抄録
The conditions of corrosion of various irons by molten zinc have been investigated in connection with galvanizing process to clarify the dissolving behavior of iron in molten zinc. Life of galvanizing bath is influenced by following two factors; amount fo the separated compounds in molten zinc and states of compound layers formed on iron surface. Formation velocities may be generally classified in two modes; one showing the growth fo compound layers in the form of parabolical curve to the time axis and the other showing the linear growth of compound layers. The formation velocities of the compact compound layers of the porabolical-growth-type are less than those of the porous layers of the linear-growth-type. Irons containing 2%Al-3%Si, 3%C-2%Si-3%Cr etc. show the growth of the former type, while the growth of the layers formed on carbon steel, white iron, gray iron, malleable iron etc. is of the latter type.
