Breviary Technical Ceramics



 Surface corrosion and selective corrosion

The removal of material from the surface by aggressive media implies that the material has an isotropic structure (as glasses do). The speed of the corrosion process depends here on the solubility product . Ceramic materials, however, generally have a heterogeneous microstructure, that prevents uniform chemical attack over the surface.
This does not apply to ceramics containing a high proportion of glass phase material. For this reason, corrosion-resistant porcelains, such as laboratory porcelain, include an acid-resistant glass phase. Application in alkaline media, however, is critical for these materials.

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