U.S.-Germany Cooperative Research: Geometric, Metric and Homotopical Aspects of Low Diminensional Cell Complexes and Manifolds

这项研究旨在研究以Si-Al-Y-O-N系晶相为基础的高科技陶瓷。更好地了解它们的热力学性质可以导致合成具有更好性能的低成本材料。该项目结合了普林斯顿的量热小组和斯图加特的材料和加工小组的专业知识。斯图加特小组将合成和表征样品，而普林斯顿小组将进行高温溶液量热法，以获得晶体的形成热。得到的数据将被合并到数据库中，并用于计算相平衡、结晶路径和晶体-化学关联。

The proposed research investigates high-tech ceramics based on crystalline phases in the Si-Al-Y-O-N system. Better knowledge of their thermodynamic properties could lead to the synthesis of lower-cost materials with better properties. This project combines the expertise of the calorimetry group at Princeton with the materials and processi ng group in Stuttgart. The Stuttgart group will synthesize and characterize samples, while the Princeton group performs high-temperature solution calorimetry to obtain enthalpies of formation of the crystals. The data derived will be incorporated into databases and used to calculate phase equilibria, crystalline paths, and crystal-chemic al correlations.