فهرست نشریات علمی دسترسی آزاد ایران

MgAl2O4 is one of the most concentrated spinels, which possesses many applications as an important refractory compound in the fields of steel-making industries. In this research, MgAl2O4 refractory materials were synthesized via the employment of combustion and solid-state approaches. To produce this material through combustion synthesis, aniline was used as a fuel. The XRD spectra showed that the synthesized materials via combustion approach include amorphous products while well crystallized cubic phases are formed within solid-state procedure. The SEM images indicated that the utilization of combustion and solid-state approaches leads to the production of MgAl2O4 materials with the average particle sizes of 40 nm and 70 μm, respectively. The DTA/TGA results of the combustion synthesized MgAl2O4 confirmed a considerable weight loss of 15.1 % within heating to 550 °C. Additionally, the exothermic peaks at 126 and 380 °C are related to the elimination of the organic compounds of the combustion-synthesized materials. Based on the obtained results, although both combustion and solid-state approaches can successfully synthesize MgAl2O4 refractory materials, the combustion method is more recommended due to its ability to produce finer, uniform nano-sized particles with higher surface area and reduced agglomeration problems, making it a superior route for refractory applications.