Oxide based ceramic matrix composites for high temperature aerospace sealing applications

Thesis

This thesis looks at the viability of using oxide based ceramic matrix composites for high temperature gas turbine sealing applications. Two material systems namely Nextel312/SiOC, Nextel 312 fibre with SiOC matrix, and Nextel720/Alumina, Nextel 720 fibre with alumina matrix, were studied in detail and modified in order to produce CMC variants that could perform adequately as seals materials.

Nextel 312/SiCO composites were optimised for sealing applications at service temperature...

Expand abstract

Authors: Pirzada, TJ

• Type of award: DPhil
• Level of award: Doctoral
• Awarding institution: University of Oxford
• Language: English
• Keywords: Oxide-Oxide CMCs; X-ray tomography; Aerospace seals; Creep testing; Synchrotron; Ceramic Matrix Composites, Oxide-Oxide CMCs, Aerospace seals, Gas turbines, Creep, X-ray Tomography, TEM, SEM, Digital Volume Correlation, High Temperature X-ray Tomography, Synchrotron; Digital Image Correlation; Digital Volume Correlation; Elevated temperature X-ray Tomography
• Subjects: Aerospace engineering; Materials science