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Infiltration technology

A process and impregnation technology, applied in the field of impregnation process, can solve problems such as dislocation and twinning

Inactive Publication Date: 2016-01-06
WUXI QIAOYANG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Chen Yu et al. prepared Cr / Mg composite materials by vacuum pressure impregnation method. When the fiber volume fraction reaches 55%, the bending strength of the composite material can reach 1200MPa. Transmission electron microscope analysis shows that the interface is well bonded and there is no chemical reaction between the matrix and the fiber. , but there are γ-Mg17Al12 phase precipitates of different sizes and shapes, and there are a large number of crystal defects such as dislocations and twins near the interface

Method used

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Examples

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Effect test

Embodiment 1

[0020] An impregnation process, the process is SiC p _The impregnation process of Zn composite materials, according to the requirements of material performance, select the ratio of reinforcement content and zinc base, and then prepare composite materials through appropriate heat treatment parameters, including: select the appropriate ratio of reinforcement and zinc base——Silicon carbide Particle cleaning - drying - heat preservation - the mold is put into the crucible to seal - vacuuming - heating - pressurizing - holding pressure - cooling. The particle size of the composite material is 40 μm, the Si powder content is 7%, and the vacuum degree is 10 -3 -10 -4 MPa, the temperature is 900 degrees, the control accuracy is ±1 degrees, the pressure value is 0.5 MPa, the holding time is 10 minutes, and the cooling method is furnace cooling.

Embodiment 2

[0022] An impregnation process, the process is SiC p_The impregnation process of Al composite materials, according to the requirements of material performance, select the ratio of reinforcement content and aluminum matrix, and then prepare composite materials through appropriate heat treatment parameters, including: selecting the appropriate ratio of reinforcement and aluminum matrix - silicon carbide Particle cleaning - drying - heat preservation - the mold is put into the crucible to seal - vacuuming - heating - pressurizing - holding pressure - cooling. The particle size of the composite material is 65 μm, the Si powder content is 10%, and the vacuum degree is 10 -3 -10 -4 MPa, the temperature is 1200 degrees, the control accuracy is ±1 degrees, the pressure value is 0.8 MPa, the holding time is 15 minutes, and the cooling method is furnace cooling.

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PUM

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Abstract

The invention discloses an infiltration technology which is an infiltration technology of a SiCp_Zn composite. According to the infiltration technology, a content ratio of reinforcement to a zinc base is selected according to the requirement for properties of the material, and then the composite is prepared through proper thermal treatment parameters. The infiltration technology comprises the steps as follows: selection of a proper ratio of the reinforcement to the zinc base, silicon carbide particle cleaning, drying, heat preservation, placement of a mould in a crucible and sealing, vacuum-pumping, heating, pressurizing, pressure maintaining and cooling. The particle size of the composite is 40-60 [mu]m, the vacuum degree is 10<-3>-10<-4> MPa, the temperature is 800-1,200 DEG C, the control accuracy is + / -1 degree, the pressure value of pressurizing is 0.5-0.9 MPa, the heat preservation time is 10-15 min, and the cooling way is furnace cooling. According to the infiltration technology, the ratio of the reinforcement to the zinc base can be changed so as to meet the requirements of different technologies for mechanical properties of the material, and the technology has good permeability and is not liable to produce air pores or other defects.

Description

technical field [0001] The invention relates to an impregnation process. Background technique [0002] Metal matrix composites (Metal Matrix Composites, MMC for short) is a composite material with metal as the matrix phase. It not only has the properties of metal, but also has metal properties such as high service temperature, high shear strength, flame retardancy, no aging, no moisture absorption, no gas release, wear resistance, electrical and thermal conductivity, which cannot be achieved by resin-based composite materials. Materials with broad application prospects in structures and some industrial fields. As a new type of engineering structural material, metal matrix composites not only must meet the various properties required by the manufactured machinery and machine parts in different working environments, but also should be compared with traditional materials in terms of price, preparation technology, and processing technology. have its advantages. The biggest ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C29/02
Inventor 沈秋
Owner WUXI QIAOYANG MACHINERY MFG