Microstructural Development and Phase Equilibria During Solidification in a Multi-Component Oxide System

这项建议有两个明确的目标。一个是研究陶瓷材料凝固过程中的微观结构发展，其中多个相采用多面形貌。本研究选用硅-镁-铝-钙（SMAC）四组分硅酸盐体系。第二个目标是利用先前开发的计算机辅助设计（CAD）程序更好地理解多组件系统的可视化表示。%%%%本建议研究定向凝固过程中微观组织的发展。将采用浮动区技术。先前开发的计算机辅助设计（CAD）程序将进行修改，以处理组件大于4个的系统。该研究将有助于更好地理解凝固过程中的相平衡和形态发展。

This proposal has two stated objectives. One was to examine the microstructural development during solidification of a ceramic material in which more than one phase adopts a faceted morphology. A four component silicate system of silica-magnesia-alumina-calcia (SMAC) was selected for this study. The second objective was to gain a better understanding of the visual representation of multicomponent system with a previously developed computer aided design (CAD) program. %%%% This proposal studies the microstructural development during directional solidification. The floating zone technique will be employed. A previously developed computer aided design (CAD) program will be modified to handle systems with components greater than 4. This study will bring better understandings of phase equlibria and the morphological development during the solidification.