1990 Volume 8 Issue 4 Pages 463-470
Copper to copper lap joint was made by the resistance heating apparatus by which heating and pressure was applied simultaneously. The copper plate was pre-soldered and the alloyed layer was pre-formed by using Pb-50Sn solder.
Tensile test of the joints was carried out at room temperature after heat test at 150°C or 250°C for 1000h, heat cycle test from -55°C to +150°C by 1000 cycles or salt spray test at 35°C for 1000h.
All of these joints were fractureed at the base metal, copper.
The strengths of the joints were as those of the joints which were brazed by using BAg-6.
Although the joints made by press-soldering were heated at 150°C or 250°C the thickness of the alloyed layer was constant.
