Synthesis of Al_2o_3-Zro_2 Nanocomposite By Mechanical Activated Self-Propagating High Temperature Synthesis and Ignited Via Laser

Al2o3-zro2composite has unique properties such as high toughness, high wear resistant and relative low thermal expansion. in this study, nanocomposite of al2o3-zro2 was produced by mechanical activated self propagating high-temperature synthesis (mashs) using laser beam for ignition. al and zro2 powders were mixed in the mole ratio of 1:1 and milled for 1, 3 and 6 hours. the mixtures were pressed and were exposed by continuous wave (cw) co2 laser for combustion reaction to start. in order to characterize the products, x-ray diffraction (xrd), scanning electron microscopy (sem) and energy-dispersive x-ray spectroscopy (edx) were implemented. the xrd results show that samples have α-alumina and also cubic and monoclinic phases zirconium oxides together. the dendrite structures were formed during the process.