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.

This Article

  • 2013; 14(4): 445-447

    Published on Aug 31, 2013