ABSTRACT
The chemical species present in a liquid will determine whether it is of an acidic or basic character. Ceramics with a surface acid/base character similar to the liquid will tend to resist corrosion the best. In some cases, the secondary phases of a ceramic may be of a slightly different acid/base character than the major component and thus whether the major phase or the secondary bonding phase corrodes first will depend upon the acid/base character of the environment. In addition to corrosion, heterogeneous catalysis is also involved with the surface acidity of a ceramic material, Benesi and Winquist 1978.
