Brazing filler metal

Abstract

A brazing filler metal is composed of palladium, metal having homogeneous solubility with the palladium, and phosphorus as main constituents thereof, with addition of platinum and nickel as the metal having homogeneous solubility with the Pd, wherein a composition ratio of phosphorus falls within a range of about 3 to about 17 wt. %, a composition ratio of platinum falls within a range of about 5 to about 85 wt. %, and a composition ratio of nickel falls within a range of about 5 to about 32 wt. %.

What is claimed is:  
     
         1 . A brazing filler metal having a composition comprising palladium, metal having homogeneous solubility with the palladium, and phosphorus as main constituents thereof, wherein a composition ratio of the phosphorus falls within a range of 2 wt. % to less than 20 wt. %.  
     
     
         2 . A brazing filler metal having a composition comprising palladium, platinum, nickel, and phosphorus as main constituents thereof, wherein a composition ratio of the phosphorus falls within a range of 2 wt. % to less than 20 wt. %.  
     
     
         3 . A brazing filler metal according to  claim 2 , wherein a composition ratio of the platinum falls within a range of 4 to less than 86 wt. %.  
     
     
         4 . A brazing filler metal according to  claim 2 , wherein a composition ratio of the nickel falls within a range of 4 to less than 36 wt. %.  
     
     
         5 . A brazing filler metal according to  claim 3 , wherein a composition ratio of the nickel falls within a range of 4 to less than 36 wt. %.  
     
     
         6 . A brazing filler metal according to  claim 5 , wherein a composition ratio of the phosphorus falls within a range of about 3 to about 17 wt. %.  
     
     
         7 . A brazing filler metal according to  claim 5 , wherein a composition ratio of the platinum falls within a range of about 5 to about 85 wt. %.  
     
     
         8 . A brazing filler metal according to  claim 5 , wherein a composition ratio of the nickel falls within a range of about 5 to about 32 wt. %.  
     
     
         9 . A brazing filler metal having a composition comprising palladium, copper, nickel, and phosphorus, as main constituents thereof, wherein a composition ratio of the phosphorus falls within a range of about 4 to about 18wt. %.  
     
     
         10 . A brazing filler metal according to  claim 9 , wherein a composition ratio of the copper falls within a range of about 2 to about 64 wt. %.  
     
     
         11 . A brazing filler metal according to  claim 9 , wherein a composition ratio of the nickel falls within a range of about 7 to about 36 wt. %.  
     
     
         12 . A brazing filler metal according to  claim 10 , wherein a composition ratio of the nickel falls within a range of about 7 to about 36 wt. %.  
     
     
         13 . A brazing filler metal having a composition comprising palladium, gold, nickel, and phosphorus, as main constituents thereof, wherein a composition ratio of the phosphorus falls within a range of 2 to less than 20 wt. %.  
     
     
         14 . A brazing filler metal according to  claim 13 , wherein a composition ratio of the gold falls within a range of 2 to less than 60 wt. %.  
     
     
         15 . A brazing filler metal according to  claim 13 , wherein a composition ratio of the nickel falls within a range of 4 to less than 32 wt. %.  
     
     
         16 . A brazing filler metal according to  claim 14 , wherein a composition ratio of the nickel falls within a range of 4 to less than 32 wt. %.  
     
     
         17 . A brazing filler metal according to  claim 16 , wherein a composition ratio of the phosphorus falls within a range of about 3 to about 19 wt. %.  
     
     
         18 . A brazing filler metal according to  claim 16 , wherein a composition ratio of the gold falls within a range of about 3 to about 59 wt. %.  
     
     
         19 . A brazing filler metal according to  claim 16 , wherein a composition ratio of the nickel falls within a range of about 5 to about 31 wt. %  
     
     
         20 . A brazing filler metal having a composition comprising platinum, metal having homogeneous solubility with the platinum, and phosphorus, as main constituents thereof, wherein a composition ratio of the phosphorus falls within a range of about 4 to about 21 wt. %.  
     
     
         21 . A brazing filler metal having a composition comprising platinum, copper, nickel, and phosphorus, as main constituents thereof, wherein a composition ratio of the phosphorus falls within a range of about 4 to about 19 wt. %.  
     
     
         22 . A brazing filler metal according to  claim 21 , wherein a composition ratio of the copper falls within a range of about 2 to about 66 wt. %.  
     
     
         23 . A brazing filler metal according to  claim 21 , wherein a composition ratio of the nickel falls within a range of about 7 to about 36 wt. %.  
     
     
         24 . A brazing filler metal according to  claim 22 , wherein a composition ratio of the nickel falls within a range of about 7 to about 36 wt. %.  
     
     
         25 . A brazing filler metal having a composition comprising platinum, gold, nickel, and phosphorus, as main constituents thereof, wherein a composition ratio of the phosphorus falls within a range of about 4 to about 21 wt. %.  
     
     
         26 . A brazing filler metal according to  claim 25 , wherein a composition ratio of the gold falls within a range of about 5 to about 62 wt. %.  
     
     
         27 . A brazing filler metal according to  claim 25 , wherein a composition ratio of the nickel falls within a range of about 5 to about 22 wt. %.  
     
     
         28 . A brazing filler metal according to  claim 26 , wherein a composition ratio of the nickel falls within a range of about 5 to about 22 wt. %.