectric properties of (l-x)Ca0.7Nd0.2TiO3-x(Li0.5Nd0.5)TiO3 ceramics\[J\].Mater Sei Eng B, 2003, 99(1-3): 243-246.
[14]  杨辉,张启龙,王家邦,等. 微波介质陶瓷及器件研究进展[J].硅酸盐学报.2003,31(10):965-980.
[15]  YANG H, ZHANG Q L, WANG J B, et al.? J Chin Ceram Soc. 2003, 31(10): 965-980.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133