Erosion resistant hard composite materials

摘要

A hard composite composition comprises a binder; and a polymodal blend of matrix powder. In an embodiment, the polymodal blend of matrix powder has at least one local maxima at a particle size of 30 μm or less, at least one local maxima at a particle size of 200 μm or more, and at least one local minima between a particle size of about 30 μm to about 200 μm that has a value that is less than the local maxima at a particle size of 30 μm or less.

主权项

1. A method of hardfacing a substrate comprising;
providing the substrate; and applying a hard composite material to a surface of the substrate; wherein the hard composite material comprises:
a binder; anda polymodal blend of matrix powder, wherein the polymodal blend of matrix powder comprises at least three local maxima that include at least a first local maxima at a particle size of 30 μm or less, a second local maxima between a particle size of 30 μm and 200 μm, a third local maxima at a particle size of 200 μm or more, and the polymodal blend of matrix powder further comprising a first local minima between the first local maxima and the second local maxima and a second local minima between the second local maxima and the third local maxima, wherein the second local maxima has a value that is less than the first local maxima.