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Hydrogen absorption kinetics of V–Al alloy

Author:
Kumar, Sanjay   Taxak, Manju   Krishnamurthy, Nagaiyar  


Journal:
Journal of Thermal Analysis and Calorimetry


Issue Date:
2013


Abstract(summary):

The vanadium-aluminum alloy has been prepared by aluminothermy process. The alloy ingot obtained was refined by electron beam melting and homogenized by vacuum arc melting technique. The refined alloy was crushed into small pieces. These pieces were kept isothermally in a thermobalance attached to the Sieverts apparatus for the hydrogen charging. Reacted fraction alpha was calculated using isothermal thermo-gravimetry method. The reacted fraction alpha-t data thus obtained have been linearly fitted over a suitable reaction mechanism function. Rate constants at different temperatures are determined using slope of these linearly fitted curves. Activation energy of hydrogen charging has been calculated using Arrhenius equation.


Page:
5-10


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