Patent ID: 7175686
Filing Date: 2007-02-13
Classification: B04C,C22C,C23C

Abstract:
1. A cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and a binder phase (RS) wherein, P is a metal selected from the group consisting of Si, Mn, Fe, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and mixtures thereof, Q is nitride, R is a metal selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, S consists essentially of at least one element selected from Cr, Si, Y and mixtures thereof, and at least one reactive wetting aliovalent element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and mixtures thereof, wherein the combined weights of said Cr, Si, and Y and mixtures thereof is at least 12 wt % based on the weight of the binder phase (RS) and wherein the ceramic phase (PO) ranges from about 30 to 95 vol % based on the volume of the cermet.