Particle Aerosol Deposition and the Development of High Temperature Dielectric Ceramics

颗粒气溶胶沉积与高温介电陶瓷的发展

• 批准号: 2284222
• 金额: --
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2284222
• 关键词: Particle; Aerosol; Deposition; Development; Temperature

Aims. Investigation of a particle aerosol deposition manufacturing route to develop high temperature dielectric ceramics based on alkaline earth niobates with the tungsten bronze crystal structure.Objectives. Synthesise and analyse a range of compositions of doped, fully dense CBN by aerosol deposition Characterise microstructure using electron microscopy Characterise crystal phase content using X-ray diffraction Characterise dielectric propertiesd Correlate aerosol deposition conditions to structure and properties of the deposited thick films Understand the critical parameters controlling structure and properties Use the emerging knowledge to design a process whereby dielectrics can be produced with stable relative permittivity and low dielectric loss across the temperature range -55degreesC to 250degreesC and 300degreesC.

目标。探索一种颗粒气溶胶沉积法制备具有钨青铜晶体结构的碱土铌酸盐高温介质陶瓷的工艺路线。用气溶胶沉积法合成和分析一系列掺杂的、完全致密的CBN的成分用电子显微镜表征微观结构用X射线衍射表征晶体相含量用X射线衍射表征介电性能气溶胶沉积条件与沉积厚膜的结构和性能相关了解控制结构和性能的关键参数利用新兴知识设计一种工艺，使介电材料能够在-55摄氏度至250摄氏度和300摄氏度的温度范围内具有稳定的相对介电常数和低的介质损耗。