Preparation process of nitrides and oxynitrides of silicon, aluminum and magnesium with vermiculite-based fibrous morphology.

摘要

METHOD FOR PREPARING nitrides and silicon oxynitride, aluminum and magnesium Fibrous morphology FROM VERMICULITA. THE OBJECT OF THE invention is a process for preparing a ceramic raw material. This procedure INTERCALA THE ORGANIC Acrylonitrile molecule in a phyllosilicate (vermiculite), IN WHICH PREVIOUSLY HAS BEEN OVERLAYING CHLORIDE N-butylammonium. THE MONOMER IS SUSCEPTIBLE OVERLAYING polymerised phyllosilicate BETWEEN BLADES FOR COMPLEX MINERAL-butylammonium phyllosilicate-polyacrylonitrile. THIS COMPOUND Precursor, ONCE CYCLING The polymer in the interlaminar space, is subjected to reduction carbothermic in nitrogen flow, resulting in a MATTERS FIRST CERAMIC CONTAINING nitrides and silicon oxynitride, aluminum and magnesium (B-SIALON, B-nitride, and silicon nitride and magnesium) Fibrous morphology. The products obtained by the process of the invention have application as synthesis MATERIAPRIMA CERAMICS WITH HIGH PERFORMANCE EXPERIENCED thermomechanical.