Gold-nickel-titanium brazing alloy

Abstract

A brazing alloy in accordance with this invention has the following composition, by weight: 91 to 99 gold, 0.5 to 7% nickel; 0.10 to 2% titanium. Alternatively, with palladium present, the composition is as follows, by weight: 83 to 96% gold; 3 to 10% palladium; 0.5 to 5% nickel; 0.10 to 2% titanium.

I claim: 
     
       1. A brazing alloy for brazing ceramics having the following composition, in weight percent: 91 to 99% gold; 0.5 to 7% nickel; 0.10 to 2% titanium. 
     
     
       2. The brazing alloy of claim 1 having the following composition: 96% gold; 3% nickel; 1% titanium. 
     
     
       3. The brazing alloy of claim 1 having the following composition: 96.4% gold; 3.0% nickel; 0.6% titanium. 
     
     
       4. The brazing alloy of claim 1 having the following composition: 97.5 gold; 2.0% nickel; 0.5% titanium. 
     
     
       5. The brazing alloy of claim 1 having the following composition: 94.0% gold; 5.0% nickel; 1.0% titanium. 
     
     
       6. A brazing alloy for brazing ceramics having the following composition, in weight percent: 83 to 96% gold; 3 to 10% palladium; 0.5 to 5% nickel; 0.10 to 2% titanium. 
     
     
       7. The brazing alloy of claim 6 having the following composition: 91.5% gold; 5.0% palladium; 2% nickel; 1.5% titanium. 
     
     
       8. The brazing alloy of claim 6 having the following composition: 92.5% gold; 5.0% palladium; 2% nickel; 0.5% titanium. 
     
     
       9. The brazing alloy of claim 6 having the following composition: 92.0% gold; 5.0% palladium; 2% nickel; 1.0% titanium. 
     
     
       10. The brazing alloy of claim 6 having the following composition: 91.5% gold; 5.0% palladium; 3% nickel; 0.5% titanium. .Iadd. 
     
     
       11.  A braze joint comprising a first material, a second material, and a ductile brazing material disposed between said first and second materials having a composition consisting essentially of, in weight percent, 91-99 Au, 0.5-7 Ni, 0.10-2 Ti. .Iaddend. .Iadd. 
     
     
       12.  A braze joint comprising a first material, a second material, and a ductile brazing material disposed between said first and second materials having a composition consisting essentially of, in weight percent, 83-96 Au, 3-10 Pd, 0.5-5 Ni, 0.10-2 Ti. .Iaddend.