Water degradation of thallium-2212 ceramics

Water degradation of Tl2Ba2CaCu2O8 – x, Tl2Ba2CaCu2O8 – x + 0.2ZrO2, and Tl1.8Pb0.2Ba2CaCu2O x high-Tc ceramics is studied. The results demonstrate that the introduction of PbO and ZrO2 improves the resistance of the Tl-based high-Tc ceramic to corrosion in water and humid air. The degradation products are identified by x-ray diffraction.