论文部分内容阅读
研究了BaO.Nd2O3.Ti O2-(Zr0.8Sn0.2)Ti O4复合体系的烧结性能、微观结构、相组成和微波介电性能。结果表明,BaO.Nd2O3.Ti O2-(Zr0.8Sn0.2)Ti O4复合体系可在1 200~1 260℃范围内烧结出致密的微波介质陶瓷材料,其相组成由BaO.Nd2O3.4Ti O2、BaO.Nd2O3.5Ti O2、Nd2Ti2O7、(Zr0.8Sn0.2)Ti O4及未知新相组成,而(Zr0.8Sn0.2)Ti O4由单一晶相组成;复合体系的介电常数、介电损耗、频率温度系数同复合系统各相的配比有关,其中介电常数、频率温度系数基本符合理论计算值而介电损耗则高于理论值;复合系统中出现未知相具有高介电常数、高介电损耗的特征。
The sintering properties, microstructure, phase composition and microwave dielectric properties of BaO.Nd2O3.Ti O2- (Zr0.8Sn0.2) Ti O4 composites were investigated. The results show that the compact microwave dielectric ceramic material can be sintered in the range of 1 200 ~ 1 260 ℃ with BaO.Nd2O3.Ti O2- (Zr0.8Sn0.2) Ti O4 composite system. The phase composition of BaO.Nd2O3.4Ti O2 , BaO.Nd2O3.5Ti O2, Nd2Ti2O7, (Zr0.8Sn0.2) Ti O4 and unknown new phases, while (Zr0.8Sn0.2) Ti O4 consists of a single crystal phase. The dielectric constant of the composite system, dielectric Loss and frequency temperature coefficient are related to the proportion of each phase in the composite system. The dielectric constant and frequency temperature coefficient are in line with the theoretical value and the dielectric loss is higher than the theoretical value. In the composite system, the unknown phase has high dielectric constant, High dielectric loss characteristics.