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handle: 10261/4406
[ES] Las cerámicas basadas en el Si3N4 poseen unas extraordinarias propiedades físicas y mecánicas que permiten su uso como material estructural avanzado en ingeniería. Se ha utilizado la técnica de ATVC (Análisis Térmico a Velocidad de Reacción Controlada) para preparar dicho compuesto por reducción carbotérmica de sílice en atmósfera de nitrógeno y estudiar la influencia de la naturaleza de los reactivos en el producto de la reacción. Los resultados obtenidos muestran que la elección de reactivos de elevadas superficies específicas no es garantía para obtener nitruro de silicio con una morfología homogénea y de pequeño tamaño de partícula siendo recomendable el empleo de reactivos que a la temperatura de reacción posean superficies específicas lo más parecidas posibles.
[EN] Ceramics based on silicon nitride have unusual physical and mechanical properties that make them materials of technological importance for their use as structural material. Silicon nitride has been prepared by carbothermal reduction of silica under nitrogen atmosphere using the control rate thermal analysis (CRTA). The employ of this method allows to study the influence of the microstructure of the starting materials on the final product avoiding the influence of others experimental conditions. The results show that products of highest homogeneity and smallest particle sizes will be achieved when starting materials of similar.
Peer reviewed
Silicon nitride, análisis térmico, Análisis térmico, Clay industries. Ceramics. Glass, Carbothermal reduction, Nitruro de silicio, nitruro de silicio, TP785-869, silicon nitride, Reducción carbotérmica, Thermal analysis, thermal analysis
Silicon nitride, análisis térmico, Análisis térmico, Clay industries. Ceramics. Glass, Carbothermal reduction, Nitruro de silicio, nitruro de silicio, TP785-869, silicon nitride, Reducción carbotérmica, Thermal analysis, thermal analysis
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