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Metal-based composite material and preparation method thereof

A composite material and metal material technology, which is applied in the field of metal matrix composite materials and its preparation, can solve the problems that the strength, density and toughness cannot meet the requirements, the lightweight materials that meet the requirements cannot be prepared, and the performance distribution is oriented, etc. To achieve the effect of favorable oxidation bonding, easy oxidation, and large aspect ratio

Active Publication Date: 2020-04-28
珠海凯利得新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the common ultra-light materials are resin-based composite materials, which have the characteristics of light weight and high strength, but their application temperature is limited, and there are problems of orientation and aging in performance distribution; metal-based ceramic composite materials have high temperature resistance, various Isotropic, strong corrosion resistance and anti-aging characteristics, but the current process is still unable to prepare lightweight materials that meet the requirements, and there are often problems with internal unevenness, strength, density and toughness that still cannot meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for preparing a metal matrix composite material, comprising the following steps:

[0035] (1) Weigh Al according to the formula 2 o 3 Hollow microspheres 40Kg, silicon carbide whiskers 10Kg, silicon carbide particles 30Kg, selected Al 2 o 3 The particle size of hollow microspheres is 10-30μm, the ratio of wall thickness to radius t / R is (0.030-0.050): 1; the particle size of silicon carbide whiskers is 50-70nm, and the aspect ratio is (20-40): 1; The particle size of silicon carbide particles is 10-20nm. Then put it into a V-shaped mixing tank for pre-mixing for 2 hours, and the speed of the mixing tank is 60r / min; weigh 10Kg of paraffin, put it into a heating furnace for preheating, and the preheating temperature is 200°C to remove the moisture and flammable impurities in the raw materials. make it melt; then pre-mixed Al 2 o 3 Put the hollow microspheres, silicon carbide whiskers, silicon carbide particles and melted paraffin into a mixing tank equipped...

Embodiment 2

[0040] A method for preparing a metal matrix composite material, comprising the following steps:

[0041] (1) Weigh Al according to the formula 2 o 3 Hollow microspheres 10Kg, silicon carbide whiskers 10Kg, silicon carbide particles 30Kg, selected Al 2 o 3 The particle size of hollow microspheres is 40-60μm, the ratio of wall thickness to radius t / R is (0.050-0.080): 1; the particle size of silicon carbide whiskers is 80-110nm, and the aspect ratio is (65-90): 1; The particle size of silicon carbide particles is 30-40nm. Then put it into a V-shaped mixing tank for pre-mixing for 2 hours, and the mixing tank speed is 60r / min; weigh 20Kg of paraffin, put it into a heating furnace for preheating, and the preheating temperature is 200°C to remove the moisture and flammable impurities in the raw materials. make it melt; then pre-mixed Al 2 o 3 Put the hollow microspheres, silicon carbide whiskers, silicon carbide particles and melted paraffin into a mixing tank equipped with ...

Embodiment 3

[0046] A method for preparing a metal matrix composite material, comprising the following steps:

[0047] (1) Weigh Al according to the formula 2 o 3 Hollow microspheres 80Kg, silicon carbide whiskers 15Kg, silicon carbide particles 50Kg, selected Al 2 o 3 The particle size of hollow microspheres is 30-50μm, the ratio of wall thickness to radius t / R is (0.040-0.060): 1; the particle size of silicon carbide whiskers is 60-80nm, and the aspect ratio is (50-70): 1; The particle size of silicon carbide particles is 20-30nm. Then put it in a V-shaped mixing tank for pre-mixing for 2 hours, and the mixing tank speed is 60r / min; weigh 60Kg of paraffin, put it in a heating furnace for preheating, and the preheating temperature is 200°C to remove the moisture and flammable impurities in the raw materials. make it melt; then pre-mixed Al 2 o 3 Put the hollow microspheres, silicon carbide whiskers, silicon carbide particles and melted paraffin into a mixing tank equipped with a hea...

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Abstract

The invention belongs to the field of materials, and discloses a metal-based composite material. The metal-based composite material comprises Al2O3 hollow microspheres, silicon carbide, a binder and ametal material, and the particle size of the Al2O3 hollow microspheres is 10-60 micrometres. According to a preparation method of the metal-based composite material, the metal-based composite material is prepared by adopting an infiltration casting method, the Al2O3 hollow microspheres, the silicon carbide and the binder are adopted as a raw material to prepare a ceramic preform with porous property and high strength, and then a metal solution enters the ceramic preform under the action of pressurization and capillary force between the ceramic preforms and is compounded to obtain the metal-based composite material. Through reasonable proportioning and cooperation of the Al2O3 hollow microspheres, silicon carbide particles and silicon carbide whiskers, a ceramic preform material with uniform pores is formed under the effects of full mixing and high-temperature bonding, and after infiltration with the metal solution, the obtained metal-based composite material is small in density whichcan reach 1.87 gram per cubic meter, uniform in texture and high in mechanical strength, the compression strength can be larger than 400 MPa, the plasticity is good, the toughness is high, and the damage resistance is high.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a metal matrix composite material and a preparation method thereof. Background technique [0002] Lightweight and high-strength composite materials are an important research direction of modern advanced composite materials. They are widely used in aerospace, deep-sea buoyancy machines, fan blades and other fields that have dual requirements for strength and density of materials. The core issue in this composite material is how to increase its strength and reduce its density. [0003] At present, the common ultra-light materials are resin-based composite materials, which have the characteristics of light weight and high strength, but their application temperature is limited, and there are problems of orientation and aging in performance distribution; metal-based ceramic composite materials have high temperature resistance, various Isotropic, strong corrosion resistance and anti-aging cha...

Claims

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Application Information

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IPC IPC(8): C22C47/06C22C47/08C22C49/14C22C101/14C22C121/00
CPCC22C47/06C22C47/08C22C49/14
Inventor 赵楠范农杰邓宏论杨建荣赖龙
Owner 珠海凯利得新材料有限公司
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