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The effects of hydrogen ion irradiation on mechanical properties of SiC-based materials using an MC40 cyclotron

Baldock, Philip Peter George (2015)
M.Res. thesis, University of Birmingham.

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An MC40 cyclotron was outfitted for performing focused ion beam exposure to materials that are being investigated for use in the nuclear industry. Apparatus in the form of a vacuum chamber with internal heating element and cooled aperture system was installed and used successfully. Several silicon carbide based materials were processed into samples and tested mechanically as received. Analogous samples were prepared and exposed to proton irradiation either as 1 μA per cm\(^2\) for 5 hours in air at 400\(^o\)C, or 0.3 μA per cm\(^2\) for 4 hours in vacuum at 85 \(^o\)C. After irradiation these were tested mechanically by the same methods as non-irradiated samples so that changes between non-irradiated and irradiated samples could be investigated. Computational models were constructed to estimate the temperatures reached in the samples during irradiation and the TRIM software was used to model displacement damage through the materials tested. Within the accuracy of the experiments performed, no significant change in flexural strength of composite materials was observed but a significant increase was found in the tensile strength of KD-1 fibres after irradiation.

Type of Work:M.Res. thesis.
Supervisor(s):Connolly, Brian J. and Ponton, Clive B
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:Department of Metallurgy and Materials
Subjects:QC Physics
TN Mining engineering. Metallurgy
Institution:University of Birmingham
ID Code:5682
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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