Using the sessile-drop method, the wettability and diffusion of the molten Bi–Sn on amorphous and crystalline Fe78B13Si9 alloy were studied at isothermal condition, and the interfacial characteristics were investigated by HRSEM and EPMA. The results show that the contact angle of Bi–Sn alloy melts on amorphous substrate was smaller than that of Bi–Sn alloy melts on the crystalline one at 423K. The interface was continuous, while no intermediate reaction layer formed at the interface of molten Bi–Sn on amorphous and crystalline Fe78B13Si9, respectively. The width of diffusion layer of Bi–Sn alloy melts on the amorphous substrate was thinner than that on the crystalline one under identical conditions.

Contact Angles and Diffusion of Molten Bi–Sn Alloy on Amorphous and Crystalline Fe78B13Si9. G.F.Ma, H.F.Zhang, H.Li, Z.Q.Hu: Materials Letters, 2009, 63[18-19], 1605-7