摘要铜铌钛(Ti2。31Cu0。23Nb0。46O6)微波介质陶瓷,是一种新型微波介质陶瓷。本文主要通过固相法路线合成,进行不同浓度的ZnO掺杂,并且在925℃-1025℃下烧结五小时下得到对应的样本,对其物理性能和微波介电性能进行研究。这种方法获得的陶瓷样本的微波介电性能主要与样本掺杂后的稠化程度和烧结状况有关。特别地,在975℃温度环境下烧结得到的4%陶瓷样品具有4。33g/mm3的密度。并且,975℃下烧结得到的陶瓷表现出最佳的微波介电性能,并且在添加了4%ZnO是得到了89。98的最高的介电常数。微波介质主要性能参数有:介电常数、品质因数、谐振频率温度系数。本文主要对微波介质陶瓷的物理性能参数和介电常数进行了研究讨论。86377
毕业论文关键词:低温共烧陶瓷、微波介质陶瓷、微波介电性能
Abstract Ti2。31Cu0。23Nb0。46O6(CNT)microwave dielectric ceramic is a type of microwave dielectric ceramics。 In this paper, the ZnO doped with different concentrations were synthesized by solid state method, and the corresponding samples were obtained at 925℃-1025℃ for five hours。 The physical properties and microwave dielectric properties of the samples were studied。 The microwave dielectric properties of the ceramic samples obtained by this method are mainly related to the density of the samples and the sintering condition。 In particular, 4% ceramic samples sintered at a temperature of 975 degrees Celsius have a density of 4。33g/mm3。 Also, the ceramics sintered at 975℃ showed the best microwave dielectric properties, and the 4%ZnO was obtained at the highest dielectric constant of 89。98。 The main performance parameters of microwave medium are: dielectric constant, quality factor, temperature coefficient of resonant frequency。 In this paper, the physical properties and dielectric constant of microwave dielectric ceramics are investigated
Keywords:low-temperature co-fire ceramics、microwave dielectric ceramics、microwave dielectric properties
目录
第一章 绪论 1
1。1引言 1
1。2微波介质陶瓷发展历史 3
1。3微波介质陶瓷的主要体系 3
第二章 实验方法 8
2。1实验目的 8
2。2微波介质陶瓷的合成方法 8
2。3实验仪器 9
2。4原料选取 9
2。5实验流程 10
2。6数据测量 12
2。5。1物理性能测量 12
2。5。2介电性能测量 12
第三章 结果与讨论 13
3。1 Ti2。31Cu0。23Nb0。46O6陶瓷测得的各项性能参数 13
3。2烧结温度对Ti2。31Cu0。23Nb0。46O6陶瓷物理性能的影响 16
3。3烧结温度对Ti2。31Cu0。23Nb0。46O6陶瓷介质损耗的影响 19
3。4烧结温度对Ti2。31Cu0。23Nb0。46O6陶瓷介电性能的影响 20
3。5添加剂浓度对Ti2。31Cu0。23Nb0。46O6陶瓷介电性能的影响 22
结 论 23
致 谢 24
参考文献 25
第一章 绪论
1。1引言