Enhanced Evaporation of Copper by NH3 Gas Blowing

Article ID

2000Bdb1004

Title

Enhanced Evaporation of Copper by NH₃ Gas Blowing

Author(s)

R. O. Suzuki and K. Ono

Publication/Publisher

Proc. of 10th International IUPAC Conf. on High Temperature Materials Chemistry (HTMC X), (10-14 April 2000, Juelich, Germany), Ed. by K.Hilpert, F.W.Froben and L.Singheiser, (Forschungszentrum Juelich, Germany), Vol.15, Part II, pp.491-494, (2000).

Abstract

Enormously high rate of evaporation from liquid pure copper was found when NH₃ gas was top-blown. Smoke of fine spherical particles of Cu was observed by laser light sheet method. Nitrogen in the melt was supersaturated during NH₃ gas blowing. The formation of an unstable and volatile copper compound such as CuN_x or CuH was suggested in addition to the cooling effect due to endothermal decomposition of NH₃.