Intensification of mass-exchange processes by an electric field in a capillary porous solid-liquid system

Gravity effects on reactive settling in the Al–W system in SHS

“…It was shown that the field influenced the wave velocity and temperature of SHS reactions [14e16] and the reaction mechanism, and thus the nature of the product phases [17,18]. The electric field has been also shown to modify surface tension of liquids [19] and enhance mass transport in porous media [20]. Furthermore, Marangoni flows, whose occurrence in SHS reactions has been reported [21], could also be induced due to non-uniform current distribution dictated by phase distribution and temperature gradients.…”

Dissolution and precipitation under gravitational conditions in the W–Al system

“…Since the temperatures of the NbeSi chemical oven are the same for all applied currents, the difference is likely related to the influence of the electric current on the mechanism of the dissolution process. Mass transport enhancement by the application of a current has been observed between solids [24], between a solid and a liquid [21,25], and within the liquid due to electromigration effects [26]. However, other possible contribution may be the consequence of increased dissolution rates due convective flows due to the current [27].…”