Evaporation of volatile component from intermetallic granule with non-volatile component shell

New lithium gas sorbents

“…At the same time, the concept of a two-stage character of the evaporation process introduced here allows an efficient use of approximations (8) and (9).…”

“…Together with (8), the approximation (9) also acquires significance in a technological niche. As evaporation processes in alloys with a cover layer take place in the diffusion regime, formula (5) becomes unnecessary and can be substituted without any risk by the simplified expression (9). Substitution of (9) into (6) or (7) provides in this case a simpler mathematical basis for regulating the thickness of the deposit of A growing on a substrate.…”

“…In previous studies we considered the problem of evaporation of a volatile metal from an intermetallic compound with a fusible cover layer [8,9]. It has been shown that such a cover layer not only fulfills protective functions, but also stabilizes the evaporation flow in compliance with experimental data [7].…”

“…Two stages of evaporation for H 1: I, the field of the initial evaporation stage; II, the field of the diffusion stage; the solid line corresponds to formula(5), dots correspond to formula (8), crosses to formula(9).…”