Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

One-step method for preparing metal matrix lightweight composites

A composite material and metal-based technology, which is applied in the field of preparing metal-based lightweight composite materials, can solve the problems of high density, complex preparation process, and high cost, and achieve the effect of reducing density, simple process flow, and fewer processes

Inactive Publication Date: 2018-08-24
TONGJI UNIV
View PDF9 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for manufacturing foamed metal matrix composites, which solves the problems of high cost, high density and complicated preparation process of general hollow spherical metal matrix composites

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • One-step method for preparing metal matrix lightweight composites
  • One-step method for preparing metal matrix lightweight composites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] In this embodiment, aluminum alloy is selected as the base metal, and SiC hollow spheres and Al alloys mixed in any proportion are selected. 2 o 3 Hollow ball 5, the diameter of the hollow ball is 0.5mm-5mm, SiC hollow ball and Al 2 o 3 The hollow sphere has a high melting point and high hardness, and can be fully mixed with aluminum alloy without significantly reducing the compressibility of the alloy material.

[0024] The mold used for the preparation method (see figure 2 ) consists of a pressure holding mold 1, a crucible 2, a resistance heating furnace 3, a large porous ceramic or graphite plate 4, a vacuum chamber 6, a small porous ceramic or graphite plate 7 and a vacuum system 8. The preparation steps are: (1) pickling hollow spheres with a diameter of 0.5-5mm or heat treatment at 300-800°C for 2-5h; Small-pore porous ceramics or graphite 7, and then the pretreated hollow balls are added to the mold, the surface layer is covered with a commercially availabl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
thicknessaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a one-stage method for preparing a metal matrix light-weighted composite material. The invention uses the method of pressure maintaining percolation and vacuum suction casting to make molten metal immerse into the gaps among hollow spheres by penetrating through a porous ceramic plate or a graphite plate under the function of negative pressure, after the molten metal is cooled down after totally infiltration, and finally, the molten metal is demoulded and taken out, then a foamed metal matrix composite material including closed bubbles can be obtained. The hollow spheres are mixed hollow spheres of two or more than two kinds of Al2O3 hollow spheres, SiC hollow spheres, C hollow spheres or glazed hollow beads of different or same sizes. The porosity of the metal matrix composite material prepared by the method of the invention can reach more than 60% and the density can be obviously reduced, besides, the compression strength can be improved by 20-50% compared with the similar product, so that the high-strength and light-weighted matrix light-weighted composite material with various functions like damp shock absorption, sound insulation and noise reduction, energy absorption can be obtained. According to the one-stage method for preparing the metal matrix light-weighted composite material disclosed by the invention, the process is simple, the procedure is less and the applicable range to the varieties and sizes of the hollow sphere particles is wide, and nearly no selection to the matrix metal, the foam metal products of different densities can be prepared.

Description

technical field [0001] The invention relates to a method for preparing metal-based lightweight composite materials in one step. Specifically, it is a method for preparing a metal matrix composite material with a foam structure by using one or more closed hollow sphere fillers of different sizes. The hollow spheres used do not need to be prefabricated in a mold, but a metal matrix lightweight composite material is prepared in one step. The material prepared by this method not only has excellent compression performance, but also can significantly reduce the material density, thereby achieving the purpose of light weight. Background technique [0002] Metal matrix composites are composite materials that use metal or alloy as the matrix and fibers, whiskers, particles, etc. At the same time, it also has the advantages of thermal conductivity, electrical conductivity, wear resistance, small thermal expansion coefficient, good damping, no moisture absorption, no aging and no poll...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22D18/06B22D19/14
CPCB22D18/06B22D19/14
Inventor 胡正飞张振蔡振武何大海蒋凯雁
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com