MZT-CLT介质陶瓷的微波烧结研究  

Study on Microwave Sintering of MZT-CLT Dielectric Ceramics

作　　者：赵莉[1] 胡玉叶[1] 李丹[1] 沈春英[2] 

机构地区：[1]安徽新华学院土木与环境工程学院,安徽合肥230088 [2]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《压电与声光》2017年第5期707-710,716,共5页Piezoelectrics & Acoustooptics

基　　金：安徽省高校自然基金资助项目(KJ2016A316;KJ2015A336);安徽新华学院校级自然基金资助项目(2015zr006;2015zr012)

摘　　要：微波烧结法制备(1-x)(Mg_(0.7)Zn_(0.3))TiO_(3-x)(Ca_(0.61)La_(0.26))TiO_3(MZT-CLT,x=0.13)系介质陶瓷,研究微波烧结工艺对MZT-CLT陶瓷烧结性能、微观结构、相组成和微波介电性能的影响。结果表明,MZT-CLT陶瓷的主晶相为(Mg_(0.7)Zn_(0.3))TiO_3(MZT)、Ca_(0.61)La_(0.26)TiO_3(CLT),第二相为(Mg_(0.7)Zn_(0.3))Ti_2O_5;升温速率15℃/min,烧结温度1 275℃,保温时间20min时,陶瓷微波介电性能优良:介电常数εr=26.21,品质因数与频率之积Q·f=120 000GHz,频率温度系数τf=-3×10^(-6)/℃。The（1-x）（Mg_（0.7）Zn_（0.3））TiO_（3-x）（Ca_（0.61）La_（0.26））TiO_3（MZT-CLT,x=0.13）system dielectric ceramics were prepared by the microwave sintering method.The effects of microwave sintering process on the sintering behavior,microstructure,phase composition and microwave dielectric properties of MZT-CLT ceramics were investigated.The results show that MZT-CLT ceramics exhibited mixed phases of（Mg_（0.7）Zn_（0.3））TiO_3 and Ca_（0.61）La_（0.26）TiO_3 as the main phase,and the second phases was（Mg_（0.7）Zn_（0.3））Ti_2O_5.When the heating rate was 15 ℃/min,the MZTCLT ceramics exhibited excellent micro-wave dielectric properties of dielectric constantεr=26.21,product of quality factor and frequency Q·f =120 000 GHz frequency temperature coefficientτf=-3×10-6/℃sintered at 1 275℃for 20 min.

关 键 词：(1-x)(Mg(0.7)Zn(0.3))TiO(3-x)(Ca(0.61)La(0.26))TiO3(MZT-CLT x=0.13) 微波烧结 介质陶瓷 介电性能 

分 类 号：TM28[一般工业技术—材料科学与工程]