“…The as-extruded SAC307 samples presented slightly lower average contact angles than those found for the directionally solidified alloy sample, achieving relatively close q a values between each other. According to the literature [32] the uniform chemical composition of the rapidly-solidified Sn-0.7 wt%Cu alloy may improve its wettability if compared with as-cast alloy (slow cooling conditions). Furthermore, the freezing range of the rapidlysolidified Sn-0.7 wt%Cu alloy tends to be narrow, which would help to uniform melt.…”