Preparation method of nanoparticle/hollow sphere composite reinforced metal-based composite material

A nanoparticle and composite material technology, which is applied in the field of preparation of nanoparticle/hollow sphere composite reinforced metal matrix composite materials, can solve the problems of complex preparation process, high preparation cost, hollow sphere breakage, etc., and achieve simple process and ensure process Safe, avoid burning effect

Inactive Publication Date: 2020-02-14
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to prepare nanoparticle / hollow sphere composite reinforced metal matrix composites, the current preparation methods all have deficiencies, such as the preparation by stirring casting method, due to the difference in density between the hollow sphere and the metal matrix, the hollow sphere will be in the metal matrix Aggregation will occur in the middle, it is difficult to achieve uniform dispersion, and in the process of stirring, the hollow balls are prone to breakage, so that the effect of the hollow balls cannot be realized
Prepared by percolation casting method, nanoparticles cannot be effectively dispersed, and the preparation process is complicated, requiring multiple sets of equipment to realize the preparation of materials, and the preparation cost is high

Method used

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  • Preparation method of nanoparticle/hollow sphere composite reinforced metal-based composite material

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Embodiment 1

[0025] A method for preparing a nanoparticle / hollow sphere composite reinforced metal matrix composite material, comprising the following steps:

[0026] (1) The silicon carbide nano-particle reinforced LZ91 magnesium-lithium alloy composite blank is obtained by stirring casting method, and the mass fraction of the silicon carbide nano-particle in the silicon carbide nano-particle reinforced LZ91 magnesium-lithium alloy composite blank is 0.5%;

[0027] (2) Al 2 O hollow balls, Q235 steel perforated plates and silicon carbide nanoparticles reinforced LZ91 magnesium-lithium alloy composite blanks are loaded into Q235 steel ladles in sequence and sealed with argon arc welding. The hole diameter d is smaller than the diameter D of the hollow ball. The hole diameter d of the perforated plate is 3.5 mm, and the diameter D of the hollow ball is 4 mm. The Q235 ladle is covered with two air guide tubes. The first air guide tube is connected to the blank end for loading. The two air g...

Embodiment 2

[0031] A method for preparing a nanoparticle / hollow sphere composite reinforced metal matrix composite material, comprising the following steps:

[0032] (1) The carbon nanotube CNTs reinforced aluminum-lithium alloy composite blank is obtained by powder metallurgy, and the mass fraction of the carbon nanotube CNTs in the carbon nanotube CNTs reinforced aluminum-lithium alloy composite blank is 0.1wt%;

[0033] (2) Put SiC hollow spheres, 45# steel perforated plates and carbon nanotube CNTs reinforced aluminum-lithium alloy composite blanks into 45# steel ladles in sequence, and seal them with argon arc welding. 45# steel perforated plates are provided with Through the small hole, the aperture d of the small hole is smaller than the diameter D of the hollow ball. The aperture d of the 45# steel perforated plate is 0.2mm, and the diameter D of the hollow ball is 0.5mm. The 45# steel ladle is covered with two air ducts. The first The air guide tube is connected with the blank en...

Embodiment 3

[0037] A method for preparing a nanoparticle / hollow sphere composite reinforced metal matrix composite material, comprising the following steps:

[0038] (1) A silicon carbide nanoparticle reinforced aluminum alloy composite billet is obtained by stirring casting, and the mass fraction of the silicon carbide nanoparticle in the silicon carbide nanoparticle reinforced aluminum alloy composite billet is 10wt%;

[0039] (2) Al 2 o 3 / SiO 2Hollow balls, 20# steel perforated plates and silicon carbide nano-particle reinforced aluminum alloy composite blanks are sequentially loaded into 20# steel ladles and sealed with argon arc welding. The aperture d of the hole is smaller than the diameter D of the hollow ball. The aperture d of the 45# steel perforated plate is 4.5mm, and the diameter D of the hollow ball is 5mm. The 20# ladle is covered with two air guide tubes, and the first air guide tube is connected to the blank end. For load loading, the second air duct is connected to ...

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Abstract

The invention relates to a preparation method of a nanoparticle / hollow sphere composite reinforced metal-based composite material. The preparation method comprises the steps that firstly, a nanoparticle-reinforced metal-based composite material blank and hollow spheres are sealed in a steel capsule and isolated with a perforated plate in the middle, a first air guiding pipe is connected with the blank end, and a second air guiding pipe is connected with the hollow sphere end; secondly, the steel capsule is put into a box-type resistance furnace to be heated, vacuumizing is conducted through avacuum unit in the heating process to keep the vacuum degree in the steel capsule, melt is formed after the nanoparticle-reinforced metal-based composite material blank is molten, and the melt is loaded through the first air guiding pipe and enters spaces among the ceramic hollow spheres through the perforated plate; and lastly, the steel capsule is taken out from the box-type resistance furnace and cooled to room temperature, the steel capsule is removed in a machining mode, and finally the nanoparticle / hollow sphere composite reinforced metal-based composite material is prepared. Therefore,a way is provided for efficient, low-cost and high-performance preparation of the nanoparticle / hollow sphere composite reinforced metal-based composite material.

Description

technical field [0001] The invention relates to the technical field of metal-matrix composite material preparation, in particular to a method for preparing a nanoparticle / hollow sphere composite reinforced metal-matrix composite material. Background technique [0002] Metal matrix composites are composite materials that use metal as the matrix and ceramic particles, carbon nanotubes, hollow spheres, short fibers, whiskers, long fibers, etc. as reinforcements. It has the advantages of low density, high specific strength, and high specific stiffness. It has been widely used in the fields of aviation, aerospace and automobiles. At present, the preparation methods of metal matrix composites mainly include casting method and powder metallurgy method, among which casting method is the most widely used, mainly including stirring casting method and infiltration casting method. [0003] Different reinforcements are used to prepare composite materials, which have different performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22B9/04C22C21/00C22C23/00C22C32/00
CPCC22C1/1036C22B9/04C22C21/00C22C23/00C22C32/0005C22C2026/002C22C1/1047
Inventor 褚楚王耀奇李晓华侯红亮
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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