“…SEM micrographs of interfaces using various particle-introduced interlayers: (a, c) Cu/Sn58Bi/ Cu; (b, d) Cu/Sn58Bi-0.5CuZnAl/Cu. The bonding process was conducted at 250 ℃ for (a, b) 1 h and (c, d) 72 h34) Microstructure of TLPB for 1, 2, and 4 h using various interlayers: (a) Sn; (b) Sn-10Cu35) Journal of Welding and Joining, Vol. 38, No.…”