Effect of magnesia additions on the reaction sintering of zircon/alumina mixtures to produce zirconia toughened mullite

Development and evolution of a novel (Zr1-xSnx)O2 toughened alumina-mullite slip cast refractory: Effect of SnO2

“…Reaction sintering of stoichiometric 3:2 mullite occurs according to the following reaction; 3Al2O3(s) + 2ZrSiO4(s) + (CaO/TiO2/MgO)/heat = Al6Si2O13 + 2ZrO2 ………………. (1) where, CaO [14]; TiO2 [15][16][17][18]; MgO [19,20]; La2O3 [21]; Dy2O3 [22]; are some of the additives employed in the starting formulation mix, as sintering agents, that have been reported in the literature to enhance densification and/or mullitisation through liquid phase sintering from the dissociated zircon and lowering of the mullitisation temperature [14][15][16][17][18][19][20][21][22]. Among these reported additives, TiO2 additions up to 4wt.…”

Diagramas de equilibrio cuaternarios ZrO₂-Al2O ₃-SiO ₂- (CaO, MgO, TiO₂). Una poderosa herramienta para el desarrollo de nuevos materiales por sinterización reactiva

“…Especial mención merece la serie de trabajos que el inspiro y dirigió sobre la aplicación de los diagramas de equilibrio cuaternarios ZrO 2 -Al 2 O 3 -SiO 2 -(CaO, MgO, TiO 2 ) al diseño, procesamiento y caracterización de materiales de mullita (3Al 2 O 3 ·2SiO 2 )-circona (ZrO 2 ) [19][20][21][22][23]. Estos trabajos, que se publicaron en el J. Mat.…”

Microstructure and Properties of Zirconia-Mullite Nanocomposites Obtained from Si-Al-Zr-O Amorphous Bulks Doped with CaO and MgO

“…Zhang, et al [15] have reported that TiO 2 has an effect on the phase formation and the anisotropic grain growth for mullite. A small amount of MgO additive can enhance zircon decomposition rate [16] and promote elongated mullite grain growth [17]. However, the responses for trace element doping are quite diverse when the composites are produced by different methods, and especially obtained from the different precursors.…”