Patent ID: 7731776

Claim:
A bimodal cermet composition comprising: a) a ceramic phase, and b) a metal binder phase, wherein said ceramic phase is a metal boride with a bimodal distribution of non-spherical shaped particles, wherein at least one metal is selected from the group consisting of Group IV, Group V, Group VI elements of the Long Form of The Periodic Table of Elements and mixtures thereof, wherein said metal binder phase comprises at least one first clement selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, and at least one second element selected from the group consisting of Cr, Al, Si and Y, and Ti, wherein said metal binder phase comprises about 5 to 40 vol. % of the volume of said bimodal cermet composition, wherein said bimodal distribution of non-spherical shaped particles comprises fine grit particles in the size range of about 3 to 60 microns and coarse grit particles in the size range of about 106 to 800 microns, wherein said coarse grit particles comprise at least 50 vol. % of the ceramic phase, and wherein the normalized erosion resistance HEAT index of the bimodal cermet composition ranges from 7 to 11.