Ag-Cu-Sn合金の低温ろう付け特性と機械的性質

概要

論文の詳細を見る
This study focuses on Ag-Cu-Sn ternary alloys used as brazing filler metals. These alloys are known to have a high wettability and a low melting temperature. However, the alloys become brittle by the addition of large amounts of Sn. In this study, we investigated the brazing characteristics and the mechanical properties of Ag-Cu-Sn ternary alloys that contain Sn in the range of 15 to 30 wt.% Sn, which have not been reported until now. 47.5 wt.% Ag-25.5 wt.% Cu-27.0 wt.% Sn alloy was compatible ratio with low melting temperature and high wettability. However the alloy was very brittle because of the existence of Cu3Sn. This material is known as hard and brittle intermetallic compounds. We added Ni to the alloy to improve the brittleness. 1 wt.% Ni addition improved its rupture strain significantly. It is suggested that the good mechanical properties are derived from production of (Cu, Ni)3Sn intermetallic compounds and grain coarsening.
社団法人粉体粉末冶金協会の論文
2009-11-15