CAJ | 학술논문

采用传统固相法制备（1-x）Ca5 Zn4（VO4）6-xCa0．8 Sr0．2 TiO3（0．5≤x≤0．8）系陶瓷，并研究其烧结特性、晶相组成、显微组织和微波介电性能变化规律。用X射线衍射仪（XRD）和扫描电子显微镜（SEM）分析陶瓷的晶相组成和显微组织，采用闭腔法测量其微波介电性能。研究表明，随着Ca0．8 Sr0．2 TiO3含量增加，陶瓷的εr 和τf 值逐渐增大，而Q×f值逐渐减小。875℃/5 h烧结0．3Ca5Zn4（VO4）6-0．7Ca0．8Sr0．2TiO3名义陶瓷具有最佳微波介电性能，即εr＝13．5，Q×f＝12800 GHz，τf＝3 ppm/℃。
채용전통고상법제비（1-x）Ca5 Zn4（VO4）6-xCa0．8 Sr0．2 TiO3（0．5≤x≤0．8）계도자，병연구기소결특성、정상조성、현미조직화미파개전성능변화규률。용X사선연사의（XRD）화소묘전자현미경（SEM）분석도자적정상조성화현미조직，채용폐강법측량기미파개전성능。연구표명，수착Ca0．8 Sr0．2 TiO3함량증가，도자적εr 화τf 치축점증대，이Q×f치축점감소。875℃/5 h소결0．3Ca5Zn4（VO4）6-0．7Ca0．8Sr0．2TiO3명의도자구유최가미파개전성능，즉εr＝13．5，Q×f＝12800 GHz，τf＝3 ppm/℃。
In this paper (1-x)Ca5Zn4(VO4)6-xCa0.8Sr0.2TiO3(0.5≤x≤0.8)ceramics are pre-pared by the conventional solid-state reaction method,and its sinterability,crystal structure,mi-crostructure and microwave dielectric properties of the ceramics are also investigated.The crystal phase and microstructure are analysed by X-ray Diffraction(XRD)and scan electronic microscope (SEM),the microwave dielectric properties are measured with closed cavity method.Results show that theεr andτf increase,but Q×f value decrease with the increase in x value.The 0.3Ca5Zn4(VO4)6-0.7Ca0.8Sr0.2TiO3 nominal ceramics sinters at 875 ℃ for 5 h exhibits excellent microwave dielectric properties:εr= 13.5,Q×f= 12 800 GHz,τf= 3 ppm/℃.