Abstract
The purpose of this study is to contribute to the development and safety design of plasma facing components for fusion reactor devices. We evaluated the thermal shock resistance and the thermal shock fracture toughness of a joining material which was used to join a carbon fiber reinforced carbon composite(C/C composite) to oxygen-free copper. We also examined the microstructures of the joining layers using a scanning electron microscope before and after thermal shock tests. The joining material did not fracture during the thermal shock tests. However, thermal cracks and delamination cracks were observed in the joining layers.
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