Kinetics and Mechanism of Interaction of Aluminum and Magnesium of Al-Mg-Bi Ternary System with Water

摘要

The kinetics and mechanism of interaction of aluminum and magnesium of an Al-Mg-Bi ter nary system with water were obtained using the method of high-temperature volumetry at high pressures and temperatures of 225-325°C. The kinetic parameters of the reaction, i.e., the rate constant, activation energy, and degree of conversion, were calculated and the mechanism of corrosion dissolution of activated by bismuth aluminum and magnesium in water with the release of hydrogen at high rates was suggested. The kinetic parameters during the interaction of aluminum activated by bismuth and magnesium in boehmite (AlOOH), and magnesium hydroxide (Mg(OH)_2) with water with the release of hydrogen at a rate of 3196-4033 l/(m~2 min) in the investigated temperature range were determined. The nanostructured particles of Al-Mg-Bi alloys were detected using a JSM6490 LV electron microscope (Japan).