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...

TiO2 添加量对Zn0.8Mg0.2ZrNb2O8 微波介质陶瓷结构和性能的影响

DOI: 10.14062/j.issn.0454-5648.2015.12.08

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用传统固相合成工艺制备(1–x)Zn0.8Mg0.2ZrNb2O8-xTiO2(ZMZNT,x=0.00,0.20,0.40,0.50,0.60,0.65,0.70,0.80)微波介质陶瓷,研究了TiO2添加量对Zn0.8Mg0.2ZrNb2O8陶瓷烧结行为、相结构、微观结构以及微波介电性能的影响。结果表明随着TiO2添加量增加,ZMZNT陶瓷的烧结温度逐步下降。当x=0~0.5时,形成了Zn0.8Mg0.2(Zr,Ti)Nb2O8固溶体;而当x=0.6~0.8时,陶瓷体系发生了复杂物相变化,微观形貌也呈现对应的变化规律。随着TiO2添加量的增加,ZMZNT陶瓷相对介电常数εr逐渐增大,品质因数Q×f呈下降趋势,谐振频率温度系数τf呈上升趋势。当x=0.65时,0.35Zn0.8Mg0.2ZrNb2O8-0.65TiO2陶瓷在1170℃烧结4h,可以获得较佳的微波介电性能εr=36.7,Q×f=37432GHz,τf=7.12×10–6/℃。

References

[1]  CHEN Y C, CHEN M D. Microwave dielectric properties of highquality factor La(Mg0.5–xCaxSn0.5)O3 ceramics[J]. J Phys Chem Solids,2011, 72: 1447–1451.
[2]  梁飞, 叶方平, 吕文中, 等. 0.7CaTiO3-0.3(LaxNd1–x)AlO3 微波介质陶瓷的研究[J]. 电子元件与材料, 2012, 31(11): 1–5.LIANG Fei, YE Fangping, LU Wenzhong, et al. Electron ComponMater (in Chinese), 2012, 31(11): 1–5.
[3]  曲秀荣, 贾德昌. 微波介质陶瓷的研究进展[J]. 硅酸盐通报, 2006,25(6): 144–147.QU Xiurong, JIA Dechang. Bull Chin Ceram Soc(in Chinese), 2006,25(6): 144–147.
[4]  KIM W S, KIM E S, YOON K H. Effects of Sm3+ substitution ondielectric properties of Ca1–xSm2/3xTiO3 ceramics at microwavefrequencies[J]. J Am Ceram Soc, 1999, 82(8): 2111–2115.
[5]  汪婷, 李月明, 王竹梅, 等. 高品质因素MgTiO3-SrTiO3系微波陶瓷介电性能的研究[J]. 人工晶体学报, 2012, 41(增刊): 336–340.WANG Ting, LI Yueming, WANG Zhumei, et al. J Synth Cryst(inChinese), 2012, 41(Suppl): 336–340.
[6]  HUANG C L, TSENG C F, YANG W R, et al. High-dielectric-constantand low-loss microwave dielectric in the (1–x)Nd(Zn1/2Ti1/2)O3-xSrTiO3system with a zero temperature coefficient of resonant frequency[J]. J AmCeram Soc, 2008, 91(7): 2201–2204.
[7]  LIAO Q W, LI L X, REN X, et al. A low sintering temperature low lossmicrowave dielectric material ZnZrNb2O8[J]. J Am Ceram Soc, 2012,95: 3363–3365.
[8]  LI L X, SU H, CAI H C, et al. Microstructure and microwave dielectriccharacteristics of ZnZrNb2O8 and (Zn0.95M0.05)ZrNb2O8(M=Ni, Mg, Coand Mn) ceramics[J]. J Alloy Compd, 2015.(639): 516–519.
[9]  CAI H C, LI L X, SU H, et al. A microwave dielectric materialMg0.5Zn0.5ZrNb2O8[J]. Mater Lett, 2015, 144: 78–81.
[10]  TANG X, YANG H, ZHANG Q L, et al. Low-temperature sinteringand microwave dielectric properties of ZnZrNb2O8 ceramics withBaCu(B2O5) addition[J]. Ceram Int, 2014, 40(8):12875–12881.
[11]  SHANNON R D. Revised ejective ionic radii and systematic studies ofinteratomic distance in halides and chalcogenides[J]. Acta Crystallogr,1976, A32(1): 751–755.
[12]  KIM E S, KANG D H. Relationships between crystal structure andmicrowave dielectric properties of (Zn1/3B2/35+)xTi1–xO2(B5+=Nb, Ta)ceramics[J]. Ceram Int, 2008, 34: 883–888.
[13]  ANJANA P S, SEBEATIAN M T, AXELSSON A K, et al. Microwavedielectric properties of CeO2–0.5AO–0.5TiO2 (A=Ca, Mg, Zn, Mn, Co,Ni, W) ceramics [J]. J Eur Ceram Soc, 2007, 27: 3445–3452.
[14]  LI Y, CHEN X M. Effects of sintering conditions on microwavedielectrics properties of Ba6–3x(Sm1–yNd)8+2xTi18O54(x =2/3)[J]. J EurCeram Soc, 2002, 22: 715–719.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133