Hydrogen Evolution During Cathodic Polarisation of Al-Ga Alloy
The results presented in this paper were obtained with three Al-Ga binary alloys that had been prepared on super pure (99.999 %) Al base. The yield of hydrogen formed during cathodic polarisation of Al-Ga alloys in a neutral salt solution was measured volumetrically as a function of current density, temperature (between 20 and 80°C) and gallium content in the alloy (0.1, 0.26 and 2.6 wt. % Ga respectively). The yield of hydrogen was established to be about 2 or even less at all current densities and at low temperatures, while with increasing temperature it approached the value of 4. The yield of hydrogen decreases with the increase of gallium content in the alloy especially at lower temperatures.