Title of article :
Synthesis of Al_2O_3-ZrO_2 nanocomposite by Mechanical activated self-propagating high temperature Synthesis and ignited via laser
Author/Authors :
ganjali, m. materials and energy research center (merc), كرج, ايران , vaezi, m.r. materials and energy research center (merc), كرج, ايران , tayebifard, s.a. materials and energy research center (merc), كرج, ايران , asgharpour, s. materials and energy research center (merc), كرج, ايران
Abstract :
Al inf 2 /inf O inf 3 /inf -ZrO inf 2 /inf composite has unique properties such as high toughness, high wear resistant and relative low thermal expansion. In this study, nanocomposite of Al inf 2 /inf O inf 3 /inf -ZrO inf 2 /inf was produced by Mechanical activated Self propagating High-temperature Synthesis (MASHS) using laser beam for ignition. Al and ZrO inf 2 /inf 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) CO inf 2 /inf 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.
Keywords :
High , temperature Synthesis (MASHS) , Laser , Mechanical Activated Self , propagation , Nano , composite, Al2O3 , ZrO2
Journal title :
International Journal of Engineering
Journal title :
International Journal of Engineering
