Grain Boundaries in Ceramic Materials: Amorphous Phases and Interfacial Bonding (Materials Research)

这是一项研究计划拨款， 妇女机会方案。 研究的目的 是研究陶瓷晶粒结合的基本方面 边界 存在于晶界的力将 直接用新仪器测量， 将两个陶瓷表面结合在一起所需的力， 把他们分开。 这些力将被测量为 晶体陶瓷表面的晶体方向。 扫描电子显微镜和分析透射电子显微镜 显微镜也将用于表征陶瓷晶体 和非晶晶界。 微裂纹扩展和 还将测量边界的电特性。 没有这种直接的测量排斥/吸引力 两个晶体表面之间的力仍然是可能的。 表面力装置提供了一个令人兴奋的机会， 获得有关陶瓷物理性能的新信息 晶界和非晶晶界的作用 阶段。

This is a Research Planning Grant under the Research Opportunities For Women Program. The objective of the research is to study the fundamental aspects of bonding at ceramic grain boundaries. The forces that exist at the grain boundaries will be measured directly with a new instrument which determines the forces required to bring two ceramic surfaces together and then separate them. The forces will be measured as a function of crystallographic direction in the crystalline ceramic surfaces. Scanning electron microscopy and analytical transmission electron microscopy will also be used to characterize the ceramic crystals and the amorphous grain boundaries. Microcrack propagation and electrical properties will also be measured for the boundaries. No such direct measurement of the repulsive/attractive forces between the two crystal surfaces has yet been possible. The surface forces apparatus provides an exciting opportunity to obtain new information on the physical properties of ceramic grain boundaries and the role of the amorphous intergranular phases.