Composition for reactive material

Abstract

A composition includes an alloy that has, by weight, 25-65% zirconium, 25-65% tungsten, and 6-25% of a combined amount of nickel in at least one of iron and cobalt. The alloy may be formed into a geometric body that has a density of 7.8 grams per cubic centimeter to 11.4 grams per cubic centimeter.

What is claimed is: 
     
         1 . A composition of matter comprising:
 an alloy including, by weight:
 25-65% zirconium; 
 25-65% tungsten; and 
 6-25% of a combined amount of nickel and at least one of iron and cobalt. 
   
     
     
         2 . The composition as recited in  claim 1 , wherein the alloy includes 5-20% nickel. 
     
     
         3 . The composition as recited in  claim 1 , wherein the alloy includes 1-5% of at least one of iron and cobalt. 
     
     
         4 . The composition as recited in  claim 1 , wherein the alloy includes iron and excludes cobalt. 
     
     
         5 . The composition as recited in  claim 1 , wherein the alloy includes cobalt and excludes iron. 
     
     
         6 . The composition as recited in  claim 1 , wherein the zirconium, tungsten, nickel, and at least one of iron and cobalt are distributed throughout the alloy. 
     
     
         7 . The composition as recited in  claim 1 , wherein the alloy consists of:
 25-65% zirconium;   25-65% tungsten; and   6-25% of a combined amount of nickel and at least one of iron and cobalt.   
     
     
         8 . The composition as recited in  claim 1 , wherein the alloy consists essentially of:
 25-65% zirconium;   25-65% tungsten; and   6-25% of a combined amount of nickel and at least one of iron and cobalt.   
     
     
         9 . An article comprising:
 a geometric body formed of an alloy having a density of 7.8 grams per cubic centimeter to 11.4 grams per cubic centimeter, the density being selected with respect to a kinetic energy parameter of the geometric body, the alloy including zirconium, tungsten, nickel, and at least one of iron and cobalt.   
     
     
         10 . The article as recited in  claim 9 , wherein the alloy, by weight, includes:
 25-65% zirconium;   25-65% tungsten; and   6-25% of a combined amount of nickel and at least one of iron and cobalt.   
     
     
         11 . The article as recited in  claim 9 , wherein the alloy includes 5-20% nickel. 
     
     
         12 . The article as recited in  claim 9 , wherein the alloy includes 1-5% of at least one of iron and cobalt. 
     
     
         13 . The article as recited in  claim 9 , wherein the alloy includes iron and excludes cobalt. 
     
     
         14 . The article as recited in  claim 9 , wherein the alloy includes cobalt and excludes iron. 
     
     
         15 . The article as recited in  claim 9 , wherein the zirconium, tungsten, nickel, and at least one of iron and cobalt are distributed throughout the alloy. 
     
     
         16 . The article as recited in  claim 9 , wherein the alloy, by weight, consists of:
 25-65% zirconium;   25-65% tungsten; and   6-25% of a combined amount of nickel and at least one of iron and cobalt.   
     
     
         17 . The article as recited in  claim 9 , wherein the geometric body is spherical, cylindrical, or polygonal. 
     
     
         18 . An article comprising:
 a reactive fragment formed of an alloy including, by weight:
 25-65% zirconium; 
 25-65% tungsten; and 
 6-25% of a combined amount of nickel and at least one of iron and cobalt. 
   
     
     
         19 . The article as recited in  claim 18 , wherein the alloy consists essentially of:
 25-65% zirconium;   25-65% tungsten; and   6-25% of a combined amount of nickel and at least one of iron and cobalt.   
     
     
         20 . The article as recited in  claim 18 , wherein the reactive fragment is spherical, cylindrical, or polygonal.