| 摘要 |
<p>The invention relates to a braze material comprising a braze metal system; and a coated superhard particle comprising a superhard particle; a primary layer of a carbide forming element; a secondary layer of a high melting point metal selected from W, Mo, Cr, Ni, Ta, Au, Pt, Pd, Nb or any combination / alloy thereof and an overcoat of Ag, Ni, Cu, Au, Pd, Pt, Rh, Os, Ir, Re, any combination / alloy thereof and alloys including bronze (Cu/Sn), silver/bronze and silver/tin. The invention further relates to an encapsulated superhard particle including a superhard particle optionally a coating applied to the superhard particle and a layer of braze metal system encapsulated on the particle wherein the encapsulated superhard particle includes a plurality of encapsulation layers and/or the encapsulation layer(s) include(s) a discrete or continuous gradient.</p> |
