Abstract
Since it has been pointed out that non-wetting behavior of liquid Zn alloy sometimes occurs on high-tensile strength steels which usually contain Si and Mn, there have been a lot of studies to improve the wettability of liquid Zn. In the present work, we applied a sessile drop method to measure the change in contact angle and diameter of liquid Zn droplet wetted on steels containing Si and Mn with time, in order to evaluate quantitatively the wettability by liquid Zn with those steels. Addition of Si has dropped the contact angle, work of adhesion and spreading velocity. On the other hand, Mn has no relationship with contact angle and work of adhesion but increased the spreding velocity when steels contain Si.
