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

这项提议有两个明确的目标。一种是研究陶瓷材料在凝固过程中的微观结构发展，在这种陶瓷材料中，有多个相采用多面体的形态。选择了硅-镁-铝-钙四元硅酸盐体系(SMAC)进行了研究。第二个目标是通过先前开发的计算机辅助设计(CAD)程序来更好地理解多组分系统的可视化表示。%本方案研究了定向凝固过程中的组织发展。将采用浮动区技术。以前开发的计算机辅助设计(CAD)程序将被修改以处理成分大于4的系统。这项研究将使人们更好地理解相平衡和凝固过程中的形态发展。

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.