GOALI: Fabrication and Characterization of Controlled Microstructure Glass Composites for Electromagnetic Applications

非技术描述：该项目是先进复合材料有限责任公司（ACM）和佐治亚理工学院之间的合作成果。该项目的主要目标是开发一种制造方法-制造可用于各种电子应用的耐高温导电涂层所需的材料组合。虽然工业合作伙伴专注于使用碳化硅（SiC）基材料作为微波炉烹饪插入物，但该项目开发的方法将适用于所有类型的玻璃复合材料。最终的复合材料性能将取决于所使用添加剂的性能，这可能使它们在电子、通信、军事和国防、工业加热和其他新型家用加热和烹饪器具等领域的许多工业应用中发挥作用。除了支持几名研究生和本科生研究人员外，该项目还包括在夏季期间支持高中教师和/或来自非研究或少数民族服务机构的教职员工，目的是增加他们对这一令人兴奋的研究领域的理解。技术细节：该项目的主要目的是制造具有最佳性能的不同填料含量和不同厚度的导电玻璃复合材料。目标之一是确定理想的厚度和最低的填充物含量，这将允许制造透明导电玻璃涂层，可以沉积在各种基板类型上。纳米形式的许多不同填充材料的广泛可用性，结合陶瓷材料快速烧结的最新发展，以及对如何控制渗透的更详细的了解，使得现在是开展该项目的有利时机。目前使用的大块固结方法包括热压、无压烧结和电场辅助烧结。薄膜的形成方法包括纺纱涂布和丝网印刷。利用扫描电子显微镜（SEM）、原子力显微镜（AFM）、扫描透射电子显微镜（STEM）和x射线显微断层扫描技术对薄、厚玻璃复合材料试样进行了表征。测量了直流和交流电阻率以及宽带介电、光学和磁性能。将加工-结构-性能关系建模为厚度、玻璃类型、填料类型和固结方法的函数，有望更好地理解如何控制这些类型材料的电磁性能。2名博士生和若干名硕士生和（或）本科生在本项目中工作；这种培训有助于这一前沿领域的未来劳动力。

NON-TECHNICAL DESCRIPTION: This project is a collaborative effort between Advanced Composite Materials LLC (ACM) and the Georgia Institute of Technology. The main goal of this project is to develop a fabrication method - material combination necessary to make high temperature resistant conductive coatings that could be used for a variety of electronic applications. While the industrial partner is focused on using silicon carbide (SiC)-based materials as microwave oven cooking inserts, the methodology being developed in this project will be useful for all types of glass composites. The final composite properties will depend on the properties of the additives used, which could make them useful for many industrial applications in fields such as electronics, communications, military and defense, industrial heating, and other novel household heating and cooking appliances. In addition to supporting several graduate and undergraduate researchers, the project includes support of high school teachers and/or faculty members from non-research or minority-serving institutions during the summer months, with the purpose of increasing their understanding in this exciting area of research. TECHNICAL DETAILS: The main aim of this project is to fabricate conductive glass composites with different filler content and varying thicknesses with optimal properties. One of the goals is to determine the ideal thickness and the lowest filler content possible that will permit the fabrication of transparent conductive glassy coatings that could be deposited onto a variety of substrate types. The wide availability of many different filler materials in nanosized form, combined with recent developments in the fast sintering of ceramic materials, and a more detailed understanding of how to control percolation, makes this a propitious time to carry out this project. Bulk consolidation methods that are being used include hot-pressing, pressureless sintering and electric field assisted sintering. Thin film formation methods being used include spin coating and screen printing. The thin and thick glass composite specimens are being characterized using scanning electron microscopy (SEM), atomic force microscopy (AFM), scanning transmission electron microscopy (STEM) and X-ray microtomography. The dc and ac resistivity as well as the broadband dielectric, optical and magnetic properties are being measured. Modeling of the processing-structure-property relationships as a function of thickness, glass type, filler type and consolidation method is expected to reveal a better understanding of how to control the electromagnetic properties of these types of materials. Two doctoral students and several masters and/or undergraduate research students are working on this project; this training contributes to the future workforce in this cutting-edge field.