Method for preparing SiCpAl composite material

A composite material and composite powder technology, which is applied in the field of preparation of rare metal materials, can solve problems such as poor wettability and poor dispersion of ultrafine particles, and achieve the effects of avoiding poor wettability, diverse shapes of manufacturing materials, and low cost

Inactive Publication Date: 2016-05-04
SHAANXI SHENGMAI PETROLEUM
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The poor wettability of reinforcing materials and matrix and poor dispersion of ultrafine particles in the traditional stirring and dispersion method have always been problems that need to be solved.

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

specific Embodiment approach

[0017] A method for preparing SiCp / Al composite material, adopts following steps:

[0018] Step 1: SiC-Al composite powder preparation:

[0019] Put SiC powder and Al powder into a ball mill tank for ball milling, the ball-to-material ratio is 20:1, and SiC-Al composite powder is obtained after ball milling.

[0020] Step 2: casting body preparation:

[0021] Heat and melt the pure aluminum ingot, add the composite powder obtained by ball milling after degassing and slag removal and stir, then raise the temperature to 700°C, and cast into shape after 20 minutes.

[0022] Among them, the average particle size of the SiC powder is 0.55 μm, and the SiC powder needs to be preheated at 200 ° C for 8 hours to remove water vapor before mixing. The ball milling tank adopts a drum type atmosphere to protect the ball milling tank. The milling balls of the ball milling tank are made of high-density tungsten carbide balls. The ball mill needs to be milled under the protection of argon...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of preparation of rare metal materials, and concretely relates to a method for preparing a SiCp/Al composite material. The method for preparing the SiCp/Al composite material comprises the following steps: 1, preparing SiC-Al composite powder: filing a ball milling pot with SiC powder and Al powder, and carrying out ball milling according to a ball to powder ratio of 20:1 to obtain the SiC-Al composite powder; and 2, preparing a cast body: heating pure aluminum ingots to melt the pure aluminum ingots, degassing the molten pure aluminum ingots, removing slag from the degassed molten pure aluminum ingots, adding the ball-milled composite powder, stirring above materials, heating the obtained mixture to 700DEG C, and carrying out cast molding 20min later. The method for preparing high-performance composite powder by adopting a powder metallurgy technology avoids the problems of poor wettability of a reinforcement material and a matrix and poor dispersibility of ultrafine particles of traditional stirring dispersion methods by uniformly dispersing silicon carbide ultra-micro fine particles difficultly uniformly dispersed in aluminum melt in large aluminum particles, and is in favor of displaying the advantages of low cost and shape diversification of the prepared material of stirring casting methods.

Description

technical field [0001] The invention relates to the technical field of preparation of rare metal materials, in particular to a method for preparing SiCp / Al composite materials. Background technique [0002] Aluminum matrix composites reinforced with silicon carbide particles have excellent properties such as high specific strength, high specific stiffness, small thermal expansion coefficient, and good thermal conductivity, and can be processed twice with traditional processing equipment, and the preparation and processing costs are low. One of the materials with the most research and the widest potential application prospects, it has a development history of more than 30 years. At present, the main preparation processes of silicon carbide particle reinforcement include powder metallurgy, stirring casting, spray deposition, pressure infiltration and other processes. The distribution uniformity and interfacial bonding of the silicon carbide particle reinforcements of the comp...

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 Applications(China)
IPC IPC(8): C22C1/10C22C21/00C22C32/00
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM
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