Abstract
First, the dissolution of water into different types of oxides is discussed, including the influence of the water pressure and the oxygen activity. Then the transport of water, i.e. of hydrogen–containing species, in such oxides and its dependence on the water pressure and the oxygen activity is analyzed. Hydrogen–containing species of relevance in this context are water molecules, protons and OH groups. Crystalline and amorphous oxides are considered. Following these more general discussions, some specific experimental observations on the solution and the transport of water and hydrogen–related species in oxides are reviewed and discussed. These observations were made by members of different scientific communities, i.e. by earth scientists, glass scientists, solid state electrochemists, etc. Finally, a few possible consequences of the observations made and of conclusions drawn from them for the high temperature oxidation of alloys in water–containing atmospheres are discussed.
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