Servicios Personalizados
Revista
Articulo
Indicadores
Citado por SciELO
Accesos
Links relacionados
Citado por Google
Similares en SciELO
Similares en Google
Compartir
Producción + Limpia
versión impresa ISSN 1909-0455
Resumen
MONTOYA CARVAJAL, Juan Fernando; CHAVARRIAGA MIRANDA, Edgar Andrés y VILLADA GIL, Stiven. Synthesis of spinel zncrxfe2-xo4 (0 ≤ x ≤ 1) by combustion in solution and thermodynamic study of phase stability. Rev. P+L [online]. 2018, vol.13, n.2, pp.119-132. ISSN 1909-0455. https://doi.org/10.22507/pml.v13n2a12.
Introduction:
Spinels are metal oxides generally used for their chemical, electrical and magnetic properties. The occupation of transition metals in tetrahedral and octahedral positions generates characteristics of technological interest and the study of the interaction of the material with external fields is motivating and justifiable. The synthesis of spinels has commonly been using the traditional method (ceramic), but to obtain better control in the particle size alternative methods have been chosen, among them the method of combustion in solution.
Objective:
Synthesize the spinel by the combustion method in solution and study the phase transitions as a function of temperature.
Materials and methods.
The compound was synthesized (for x = 0, 0.2, 0.4, 0.6, 0.8, 1.0) by combustion in solution, using metallic nitrates and glycine as fuel, generating an ignition around 1500 ° C approximately.
Results:
The samples were characterized morphologically (SEM), compositionally (EDS), structurally (XRD), thermogravimetrically (TGA) and calorimetrically (DSC). The characterization was carried out for precalcined samples (without thermal treatment), heated to 750 and 850 ° C, this in order to compare the results obtained in the characterizations of the compounds and thereby identify the physical changes generated by the formation of secondary phases.
Palabras clave : spinel; combustion in solution; heat treatment; phase transition.