Al/Sn-Bi core-shelled particles were prepared by phase separation of Al_(75)Bi_9Sn_(16) and(Al_(75)Bi_9Sn_(16))_95Cu_5 alloy.The morphology,microstructure,composition and phase transformation of the core-shelled particles were investigated by scanning electronic microscopy,energy dispersive spectrometer and differential scanning calorimetry.It reveals that the particle comprises a shell of Sn-Bi alloy and a core of Al alloy with better electrical and thermal properties.Cu mainly exists in the Al-rich core w...