EVAPORATOR FOR METALS AND ALLOYS Russian patent published in 1997 - IPC

FIELD: superfine metal powders. SUBSTANCE: invention relates to apparatuses designed to product, via gas-phase method, superfine powders of metals and alloys of difficultly volatile and volatile elements and also for applying metal coatings in microelectronics, metallurgy, and electrochemistry. Evaporator has closed cylindrical container 1 with vapor outlet port 5 with diameter d_b= (A•d_kl)^0,25-0,4d_k; separated from it, heater 3 with diameter d_h= d_o-(0,5d_k-a) fixed by means of nonconductors 4 at distance a from port 5; a = (B•d_k•l)^0,25-(C•d_k•l)^0,25; where d_k is diameter of container 1; l is length of container 1; A, B, and C are empirical coefficients equal to 0.66, 2•10^-3, and 10•10^-3 sq.mm, respectively. EFFECT: improved quality of condensed product due to prevented condensation of vapor on walls of holes. 1 dwg , 1 tbl