Wetting and penetration of cordierite and mullite materials by non-stoichiometric cordierite liquids

The wetting and penetration of two non-stoichiometric cordierite liquids (labelled G1=25wt.% Al2O3, 63wt.% SiO2 and 12wt.% MgO, and G2=20wt.% Al2O3, 64wt.% SiO2 and 16wt.% MgO) on sintered cordierite and mullite substrates were investigated. Their chemical compositions (G1 and G2) correspond to those glasses present in materials sintered from a commercial powder of non-stoichiometric cordierite powder at 1450 or 1400°C, respectively.