New lithium gas sorbents

New lithium gas sorbent

“…In essence, the graphs in Fig. 2 show the function j(T, t), of which it is known that ∂j(T, t)/∂T > 0, and ∂j(T, t)/∂t < 0 [24]. Hence, the appearance of the minimum in curvesj(T, t) is inherent in the very nature of this function.…”

“…The growth of the evaporation rate is conditioned, in particular, by the fact that for the discussed materials, the energy of the diffusion activation is higher than the energy of evaporation. So, although the thickness of the cover layer depleted in lithium increases with time, the surface lithium concentration also grows due to the temperature rise and this becomes a cause for the growth of j [24].…”

“…Thus, the unusual appearance of the experimental curvesj − T is sensibly explained from the position of the theory [24] which predicts the formation of a thin film of non-volatile metal on the surface of a solid solution when its volatile component evaporates. These ideas are applied below in the derivation of a simplified method of calculation of evaporation flow in metal systems with intensive evaporation of one of the components.…”

“…The general solution for a problem of this kind is given in [24], but now our target is to obtain a working formula for calculating a flow j(T, t) taking into account the real behavior of the material, i.e. taking into account the data contained in Table 1 and Fig.…”

“…The aim of the present paper is to provide concrete knowledge for the case of wire vapor sources taking into consideration the results of formal theoretical analysis of the processes taking place in the alloy itself [24]. The conclusions obtained for linear vapor sources can easily be generalized for the case of point or planar sources.…”