By infiltration technology,a uniforn,wear resistant and good metallurgy combined with cast steel hi-Cr cast iron-based tungsten cabide particles-strengthened compound layer was gained.The impact resistance of the composite materials with different WC% was measured and wear mechanism was analyzed.The result shows: that the impact resistance of the composite materials is better when WC% are 20%30% in composites materials.Compared with cast steel,impact wear resistance of the composite is greatly superior to t...