Electron beam brazing of copper and aluminium

Abstract

This paper introduces a process used to produce stable and reliable Cu-Al joints with a high degree of freedom regarding component geometries. The process uses the accurate controllable energy input of the beam processes (electron- or laser beam) and the difference of the fusion temperature of the two materials. The paper shows the problems and the state of the art of joining copper and aluminium; exemplify the new solution approach and presenting the results of the metallographic and technologic tests of the produced joint.