• US 20100059573A1
  • Filed: 09/08/2008
  • Published: 03/11/2010
  • Est. Priority Date: 09/08/2008
  • Status: Active Grant
First Claim
Patent Images

1. A process of filling an opening in a component formed of nickel- or cobalt-base alloy, the process comprising:

  • forming a powder mixture by mixing particles of at least a base alloy and a second alloy, the base alloy constituting about 30 to about 90 weight percent of the powder mixture, the second alloy containing a sufficient amount of a melting point depressant to have a lower melting temperature than the base alloy;

    combining the powder mixture with a binder and then compacting the combined powder mixture and binder to form a compacted preform;

    heating the compacted preform to remove the binder and form a sintered preform;

    placing the sintered preform in the opening, wherein the preform has a cross-sectional shape and dimensions to achieve a clearance of not greater than 200 micrometers with the opening; and

    thendiffusion braze bonding the sintered preform within the opening to form a brazement within the opening comprising the particles of the base alloy dispersed in a matrix formed by the second alloy.

View all claims

    Thank you for your feedback