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

GOALI：用于电磁应用的受控微结构玻璃复合材料的制造和表征

• 批准号: 1207323
• 负责人: Rosario Gerhardt
• 金额: $ 99.99万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-06-01 至 2019-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1207323&HistoricalAwards=false
• 关键词: GOALI; Fabrication; Characterization; Controlled; Microstructure

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.

非技术描述：这个项目是先进复合材料有限责任公司(ACM)和佐治亚理工学院的合作成果。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必需的材料组合。虽然工业合作伙伴专注于使用碳化硅(碳化硅)为基础的材料作为微波炉烹饪插入物，但该项目正在开发的方法将适用于所有类型的玻璃复合材料。最终的复合性能将取决于所使用的添加剂的性能，这将使它们在电子、通信、军事和国防、工业供暖以及其他新型家用加热和烹饪电器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的几个月里支持非研究性或少数族裔服务机构的高中教师和/或教职员工，目的是增加他们对这一令人兴奋的研究领域的了解。技术细节：本项目的主要目标是制备不同填料含量和不同厚度的导电玻璃复合材料，并具有最佳的性能。其中一个目标是确定理想的厚度和尽可能低的填充物含量，以便制造可以沉积在各种基材上的透明导电玻璃涂层。许多不同的纳米形式的填充材料随处可得，再加上陶瓷材料快速烧结的最新发展，以及对如何控制渗流的更详细了解，使现在是开展这一项目的有利时机。目前使用的块体固结方法包括热压、无压烧结和电场辅助烧结。正在使用的薄膜形成方法包括旋涂和丝网印刷。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射线显微层析技术对薄玻璃和厚玻璃复合材料样品进行了表征。测量了材料的直流和交流电阻率以及宽带介电、光学和磁学性能。作为厚度、玻璃类型、填料类型和固结方法的函数的工艺-结构-性能关系的建模有望揭示如何更好地理解如何控制这些类型材料的电磁性能。两名博士生和几名硕士和/或本科生正在从事这一项目；这一培训为这一尖端领域的未来劳动力做出了贡献。