Fusion carbide of refractory metal cementing

Abstract

Fusion carbide of a refractory metal cementing is disclosed, which includes at least four strengthening compound phases and at least one refractory metal cementing phase. The strengthening compound phases and the refractory metal cementing phase are combined by a fusion method, for manufacturing the refractory metal cementing fusion carbide. By using the fusion method, the problems of low density and high cost in the conventional sintering method for combining the strengthening phase and the cementing phase can be solved, and composite material with high hardness, high melting point, and high toughness can be manufactured. Moreover, comparing with the conventional sintered cermet composite material, the refractory metal cementing fusion carbide has the advantages including rapid and convenient manufacturing, with desired density, and hardness and toughness.

What is claimed is: 
     
         1 . A fusion carbide of a refractory metal cementing, comprising: at least four strengthening compound phases and at least one refractory metal cementing phase, wherein the strengthening compound phases and the refractory metal cementing phase are combined by a fusion method, for manufacturing a refractory metal cementing fusion carbide. 
     
     
         2 . The fusion carbide of the refractory metal cementing as  claim 1 , wherein the strengthening phase compounds are chosen from a group consisting of TiC, ZrC, NbC, VC, TaC, WC, HfC, TiN, and ZrN, for being combined with the refractory metal cementing phase. 
     
     
         3 . The fusion carbide of the refractory metal cementing as  claim 1 , wherein the refractory metal cementing phase is chosen from a group consisting of Mo, W, Nb, Hf, Ta, and Re, for being combined with the strengthening phase compounds. 
     
     
         4 . The fusion carbide of the refractory metal cementing as  claim 2 , wherein the fusion method is a vacuum arc melting method executed by the temperature which exceeds 3,500 degrees Celsius, for making the manufactured refractory metal cementing fusion carbide to have a composite structure including a dendrite and an inter-dendrite. 
     
     
         5 . The fusion carbide of the refractory metal cementing as  claim 3 , wherein the fusion method is a vacuum arc melting method executed by the temperature which exceeds 3,500 degrees Celsius, for making the manufactured refractory metal cementing fusion carbide to have a composite structure including a dendrite and an inter-dendrite.