Cadmium-free brazing alloys comprising 45-75 weight Ag, 10-30 weight Cu, 1-25 weight Zn, and other elements

摘要

The cadmium-free brazing alloy includes 45-75 weight percent Ag, 10-30 weight percent Cu, up to 20 weight percent Ga, 1-25 weight percent Zn, up to 6 weight percent Sn or In or up to 6 weight percent Sn and In, 0.1-8 weight percent Mn or 0.1-3 weight percent Si or Ge or Si and Ge and optionally up to a total of 5 weight percent of other alloying elements provided that when Ga is 12 weight percent or less, either Mn and/or Si is present. Also described is the use of the cadmium-free brazing alloys for soldering hard metals (for example for soldering diamond-filled or diamond-coated hard metal segments in the production of drilling heads).