Abstract

Vertical sections of ternary oxide phase diagrams are relatively easy to construct by one who has training in oxide phase equilibria. In those instances where high-temperature reactions are relatively fast, as in the case of alkali oxides reacting with common refractories, the vertical section of the ternary diagram containing the corrodant and the refractory composition of interest is an extremely valuable guide in determining the high-temperature reactions that will occur. This information, together with a moderate knowledge of oxide liquids (glass) and selected properties of the crystalline reaction products, enables the researcher to evaluate rather accurately the corrosive effect of the oxide of interest on the refractory. Most importantly, this information reduces the need for extensive experimentation to evaluate the high-temperature corrosion of many ceramic materials.

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