Mullite Whisker Enhanced Zirconia Toughened Alumina Ceramic Matrix Composite for High Temperature Applications
Public Deposited- Resource Type
- Creator
- Abstract
Ceramic Matrix Composites (CMC) are an attractive material for high temperature applications because they possess many of the high temperature capabilities of monolithic ceramics but also have enhanced mechanical properties due to their multi-phase structure. Zirconia Toughened Alumina (ZTA), as the matrix, has enhanced toughness, strength, and creep resistance over single phase alumina or zirconia. ZTA can further be enhanced by the incorporation of single crystal mullite whiskers due to their stability in oxidizing atmospheres at high temperatures. Mullite whiskers are grown through the molten salt method and incorporated into the ZTA matrix using a colloidal processing route. The addition of whiskers to ZTA has improved room temperature flexural strength by 120.0%, flexural strength at 1200°C by 53.8%, fracture toughness by 74.1%; but the whiskers have little effect on the hardness. Degradation of large whiskers was found during cyclic oxidation of ZTAw 1200 °C.
- Subject
- Language
- Publisher
- Thesis Degree Level
- Thesis Degree Name
- Thesis Degree Discipline
- Identifier
- Rights Notes
Copyright © 2014 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
- Date Created
- 2014
Relations
- In Collection:
Items
Thumbnail | Title | Date Uploaded | Visibility | Actions |
---|---|---|---|---|
robertson-mullitewhiskerenhancedzirconiatoughenedalumina.pdf | 2023-05-04 | Public | Download |