A WEAR-RESISTANT MEMBER HAVING A HARD COMPOSITE COMPRISING HARD CONSTITUENTS HELD IN AN INFILTRANT MATRIX

• Main Author: MAJAGI, SHIVANAND, I
• Format: Patent
• Language: English; French
• Published: 21.07.2005
• Edition: 7
• Subjects: ALLOYS; CASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

A wear-resistant member (20) that includes a hard composite member (24) affixed to a support (22). The hard composite member (24) includes discrete hard constituents (34) distributed therein. Each one of the discrete hard constituents (34) has a surface area between about 0.001 square inches and about 16 square inches. The hard composite member (24) further contains a matrix powder (30) that includes particles wherein substantially all of the particles have a size smaller than the size of the hard constituents. The hard constituents (34) and the matrix powder (30) are bonded together by an infiltrant alloy (31) to form the hard composite member (24). The support (22) is made of a material that bonds with the infiltrant alloy (31). L'invention concerne un élément (20) résistant à l'usure contenant un élément composite dur (24) fixé à un support (22). L'élément composite dur (24) comprend des constituants durs discrets (34) distribués dans celui-ci. Chacun des constituants durs discrets (34) présente une zone de surface d'environ 0,001 pouces carrés à environ 16 pouces carrés. L'élément composite dur (24) contient également une poudre matricielle (30) formée de particules. Sensiblement toutes les particules présentent une dimension inférieure à la dimension des constituants durs. Les constituants durs (34) et la poudre matricielle (30) sont liés au moyen d'un alliage (31) d'infiltration de manière à former l'élément composite dur (24). Le support (22) est fait d'un matériau de liaison à l'alliage (31) d'infiltration.