Method for preparing silicon carbide particle reinforced aluminum matrix composite material

A technology of silicon carbide particles and enhanced aluminum base, applied in the field of metal materials, can solve the problem of high manufacturing cost of aluminum-carbon intermediate alloy, and achieve the effects of clean surface, reduced production cost and high comprehensive mechanical properties

Active Publication Date: 2013-06-19
SHANDONG UNIV
View PDF8 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aluminum-carbon master alloy required f

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Firstly, the required raw materials are prepared according to the following mass percentages: 95.0% aluminum-silicon alloy powder, 5.0% modified graphite powder; wherein, the mass percentage of silicon in the aluminum-silicon alloy powder is 21.0%.

[0018] (2) Al-Si alloy powder is ball-milled for 4 hours, then mixed with modified graphite powder for 6 hours through physical and mechanical methods, and put into a mold for cold pressing.

[0019] (3) Put the above-mentioned cold-pressed block into a vacuum sintering furnace, the heating temperature is 670°C, the holding time is 80 minutes, and then hot-extruded, and the in-situ SiC particle-reinforced aluminum matrix can be obtained after the furnace is cooled. composite material. The specific composition of the composite material is: Al-9Si-16SiC.

Embodiment 2

[0021] (1) First prepare the required raw materials according to the following mass percentages: 93.0% aluminum-silicon alloy powder, 7.0% modified graphite powder; wherein, the mass percentage of silicon in the aluminum-silicon alloy powder is 35.0%.

[0022] (2) Al-Si alloy powder is ball-milled for 8 hours, then mixed with modified graphite powder for 10 hours by physical and mechanical methods, and put into a mold for cold pressing.

[0023] (3) Put the above-mentioned cold-pressed block into a vacuum sintering furnace, the heating temperature is 950°C, the holding time is 60 minutes, and then hot-extruded, and the in-situ SiC particle-reinforced aluminum matrix can be obtained after the furnace is cooled. composite material. The specific composition of the composite material is: Al-16Si-22SiC.

Embodiment 3

[0025] (1) First prepare the required raw materials according to the following mass percentages: 90.0% aluminum-silicon alloy powder, 10.0% copper-coated graphite powder; wherein, the mass percentage of silicon in the aluminum-silicon alloy powder is 30.0%, and copper-coated graphite powder The mass percent content of medium carbon is 50.0%.

[0026] (2) After the aluminum-silicon alloy powder is ball milled for 12 hours, it is mixed with the copper-coated graphite powder for 15 hours by physical and mechanical methods, and then put into a mold for cold pressing.

[0027] (3) Put the above-mentioned cold-pressed block into a vacuum sintering furnace, the heating temperature is 800°C, the holding time is 90 minutes, and then hot-extruded, and the in-situ SiC particle-reinforced aluminum matrix can be obtained after the furnace is cooled. composite material. The specific composition of the composite material is: Al-16Si-16SiC-5Cu.

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

No PUM Login to view more

Abstract

The invention belongs to the field of metal materials, and relates to a method for preparing a silicon carbide particle reinforced aluminum matrix composite material. The method comprises the following steps of: carrying out ball milling on Al-Si alloy powder for 4-16 hours, mixing the Al-Si alloy powder with modified graphite powder or copper-coated graphite powder through adopting a physical mechanical method for 4-20 hours, putting the mixture into a mould to be subjected to cold press molding, and putting a cold press molding block body into a vacuum furnace or a sintering furnace under the inert atmosphere protection, wherein the heating temperature is 670-1200 DEG C, and the insulating time is 15-120 minutes; and then carrying out hot extrusion molding on the block, and cooling the furnace so as to obtain the in-situ formation silicon carbide particle reinforced aluminum matrix composite material. By utilizing the method, the silicon carbide particle reinforced aluminum matrix composite material with excellent comprehensive mechanical properties such as high strength and high abrasion resistance can be prepared, and the preparation method is simple, low in cost and suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a preparation method of silicon carbide particle-reinforced aluminum-based composite materials. Background technique [0002] Aluminum matrix composites have the advantages of high specific strength and specific stiffness, good high temperature performance, good wear resistance and fatigue resistance, and have become one of the most commonly used and most important materials in metal matrix composites, especially particle reinforced aluminum Matrix composites not only have good mechanical properties, but also have certain economic feasibility. Silicon carbide particles have the advantages of high specific strength, wear resistance, fatigue resistance, low thermal expansion coefficient, high melting point and good thermal stability. Therefore, silicon carbide particle reinforced aluminum matrix composites have a wide range of applications in aerospace, automotive, electr...

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
IPC IPC(8): C22C1/10C22C1/05C22C21/00C22C32/00
Inventor 刘相法杜晓璠李大奎王栋
Owner SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap