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Fiber-enhanced aerogel-metal composite material and preparation method thereof

A technology of metal composite materials and composite materials, which is applied in the field of preparation of metal matrix composite materials, can solve the problems of high brittleness, limitation, low resistance to mechanical shock and thermal shock, etc., and achieve strong bonding, promotion of upgrades, and good compression resistance Effect

Inactive Publication Date: 2017-08-29
浙江圣润纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Ceramics have excellent high temperature resistance properties, such as high temperature compressive strength, high elastic modulus, creep resistance, oxidation resistance, corrosion resistance, wear resistance, etc., but their fatal disadvantage is high brittleness, which is manifested in resistance to mechanical shock and thermal shock The properties are very low, so it is very limited as a structural material in the high temperature field

Method used

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  • Fiber-enhanced aerogel-metal composite material and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0039] According to the method of patent CN2014102703529, the quartz fiber felt reinforced silica airgel plate is prepared, the size of the silica airgel plate is 300mm*300mm*10mm, the density of the silica airgel is 110kg / m3, and the average pore diameter is 37nm , the porosity is 91%. Aluminum is used as the metal, and aluminum liquid is prepared by heating the metal aluminum to 780°C, and 1%wt metal chromium is added as a permeation aid solvent. The composite process adopts extrusion impregnation technology, pre-lays the glass fiber reinforced silica airgel plate in the closed cavity, locks the mold, injects aluminum liquid, slowly pressurizes to 85MPa, and the extrusion speed is 1cm / s , hold the pressure for 20 minutes, soak the reinforced material, cool and solidify, and then demould to form a composite material.

Embodiment 2

[0041] According to the method of patent CN2015102953891, the carbon fiber unidirectional cloth reinforced silica-titania airgel cloth is prepared, the size of the silica-titania airgel cloth is 300mm*300mm*2mm, and the density of the silica airgel is 80kg / m3, the average pore diameter is 45nm, and the porosity is 93%. The metal is aluminum alloy with the following composition: 10% Si, 0.5% Ca, and 6% Mg. After heating to 850°C to become aluminum alloy liquid, 3% nano-iron oxide is added as a penetration aid. The composite process adopts pressureless impregnation technology, fiber unidirectional cloth reinforced silica-titania airgel cloth is pre-laid in the closed mold cavity, argon gas is introduced as protective gas, aluminum alloy liquid is injected, and ultrasonic waves are introduced. After 10 minutes, the impregnation is completed, and the composite material is obtained after cooling.

Embodiment 3

[0043] According to the method of patent CN2015102953891, the tungsten wire reinforced zirconia airgel thin felt is prepared. The size of the tungsten wire reinforced zirconia airgel thin felt is 200mm*200mm*1mm, and the density of the zirconia airgel is 108kg / m3, the average The pore diameter is 32nm and the porosity is 90%. The metal adopts nickel alloy with the following composition, Ni is 32%, Cr is 21%, and the nickel alloy liquid is prepared in a furnace at 1480 °C. The composite process adopts vacuum impregnation technology. The tungsten wire reinforced zirconia airgel thin felt is pre-laid in the closed mold cavity, and the mold cavity is vacuumed to a degree of 20 torr. After the infiltration is completed, the composite material is obtained after cooling.

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Abstract

The invention relates to a fiber-enhanced aerogel-metal composite material and a preparation method thereof. Fiber-enhanced aerogel is taken as a reinforcement material, and metal is taken as a substrate and fills a three-dimensional nanometer hole structure of aerogel to form a composite material having a structure of interlacing metal with a nanometer three-dimensional network of aerogel. The metal-based composite material has improved high temperature resistance, wear resistance, compression resistance, impact resistance, fracture resistance and corrosion resistance. The method is simple and easy in technical process and beneficial for industrial massive production, and can promote upgrading of conventional metal-based composite material industry. The fiber-enhanced aerogel-metal composite material has high application value in the fields of national defense and military, space and aeronautics, high-speed trains, ships and vessels, and automobiles.

Description

technical field [0001] The invention relates to a preparation method of a metal matrix composite material, in particular to a fiber-reinforced airgel-metal matrix composite material. Background technique [0002] With the development of modern high technology, the requirements for material performance are increasing day by day. It is difficult for a single material to meet the comprehensive requirements for performance. The compounding of materials is one of the inevitable trends in the development of materials. [0003] Ceramics have excellent high temperature resistance properties, such as high temperature compressive strength, high elastic modulus, creep resistance, oxidation resistance, corrosion resistance, wear resistance, etc., but their fatal disadvantage is high brittleness, which is manifested in resistance to mechanical shock and thermal shock The properties are very low, so it is greatly limited as a structural material in the high temperature field. [0004] Me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C47/06C22C47/08B22D23/04
CPCC22C1/1015C22C1/1036C22C47/06C22C47/08B22D23/04C22C1/1073
Inventor 金承黎
Owner 浙江圣润纳米科技有限公司
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