Degradation characteristics of Ti/(IrO_2 + Ta_2O_5) coating anodes in H_2SO_4 solution

摘要

The service life of Ti based IrO_2 + Ta_2O_5 coating anodes over the whole composition range and prepared at different temperatures was studied by the accelerated electrolysis tests. The results show that as a result of in completed decomposition, coatings obtained at low temperature are not stable. At the preparing temperature up to 450 deg. C, the stabili- ty of the resulting deposits increase dramatically, and is independent on temperature.