초록 ▼

A boronized wear-resistant material that includes a boron-containing composition is disclosed. The boron-containing composition includes tungsten carbide and a compound represented by the formula W3MB3, where M is selected from the group consisting of iron, nickel, cobalt and alloys thereof. Particu

A boronized wear-resistant material that includes a boron-containing composition is disclosed. The boron-containing composition includes tungsten carbide and a compound represented by the formula W3MB3, where M is selected from the group consisting of iron, nickel, cobalt and alloys thereof. Particularly, a boride layer containing WC and W3CoB3 may be formed over a cemented tungsten carbide substrate by a suitable boronizing process. Additional compounds present in the boride layer include CoB, W2CoB2, and WB. A relatively thick and uniform boride layer may be obtained over a carbide substrate to form a wear-resistant body. Such a wear-resistant body may be used to manufacture cutting tools, drawing dies, inserts for an earth-boring bit, face seals, bearing surfaces, nozzles, and so on.

대표청구항 ▼

1. A boron-containing composition, obtained by the method comprising:providing a substrate formed of cemented tungsten carbide in a cobalt matrix; contacting the substrate with a boron-yielding material, an activator and a filler; and heating the substrate and the boron-yielding material to at least

1. A boron-containing composition, obtained by the method comprising:providing a substrate formed of cemented tungsten carbide in a cobalt matrix; contacting the substrate with a boron-yielding material, an activator and a filler; and heating the substrate and the boron-yielding material to at least 800.degree. C. for at least 8 hours so as to allow boron to molecularly diffuse into the substrate and form a boride layer integral with the substrate, wherein the boride layer comprises a compound having the formula W3CoB3.