Abstract
The understanding of nanoscale interactions of nuclear materials will help to mastering the complex behavior of actinides and of fission products, and the interfacial behavior of fuel-cladding under extreme conditions. Ultrafine grained and nanostructured engineering materials are also suggested as protective armors on the plasma-facing first wall of D-T fusion power plants. We review the constitution and preparation by arc-melting and ball milling of ultrafine grained materials for the advanced nuclear reactor fuels UC, UC-W, UN, UN- Mo , and UN-W. We report also the preparation of the first wall armour materials nano-W, nano W-Y alloys, nano-graphite, and nano- B4C by high energy ball milling and their characterization by metallography, XRD, DSC and HRTEM.
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