Preparation and Properties of a Custom-designed Nickel-based Amorphous Brazing Foil

摘要

The custom-designed amorphous brazing filler metals in foil form has been developed for application in brazing stainless steel 0Crl 8Ni9.The new alloys contains 10.5wt％ chromium,5.4wt％ silicon,1.5wt％ boron,3wt％ cobalt and nickel as the balance.The melting range is within 971°C～1070°C.The alloy exhibits good melting characteristics and wetting behavior.With a 25μm thick foil,the joint is free of brittle central eutectic phases inside the joint via diffusion of the alloying elements into adjoining base metal and results on a high mechanical joint strength.