Titanium alloy having improved corrosion resistance and strength

Abstract

A titanium alloy containing carbon with and without addition of silicon exhibiting improved corrosion resistance and mechanical strength as compared to commercially pure ASTM grade 2 titanium or PGM-alloyed ASTM grade 7 titanium.

1 . A titanium alloy exhibiting improved corrosion resistance as compared to commercially pure ASTM grade 2 titanium, said alloy utilizing carbon as the primary alloying element to effect said improved corrosion resistance.  
   
   
       2 . The titanium alloy of  claim 1  wherein the alloy comprises a carbon content of 0.2-4 weight percent.  
   
   
       3 . The titanium alloy of  claim 1  wherein the alloy comprises a carbon content of 0.5 to 2 weight percent.  
   
   
       4 . The titanium alloy of  claim 1  wherein the said alloy comprises commercially pure ASTM grade 2 titanium, alloyed with said carbon.  
   
   
       5 . A titanium alloy exhibiting increased strength as compared to commercially pure ASTM grade 2 titanium, said alloy comprising carbon as a primary alloying agent effecting said improved strength.  
   
   
       6 . The titanium alloy of  claim 5  wherein the alloy comprises carbon of 0.2 to 4 weight percent.  
   
   
       7 . The titanium alloy of  claim 5  wherein the alloy comprises carbon of 0.2 to 2 weight percent.  
   
   
       8 . The titanium alloy of  claim 5  wherein the said alloy comprises commercially pure ASTM grade 2 titanium, alloyed with said carbon.  
   
   
       9 . The titanium alloy of  claim 5  including silicon.  
   
   
       10 . The titanium alloy of  claim 5  including silicon of 0.1 to 0.5 weight percent.