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espanolLos materiales piezoelectricos son ampliamente utilizados en dispositivos electronicos. Tradicionalmente, para tales aplicaciones, se han utilizado diversos materiales a base de plomo; sin embargo, debido al dano causado por este elemento, se han desarrollado materias primas con caracteristicas similares que no causen un impacto negativo a la sociedad o al medio ambiente. Un material con estas caracteristicas es el niobato de potasio y sodio K0.5Na0.5 Nbo3. En este articulo, se realizaron analisis termogravimetricos, estructurales y microestructurales para los polvos del sistema K0.5Na0.5 Nbo3 obtenidos mediante mezcla de oxido, con el objetivo de determinar el efecto y la eficiencia de la molienda utilizando molinos de bolas, planetario y horizontal en la etapa de mezcla de los reactivos, para la produccion del polvo final. Se determino que el uso de la molienda horizontal y la calcinacion a 900 °C crean las condiciones optimas para obtener polvos con una estructura y microestructura adecuadas para continuar los procesos de densificacion y/o dopaje. EnglishPiezoelectric materials are widely used in electronic devices and, traditionally, various lead-based materials have been implemented in such applications. However, because of the damage caused by lead, other materials with similar characteristics that do not cause a negative impact on human health and the environment have been developed. A material with those characteristics is potassium-sodium niobite K0.5Na0.5 Nbo3. In this study, we investigate the thermogravimetric, structural, and microstructural properties of powders of such system obtained through oxide mixing with the aim of establishing the effect and efficiency of grinding (using a horizontal and a planetary ball mill grinder) on the production of the final material. It was determined that horizontal grinding and calcination at 900°C create the optimal conditions for obtaining K0.5Na0.5 Nbo3 powders, by oxide mixing, with the adequate structure and microstructure to continue the densification and/or doping processes.

Grinding methods effects on the synthesis of Potassium-Sodium Niobate powders by oxide mixing