Efecto de tratamiento térmico en aleaciones feal1% at li expuestas a pruebas de oxidación en diferentes temperaturas
Abstract
La adición de Li en aleaciones intermetalicas base Fe3Al ayuda en la mejora de propiedades mecánicas y resistencia a la corrosión. Las aleaciones se producen con técnicas convencionales de vaciado usando crisoles de SiC y se someten a un tratamiento térmico de 400ºC por 144h. Se realizaron pruebas de oxidación de alta temperatura en termobalanza con atmósfera estática a temperaturas de 650, 800 y 900 ºC las cuales indicaron una diferencia en la cinética de oxidación entre las muestras con tratamiento térmico y sin el. Por análisis de Microscopía electrónica de barrido se pudo ver que la capa de oxidación es más uniforme cuando se tiene tratamiento térmico.Downloads
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