A Predictive Theory of Kinetic Demixing in Engineering Ceramics

技术进步带来了对新的工程陶瓷的需求和对现有工程陶瓷的改进。工程陶瓷的性能在很大程度上取决于原子组分的组成和分布。然而，由于应力、电场或氧气梯度，在高温下使用时，部件会发生分离或分离。分流会导致性能和寿命的重大损失。该项目将开发一个强大和通用的分离理论，以提高工程陶瓷的寿命。它还将指导对分离的深思熟虑的操作，以产生具有新的技术感兴趣的新特性的成分分级工程陶瓷。

Technological advances bring demands for new engineering ceramics and the improvement of existing ones. The properties of engineering ceramics are critically dependent on the composition and distribution of atomic components. However, separation or demixing of the components occurs in-service at high temperatures as a result of stress, electric fields or oxygen gradients. Demixing causes a major loss of performance and longevity. This Project will develop a robust and versatile theory of demixing to enhance longevities of engineering ceramics. It will also guide the deliberate manipulation of demixing to generate novel compositionally-graded engineering ceramics having new properties of technological interest.