Abstract:The aim of this work was to synthesise nanopowders by laser pyrolysis in order to elaborate Si 3 N 4 -SiC nanocomposites exhibiting a high ductility at high temperature. The synthesis of SiCN and SiCNYAlO nanopowders with a good thermal stability has been developed from a liquid mixture based on hexamethyldisilazane with a gaseous precursor (silane, SiH 4 ) and ammonia. Si 3 N 4 -SiC nanocomposites exhibiting almost theoretical density have been elaborated by hot pressing under 35 MPa at 1600°C either from SiC… Show more
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