Copper and aluminum can be joined by brazing when _________ alloy is used.
A. Copper-zinc
B. Aluminum-silicon
C. Copper-tellurium
D. Aluminum-zinc
The question was posed to me in an online quiz.
This key question is from Soldering and Brazing in portion Metallurgy of Welding, Brazing and Soldering of Engineering Material & Metallurgy
The correct option is B. Aluminum-silicon
To explain I would say: Most metals and alloys such as carbon steels, cast iron, stainless and alloy steels, brass, and others can be brazed. Aluminum and copper can also be joined if an aluminum-silicon alloy is used as the brazing filler metal.