Nano-Sized Zirconium Carbides: Synthesis, Characterisation and Irradiation
| Autor: | Dominique Gosset, Christine Bogicevic, David Simeone, Mickaël Dollé, Fabienne Karolak, Guido Baldinozzi |
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| Rok vydání: | 2005 |
| Předmět: |
010302 applied physics
Zirconium Materials science Rietveld refinement Metallurgy Sintering chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Carbide Ion implantation Brittleness chemistry 0103 physical sciences Nano Irradiation Composite material 0210 nano-technology |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 1946-4274 0272-9172 |
| DOI: | 10.1557/proc-0908-oo04-05 |
| Popis: | The projects of a new generation of nuclear plants with improved yield and drastical reduction of waste production make necessary the development of materials able to withstand high temperature (1000-1200°C) in normal conditions. New materials such as the refractory transition metal carbides are then considered. These materials have a ceramic-like, brittle behaviour. Their mechanical properties might be improved by decreasing the particles size at a nanometer level. The behaviour under irradiation of such nano-sized materials have then to be compared with classical micro-sized ones. High density, nano-sized materials have been obtained by two different sintering techniques. In order to simulate neutron irradiation, the samples were irradiated with low energy heavy ions. Consequently, the damaged material has a low thickness (100-200 nm), requiring surface analysis methods. Here, the grazing incidence X-ray diffraction method is used. From a Rietveld analysis of the diffraction patterns, the micro-sized materials show a linear volume swelling in the range 20-40 dpa in the Zr sublattice. Nano- and micro-sized materials both show high internal distortions. |
| Databáze: | OpenAIRE |
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