Patents Examined by L. Dewayne Rutledge, III
  • Patent number: 4149881
    Abstract: A brazing alloy composition consisting essentially of from about 17 to about 44 percent by weight of palladium, from about 4 to 11 percent by weight of chromium, from about 1 to about 4 percent by weight of silicon from about 1.5 to about 4 percent by weight of boron and the balance nickel is suitable for brazing in the temperature range of from about 1750.degree. F. to about 1850.degree. F. with a recommended brazing temperature of about 1800.degree. F. The brazing temperature of the brazing alloy of this invention is lower than the brazing temperatures of conventional Ni-base phosphorus-free brazing alloys and has good stress-rupture characteristics and oxidation resistance up to 1400.degree. F.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: April 17, 1979
    Assignee: Western Gold and Platinum Company
    Inventor: Thomas L. D'Silva