3. Results
3.1. Microhardness measurements
The observed evolution of the microhardness of the anodic
oxide layers as a function of the electrolyte temperature is
depicted in Fig. 2. With increasing electrolyte temperature a
decreasing microhardness, evaluated at the surface of the oxide,
was recorded. The results display a linear decrease in the
temperature range [15 °C to 45 °C], with the microhardness