US 2025/0109461 A1 · METAL-COATED METAL-MATRIX COMPOSITE AND MANUFACTURING METHOD OF METAL-COATED METAL-MATRIX COMPOSITE

Abstract

An object of the present invention is to develop a technique for providing a novel metal matrix composite capable of stably suppressing problems of conventional composites formed with a reinforcing material and a matrix material, such as a metal, the problems being, for example, inferior mechanical properties such as tensile and bending strengths to those of single-phase materials, such as a metal, coarser surface roughness due to, for example, chipping and wear of a cutting edge caused by fall-off of a reinforcing material or collision of a blade with a hard reinforcing material during precision shaping machining, and inferior workability. There is provided a metal-coated metal matrix composite formed by compounding a matrix material, such as a pure metal, and a reinforcing material, such as ceramic, wherein the reinforcing material is a porous molded body and regular unevenness is provided on the surfaces of the molded body, and thereby the metal-coated metal matrix composite has, on the surfaces thereof, a metal coating layer comprising the unevenness and being continuously integrated with the matrix material forming the composite; and the metal coating layer has a thickness of 0.5 mm to 5 mm, and the unevenness has a height difference of 0.1 mm or more and the height difference is within a range of 50% or less of the thickness of the metal coating layer, and the shape of the unevenness is periodic.

Claims10

Dependent claims

A metal-coated metal matrix composite that is a metal matrix composite being a pressure-cast product, formed:

using, as a matrix material, a pure metal or an alloy, including aluminum or an aluminum alloy, magnesium or a magnesium alloy, or copper or a copper alloy;
using, as a reinforcing material, a material comprising ceramic particles or metal particles different from the matrix material;
and compounding the matrix material and the reinforcing material, wherein
the reinforcing material is a porous molded body and regular unevenness is provided on the surfaces of the molded body, and thereby the metal-coated metal matrix composite has, on the surfaces thereof, a continuously integrated metal coating layer comprising the unevenness and composed of the matrix material forming the composite;
and
the metal coating layer has a thickness of 0.5 mm to 5 mm, and the unevenness has a height difference of 0.1 mm or more and the height difference is within a range of 50% or less of the thickness of the metal coating layer, and the shape of the unevenness is periodic.

3 more elements

A method for producing a metal-coated metal matrix composite, the method being a method for obtaining a metal-coated metal matrix composite being a pressure-cast product by compounding a matrix material that is a pure metal or an alloy, including aluminum or an aluminum alloy, magnesium or a magnesium alloy, or copper or a copper alloy, and a reinforcing material being a material different from the matrix material and comprising ceramic particles or metal particles, wherein

the method comprises a composite forming step of setting the reinforcing material being a porous molded body in a metal mold, impregnating and filling the pores of the porous molded body with the molten matrix material by a pressure casting method to compound the reinforcing material and the matrix material to obtain a metal matrix composite;
in the composite forming step, a porous molded body having regular unevenness provided on the surfaces thereof is used as the porous molded body, and thereby a continuously integrated metal coating layer comprising the unevenness, composed of the matrix material, and having a thickness of 0.5 mm to 5 mm is simultaneously formed on the surfaces of the metal matrix composite obtained by impregnating and filling the pores with the matrix material by the pressure casting method;
and
the unevenness has a height difference of 0.1 mm or more and the height difference is within a range of 50% or less of the thickness of the metal coating layer, and the shape of the unevenness is periodic.

1 more element

Dependencies are inferred from the claim text.

Metal-coated metal-matrix composite and manufacturing method of metal-coated metal-matrix composite

Life of this patent

Metal-coated metal-matrix composite and manufacturing method of metal-coated metal-matrix composite

Life of this patent

Abstract

Claims10