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Preparation of SiAlON and mullite-zirconia ceramics from aluminum dross

H.M.Hdz-Garcia, Arturo I.Martinez, A.R.Mu�?±oz, J.C.Escobedo, A.Flores-Valdes

Samples ofAl dross collected fromthree different aluminumfoundrieswere processed and characterized. A mixture of the three processed dross containsmainlyAl 2O3,Al, SiO2,MgAl2O4 andAlN. This drossmixturewas used as raw material to obtain high-grade ceramics composites such as SiAlON and mullite-zirconia. X-ray diffraction and electronmicroscopy analysis of the products obtained showed that SiAlON and mullite-zirconia composites were formed.