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Thesis

Measuring and understanding grain boundary properties of engineering ceramics

Abstract:

This thesis aims to measure the mechanical properties of ceramics on the microscale using microcantilever beams. Focussed Ion Beam milled triangular cross-sectional beams (approximately 3 x 5 x 20µm) were fractured using a nanoindenter to measure the Young’s modulus, fracture strength, and fracture toughness. By developing the technique with a sapphire bicrystal, it was found that the mechanical properties could be successfully ascertained if correction factors were used. Experiments and t...

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Institution:
University of Oxford
Oxford college:
St Edmund Hall
Department:
Mathematical,Physical & Life Sciences Division - Materials

Contributors

Role:
Supervisor
Publication date:
2013
Type of award:
DPhil
Level of award:
Doctoral
Awarding institution:
Oxford University, UK
URN:
uuid:312cd97f-8680-4c02-b162-c0c7282bd343
Local pid:
ora:8472

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