The Evaporation of Molten Metals from Hot Filaments

Abstract

The selection of filament material from which another metal can be evaporated successfully depends largely upon the three properties of wetting (W), reaction or alloying (R), and evaporation (E). Nine filament materials and twenty‐seven evaporated metals have been investigated and the results summarized in a table using the above symbols with subscripts 1, 2 and 3 to indicate the degree of favorable properties. A second table lists satisfactory filament materials for the evaporation of twenty‐six metals.