Control of compound forming reaction at the interface between SnZn solder and Cu substrate

Autor: Hisao Irie, Tetsu Ichitsubo, Takaaki Anada, Seishi Kumamoto, Kozo Fujiwara, Masahiko Yamaguchi, Eiichiro Matsubara
Rok vydání: 2005
Předmět:
Zdroj: Journal of Alloys and Compounds. 392:200-205
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2004.09.043
Popis: Effects of additives, Cu and Ni, on intermetallic compound formation at the interface between Sn–Zn-based solder and Cu substrate have been studied. (Sn91Zn9)99.98−xMxAl0.02 (wt.%) solder (M = Cu or Ni) alloys were prepared. The microstructures of the samples after annealing at 120 °C for 100 h were investigated using a scanning electron microscope, and the melting temperatures of the alloys were measured with a differential scanning calorimeter for different Cu or Ni contents. Although the melting (liquidus) temperature increases up to about 210–220 °C by alloying Cu or Ni of 2.6–2.7 wt.% to the solder, the well-known formation of intermetallic compounds, Cu5Zn8 and Sn6Cu5, are found to be significantly restrained.
Databáze: OpenAIRE