Patent ID: 7461772
Filing Date: 2008-12-09
Classification: C22C,Y10T

Abstract:
1. A method for brazing a first substrate to a second substrate comprising the steps of: positioning a brazing material between said first substrate including a tungsten/carbide cobalt material and said second substrate including titanium or alloys thereof, wherein said brazing material consists essentially of about 20 to about 60 percent by weight silver, about 1 to about 4 percent by weight aluminum, about 20 to about 65 percent by weight copper, about 3 to about 18 percent by weight titanium and about 1 to about 4 percent by weight nickel, wherein in the brazing material, the silver, aluminum, copper, titanium, and nickel are present in amount sufficient to provide the brazing material with a post-braze hardness of about 450 to about 550 KHN; and raising a temperature of said brazing material to about 1600° F. to about 1750° F. for at least about 1 minute.