high temperature corrosion

Ceramic Protective Coatings for Cordierite-Mullite Refractory Materials

The issue of cordierite-mullite refractories protection from the influence of aggressive factors is considered. The interaction between the components of protective coatings has been studied. It has been investigated that in the systems based on poly(methylphenylsiloxane) filled with magnesium oxide, alumina and quartz sand, the synthesis of cordierite (2MgO•2Al2O3•5SiO2), mullite (3Al2O3•2SiO2) or magnesium aluminate spinel (MgO•Al2O3) is possible.

Research of Corrosive Destruction Mechanism of Cordierite-Mullite Refractory Materials

Reasons and mechanism of cordierite-mullite refractory materials destruction in the ovens for glazing ceramic wares baking have been examined. The change of elemental and phase compositions of refractory surface layers under the influence of cyclic action of water vapour and volatile components of glazing coating has been established. The ways of increasing cordierite-mullite refractory materials longevity have been proposed.