Journal of Advanced Materials and Technologies

Journal of Advanced Materials and Technologies

Effect of addition of nano Magnesuim oxide on the mechanical properties of Alumina/ Silicon Carbides nano composites synthesized by mechanical alloying

Authors
Mohammad Reza Vaezi 1
Nazila Ashrafi 2
Ali Nemati 2
Said Baghshahi 2
Amir Hassanjani Roshan 3
1 Materials and Energy Research Center, Division Of Advance Materials and Nanotechnology, Karaj , Iran.
2 Islamic Azad University, Science and Research Branch, Tehran, Iran.
3 Materials and Energy Research Center, Division Of Advance Materials and Nanotechnology, Karaj,Iran.
10.30501/jamt.2637.70323
Abstract
The purpose of this study, Alumina and Silicon carbide-based nano-composite processing is due to the special properties and wide applications of these nano-composites have attracted much attention in various industries. In this paper, the mechanical properties of Al2O3 -4.1% wt SiC nanocomposites sintered without pressure by adding a
weight percent of nano-MgO has been studied .Nano powders of α-Al2O3,β-SiC and MgO were used as starting materials in this study .At First, a certain amount of nano-powders Al2O3 - SiC for the first sample and Al2O3 - SiC-MgO for a second sample to powder ratio of 20 to 1 by a planetary ball mill for 4 h speed 250 RPM mixture and the resulting powder Mesh 150 Mu passes and was calcined at 600 C ˚. The effect of MgO nano powder obtained samples for mechanical properties of nano-composites, Al2O3 - SiC were tested for hardness.
Keywords
Nano composite
Mechanical properties
Hardness
Sintering
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  • Receive Date 27 January 2014
  • Revise Date 28 February 2016
  • Accept Date 15 May 2016