Ceramic steel and method of preparing the same

Abstract

A ceramic steel, which is composed of a ceramic phase and a metal phase. The ceramic phase is the boride consisted of one or more elements of Fe, Co, Ni, and one or more metal elements of IVB, VB and VIB of the fourth, fifth and sixth periodic metals. And the metal phase is an alloy composed of Mo and one or more metal elements of Fe, Co, Ni. The ceramic steel has properties of high hardness, excellent wear resistance, corrosion resistance, high temperature resistance, and has good weldability with steel and other metal materials. The ceramic steel can be used for producing knives, cutting tools, and all kinds of wear resistant, corrosion resistant, high temperature resistant materials and all kinds of structural components.

1 . A ceramic steel, wherein: said ceramic steel comprises a ceramic phase and a metal phase, said ceramic phase is a boride comprising one or more elements of Fe, Co, Ni, and one or more elements of IVB, VB and VIB periodic metals; said metal phase is an alloy composed of Mo and one or more metal elements of Fe, Co, Ni. 
     
     
         2 . The ceramic steel according to  claim 1 , wherein said ceramic steel further comprises an additive comprising C and at least one of V, Cr, Mn, and Cu. 
     
     
         3 . The ceramic steel according to  claim 1  wherein the weight percentage of each chemical element of said ceramic steel is: B 5˜10 wt. %, Ti 0˜50 wt. %, V 0˜50 wt. %, Cr 0˜50 wt. %, Zr 0˜50 wt. %, Nb 0˜50 wt. %, Mo 20˜60 wt. %, Fe 10˜40 wt. %, Ni 0˜15 wt. %, Co 0˜20 wt. %, and each of the elements in said additive is no more than 5 wt. % based on the total weight of each element in the ceramic steel. 
     
     
         4 . A method for producing a knife, a cutting tool, a wear resistant, corrosion resistant, high temperature resistant material, or a structural component comprising the wear resistant, corrosion resistant, high temperature resistant material, comprising using the ceramic steel according to  claim 1  as a starting material.