Brazing alloy of copper, silicon, titanium, aluminum

Abstract

A brazing alloy for brazing ceramics has the following composition, in weight percent: 1 to 4 silicon; 1 to 5 titanium; 0.5 to 6 aluminum; 89 to 96 copper.

I claim: 
     
       1. A brazing alloy for brazing ceramics having the following composition, in weight percent: 94 Cu, 2.75 Si, 1 Al, 2.25 Ti. 
     
     
       2. A brazing alloy for brazing ceramics having the following composition, in weight percent: 92.25 Cu, 3.25 Si, 2 Al, 2.5 Ti. 
     
     
       3. A brazing alloy for brazing ceramics having the following composition, in weight percent: 92 Cu, 2.75 Si, 3 Al, 2.25 Ti. 
     
     
       4. A brazing alloy for brazing ceramics having the following composition, in weight percent: 90.25 Cu, 2.25 Si, 5 Al, 2.5 Ti. .Iadd. 
     
     
       5.  A brazing alloy for brazing ceramics having a composition consisting essentially of, in weight percent: 90.25-94.0 Cu, 1.25-3.5 Si, 1.0-6.0 Al, 1.5-2.5 Ti. .Iaddend..Iadd. 
     
     
       6.  The brazing alloy of claim 5 in which the brazing alloy composition is, in weight percent: 92.5 Cu, 2.0 Al, 3.5 Si, 2.0 Ti. .Iaddend..Iadd.7. The brazing alloy of claim 5 in which the brazing alloy composition is, in weight percent: 93.5 Cu, 2.0 Al, 3.0 Si, 1.5 Ti. .Iaddend..Iadd.8. The brazing alloy of claim 5 in which the brazing alloy composition is, in weight percent: 93.0 Cu, 2.0 Al, 2.5 Si, 2.5 Ti. .Iaddend..Iadd.9. The brazing alloy of claim 5 in which the brazing alloy composition is, in weight percent: 93.75 Cu, 2.0 Al, 2.0 Si, 2.25 Ti. .Iaddend..Iadd.10. The brazing alloy of claim 5 in which the brazing alloy composition is, in weight percent: 91.25 Cu, 3.0 Al, 3.25 Si, 2.5 Ti. .Iaddend..Iadd.11. The brazing alloy of claim 5 in which the brazing alloy composition is, in 
     
     
        weight percent: 92.0 Cu, 3.0 Al, 3.0 Si, 2.0 Ti. .Iaddend..Iadd.12.  The brazing alloy of claim 5 in which the brazing alloy composition is, in weight percent: 91.25 Cu, 4.0 Al, 2.25 Si, 2.5 Ti. .Iaddend..Iadd.13. The brazing alloy of claim 5 in which the brazing alloy composition is, in 
     
     
        weight percent: 90.25 Cu, 6.0 Al, 1.25 Si, 2.5 Ti. .Iaddend..Iadd.14.  The brazing alloy of claim 5 in which the alloy comprises a foil. .Iaddend..Iadd.15. The brazing alloy of claim 5 in which the alloy 
     
     
        comprises a paste. .Iaddend..Iadd.16.  A brazed joint having a first material comprising a ceramic, a second material selected from the group consisting of metals and ceramics, and a brazing alloy disposed between the first material and the second material having a composition consisting essentially of, in weight percent: 90.25-94.0 Cu, 1.25-3.5 Si, 1.0-6.0 Al, 
     
     
        1.5-2.5 Ti. .Iaddend..Iadd.17.  The brazed joint of claim 16 in which the 
     
     
        brazing alloy comprises a foil. .Iaddend..Iadd.18.  A brazed joint having a first material comprising a ceramic, a second material selected from the group consisting of metals and ceramics, and a brazing material disposed between the first material and said second material, the brazing material comprising a powder admixture of 2.25% titanium hydride powder and 97.75% atomized powder having a composition consisting of, in weight percent: 94.12 Cu, 3.07 Al and 2.81 Si. .Iaddend.