Compositions of Hardmetal Materials with Novel Binders

Abstract

Hardmetal compositions each including hard particles having a first material and a binder matrix having a second, different material comprising rhenium or a Ni-based superalloy. A two-step sintering process may be used to fabricate such hardmetals at relatively low sintering temperatures in the solid-state phase to produce substantially fully-densified hardmetals.

1 . A material comprising:
 hard particles comprising a first material; and   a binder matrix comprising a second, different material which comprises a nickel-based superalloy, wherein the Ni-based superalloy comprises Re which is from about 7.5% to about 10% of a weight of the Ni-based superalloy.   
     
     
         2 . The material as in  claim 1 , wherein the first material comprises a carbide. 
     
     
         3 . The material as in  claim 2 , wherein the carbide comprises at least one of TiC, ZrC, HfC, VC, NbC, TaC, Cr 2 C 3 , Mo 2 C, and WC. 
     
     
         4 . The material as in  claim 1 , wherein said first material further comprises a nitride. 
     
     
         5 . The material as in  claim 4 , wherein said nitride comprises at least one of TiN, ZrN, HfN, VN, NbN, and TaN. 
     
     
         6 . The material as in  claim 2 , wherein said first material further comprises a carbide. 
     
     
         7 . The material as in  claim 6 , wherein said carbide comprises at least one of TiC, ZrC, HfC, VC, NbC, TaC, Cr 2 C 3 , Mo 2 C, and WC. 
     
     
         8 . The material as in  claim 1 , wherein said first material further comprises a boride. 
     
     
         9 . The material as in  claim 8 , wherein said first material comprises at least one of TiB 2 , ZrB 2 , HfB 2 , TaB 2 , VB 2 , MoB 2 , WB, and W 2 B. 
     
     
         10 . The material as in  claim 1 , wherein said first material further comprises at least one boride and at least one carbide. 
     
     
         11 . The material as in  claim 10 , wherein said first material comprises WC, TiC, TaC, and B 4 C. 
     
     
         12 . The material as in  claim 1 , wherein said first material comprises a silicide. 
     
     
         13 . The material as in  claim 12 , wherein said silicide comprises at least one of TaSi 2 , WSi 2 , NbSi 2 , and MoSi 2 . 
     
     
         14 . The material as in  claim 1 , wherein said binder matrix further comprises Ni. 
     
     
         15 . The material as in  claim 1 , wherein said binder matrix further comprises Fe. 
     
     
         16 . The material as in  claim 1 , wherein said binder matrix further comprises Mo. 
     
     
         17 . The material as in  claim 1 , wherein said binder matrix further comprises Cr.