Effect of environmental changes on the corrosion behaviour of Al2O3/MA 956system

In this study the response to corrosion by MA 956 with an alumina layer gen erated at 1100 degrees C for 100 h considering different modifications of t he corrosive medium was evaluated. Possible defects which might exist or be produced in the alumina layer have been also considered. The corrosion res istance was investigated by means of electrochemical impedance spectroscopy (EIS) and anodic polarisation curves. The corrosive medium was Hank's solu tion with variations in pH and different oxydation level. The alumina/ MA 9 56 system is able to resist changing environment conditions such as variati ons in pH, and different oxygenation levels without altering its resistance to corrosion. This aids in simulation of hematomas, inflammations, or in v ivo infections.