Investigation of alkali corrosion resistance of potassium aluminosilicates using statistical techniques

Alkali aluminosilicates are potential materials for high temperature applications under alkali load. This study investigated the alkali corrosion behaviour of alkali aluminosilicates originating from the system K2O-Al2O3-SiO2 using mixture designs. The aim was to identify compositional regions showing alkali corrosion resistance and to establish a model for predicting the corrosion behaviour of alkali aluminosilicates under alkali corrosive conditions. Such a model is useful to predict the corrosion behaviour for example due to compositional variations in the raw materials and is important for a potential industrial production process. The mathematical results were optimized by augmenting the number of points in the lattice and dividing the experimental region into two areas. Finally, an established model can be used to predict the corrosion behaviour in a sub region of the ternary system K2O-Al2O3-SiO2.