High-Temperature Rheology of Continuous Fiber-Reinforced Ceramic Matrix Composites

本研究旨在研究连续聚合物的高温流变学， 纤维增强陶瓷基复合材料（CMC）。 它 使用分析模型来预测块体的蠕变响应 复合材料试样 然后将该模型与 蠕变实验的实验结果。 研究 重点是（1）研究不同的本构模型， 界面/界面相，（2）变形后的显微组织和 变形复合材料试样的微观化学分析，（3） 时间依赖性响应的表征，以及（4） 其他复合系统的方法。 初始系统是 SiC（NICALON）纤维与钙铝硅酸盐玻璃陶瓷 （Corning-CAS-III）基质复合材料。 %%%% 本研究结合实验和分析方法， 连续陶瓷基复合材料的高温流变性 这两种方法用于比较，并用于纠正和 互相扶持 这种研究可能会 适用性超出了所研究的材料系统。 它 可以为理解高温提供坚实的科学依据 CMC的流变性能 改进执行情况 CMC可以从本研究中预期。

This grant examined high temperature rheology of continuous fiber-reinforced ceramic matrix composites (CMC) materials. It uses an analytical model to predict the creep response of a bulk composite specimen. The model is then compared with the experimental results from the creep experiments. The research emphasizes (1) investigation of different constitutive models for the interface/interphase, (2) post-deformation microstructural and microchemical analyses of deformed composite specimens, (3) characterization of time-dependent responses, and (4) extension of the approaches to other composite systems. Initial system is a SiC (NICALON) fiber and calcium aluminosilicate glass-ceramic (Corning-CAS-III) matrix composite. %%%% This study combines experimental and analytical approaches to study high temperature rheology of continuous ceramic matrix composites. Both approaches are used for comparison and serve to correct and support each other. This kind of study can have possible applicability beyond the material system under investigation. It can provide a solid scientific basis to understand high temperature rheological properties of CMC. Improvements in the performance of CMC can be expected from this study.