Abstract
Influence of structural relaxation on wetting behavior of molten In–Sn alloy on Cu 40Zr 44Al 8Ag 8 bulk metallic glass (BMG) was studied using the sessile-drop method at isothermal condition in high vacuum. It was found that the equilibrium contact angle increased with the increase of the pre-annealing temperature of Cu 40Zr 44Al 8Ag 8 BMG substrate. Moreover, the high-temperature structural relaxation greatly affected wetting behavior of molten In–Sn alloy on Cu 40Zr 44Al 8Ag 8 BMG substrate. By analyses of interfacial microstructure, the interface between In–Sn alloy and pre-annealed Cu 40Zr 44Al 8Ag 8 BMG was continuous, while no interfacial reaction layer formed in the temperature range studied.
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