Patent ID: 9186726
Filing Date: 2015-11-17
Classification: B22F,B23B,B32B,B33Y,C04B,C22C,Y10T

Abstract:
1. A method of making a metallic or ceramic component, said method comprising: a) providing at least one first powder, said first powder comprising a plurality of composite particles, made of a core particle material, an intermediate layer on said core particle material, and an outer layer, wherein said core particle material has a hardness higher than both the intermediate layer and the outer layer, and said intermediate layer has a fracture toughness greater than both the core particle material and the outer layer; b) providing at least one second powder comprising a carbide material; c) forming a green body comprised of said first and second powder mixtures such that the first powder mixture forms a first portion of said green body with the second powder mixture forming a second portion of said green body; d) molding, pressing or shaping said green body to form a compact; and e) sintering said compact to form an article having portions of different juxtaposed properties, said first portion of said green body forming hard wear-resistant portion of said article and said second portion of said green body forming a tough, strong load bearing portion of said article.