Transformability and Toughenability of Zirconia Based Ceramics

本研究的目的是研究氧化锆基陶瓷相变增韧行为的基本问题。该计划包括：影响相变的化学和环境因素；力学行为--循环加载行为，复杂加载条件下的寿命预测，强度与韧性的关系，以及相变诱导的塑性；以及使用X射线(EXAFS和X射线衍射)、核磁共振、内耗和FTIR技术的微观结构和化学成分。力学性能研究将包括单轴拉伸/压缩和三轴弯曲测试。

The objective of this proposed research is to investigate fundamental issues concerning the behavior of transformation toughened zirconia-based ceramics. This program includes studies of: chemical and environmental factors affecting the transformation; mechanical behavior -- cyclic loading behavior, life predictions under complex loading conditions, strength versus toughness relationships, and transformation-induced plasticity; and, microstructures and chemistries using x-ray (EXAFS and XRD), NMR, internal friction, and FTIR techniques. Mechanical property studies will include uniaxial tension/compression and triaxial flexure testing.