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Vol. 1, No. 2 (Summer 2015) 11-17   

Link: http://www.acerp.ir/Vol1/No2/3.pdf
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  The Comparison of MgO and TiO2 Additives Role on Sintering Behavior and Microstructures of Reaction-Sintered Alumina-Zirconia-Mullite Composite
S. Abdolazizi, R. Naghizadeh and S. Baghshahi
( Received: February 21, 2015 – Accepted: November 01, 2015 )

Abstract    Alumina-Mullite-Zirconia ceramic composites were prepared by reaction sintering of alumina, zircon mixture and the sintering aids of magnesia and titania at temperatures of 1400 and 1600 C for 2 hours. The development of different phases and microstructures of the composites were analysed to assess the relative influence of the additives on the formation of alumina-zirconia-mullite composite. Bulk density, phase combination, and microstructure of the sintered samples were examined by Archimedes method, X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. The results of the study revealed the successful formation of the alumina-mullite-zirconia composite by the reaction sintering method at temperature of 1600C. By the same token, the sample containing 6 wt.% of sintering aid shows improvement in density.  


Keywords    Alumina-Zirconia-Mullite, Composite, MgO, TiO2.


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