Articles - Synthesis and comparison of MgAl2O4-Ti (C, N) composites using aluminothermic-carbothermal reduction and molten salts routes
- Elaheh Khosh Omida, Rahim Naghizadehb,* and Hamid Reza Rezaiec
- a Department of material Eng., Science and Research Branch, Islamic Azad University, Tehran, Iran b School of Metallurgy & Materials Engineering, Iran University of Science and Technology (IUST), Tehran, Iran c School of Metallurgy & Materials Engineering, Iran University of Science and Technology (IUST), Tehran, Ira
Abstract
MgAl2O4-Ti (C, N) composites were synthesized through aluminothermic-carbothermal reduction and molten salts synthesis (MSS) routes in coke bed conditions. The phases were characterized using X-ray diffraction (XRD) and microstructures of composites were investigated by scanning electron microscopy (SEM). The results showed that the synthesis temperature of MgAl2O4-Ti (C, N) was decreased about 300 oC in MSS method in comparison with aluminothermic-carbothermal reduction. The KCl and NaCl salts proved better transportation path for reactant species and accelerate composite formation and also establish the microstructure with homogenous and fine grains.
Keywords: MgAl2O4-Ti (C, N) composite ceramic, Coke bed, Molten salt.
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