Abstract
Surface tensions of molten alloys are of importance for effective designs of the materials manufacturing processes such as welding and die casting, and are strongly decreased by surface active species. Although the oxygen effect is especially paid attention for the actual process, the mechanism for its adsoption on alloy surfaces has not been clarified sufficiently. In the present work, the adsoption of oxygen on metal and alloy surfaces as oxides are described successfully by Belton’s equation on the basis of the assumption that the “associated compounds” form at metal atoms on the surface.
