Ceramics:

Since tritium's solubility, ability to diffuse and permeability are greatly lower for ceramics than for glasses and ceramics undergo little or no bulk disruption from tritium. Therefore, few mechanical degradation of regions near the surface is probable. The depth of the area affected is a function of ability to diffuse and time. Oxygen release from Al₂O₃ (sapphire) windows in the presence of liquid T₂O has presently been noted, while compatibility along with tritium gas has been defined as excellent. The exchange of surface and near-surface protium is likely, while mutual contamination of tritium and the ceramic should be less than in which for glasses. Tritium-contaminated ceramics could possibly be decontaminated through warm water or steam flushes or through etching within an acidic solution.