A Predictive Theory of Kinetic Demixing in Engineering Ceramics

工程陶瓷中动力学分层的预测理论

• 批准号: DP0449503
• 负责人: Em/Prof Irina Belova
• 金额: $ 71.54万
• 依托单位: The University of Newcastle
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2004
• 资助国家: 澳大利亚
• 起止时间: 2004-01-01 至 2009-07-29
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0449503
• 关键词: Predictive; Theory; Kinetic; Demixing; Engineering

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.

技术进步带来了对新的工程陶瓷和现有工程陶瓷的改进的需求。工程陶瓷的性能与其原子组成和分布密切相关。然而，由于应力、电场或氧气梯度，在高温下使用时会发生组分的分离或分层。分层会导致性能和寿命的重大损失。本计画将发展一个强健且多用途的分层理论，以提高工程陶瓷的使用寿命。它还将指导分层的有意操作，以产生具有技术兴趣的新特性的新型成分梯度工程陶瓷。