湖北大学学报（自然科学版）
湖北大學學報（自然科學版）
호북대학학보（자연과학판）
2015年
3期
262-265
,共4页
方丹华%江娟%窦占明%陆超%章天金
方丹華%江娟%竇佔明%陸超%章天金
방단화%강연%두점명%륙초%장천금
CTLA陶瓷%物相%微波介电性能
CTLA陶瓷%物相%微波介電性能
CTLA도자%물상%미파개전성능
CTLA ceramics%phase%microwave dielectric properties
采用传统固相反应法制备xCaTiO3-（1－x）LaAlO3（0.55≤x≤0.69）（CTLA）陶瓷，研究CTLA陶瓷的物相，微观结构及微波介电性能．结果表明，烧结温度在1400℃时，陶瓷的微波性能最佳，介电常数在35~47之间，Q×f≥35000 GHz ．随着CaTiO3含量的增大，频率温度系数趋零，当x＝0.67时，陶瓷具有最佳的微波性能：εr=45，Q×f＝36684 GHz，τf＝6.02×10-6/℃.①
採用傳統固相反應法製備xCaTiO3-（1－x）LaAlO3（0.55≤x≤0.69）（CTLA）陶瓷，研究CTLA陶瓷的物相，微觀結構及微波介電性能．結果錶明，燒結溫度在1400℃時，陶瓷的微波性能最佳，介電常數在35~47之間，Q×f≥35000 GHz ．隨著CaTiO3含量的增大，頻率溫度繫數趨零，噹x＝0.67時，陶瓷具有最佳的微波性能：εr=45，Q×f＝36684 GHz，τf＝6.02×10-6/℃.①
채용전통고상반응법제비xCaTiO3-（1－x）LaAlO3（0.55≤x≤0.69）（CTLA）도자，연구CTLA도자적물상，미관결구급미파개전성능．결과표명，소결온도재1400℃시，도자적미파성능최가，개전상수재35~47지간，Q×f≥35000 GHz ．수착CaTiO3함량적증대，빈솔온도계수추령，당x＝0.67시，도자구유최가적미파성능：εr=45，Q×f＝36684 GHz，τf＝6.02×10-6/℃.①
xCaTiO3-(1-x)LaAlO3 ceramics(CTLA,0.55≤x≤0.69)were prepared by traditional solid state process .The crystal structure,microstructure and microwave dielectric properties of the prepared CTLA ceramics were investigated .The results showed that the CTLA ceramics sintered at 1 400℃exhibited excellent microwave properties:the dielectric permittivity within the range from 35 to 47,Q × f≥35 000 GHz .The temperature coefficient of resonance frequency being near to zero with the increase of LaAlO 3 molar concentration.At x=0.67 the optimal microwave properties were obtained:εr=45,Q×f=36 684 GHz,τf=6.02×10-6/℃.
