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Preparation method for silicon carbide particle reinforced aluminum-based composite material

A technology of silicon carbide particles and strengthening aluminum matrix, applied in the field of aluminum matrix composite materials, can solve the problems of poor wettability of SiC particles, and achieve the effects of improving poor wettability, simple and convenient process, and low energy consumption

Inactive Publication Date: 2016-04-06
周凡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention provides a method for preparing silicon carbide particle-reinforced aluminum-based composite materials. The present invention promotes the penetration of SiC particles in the synthesis products of the prior art, and improves the poor wettability of Al melt to SiC particles, etc. technical problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] (1) First prepare materials according to mass percentage: silicon carbide powder and particles accounting for 1% of the total mass of the two, potassium fluotitanate accounting for 99% of the total mass of the two, (or potassium fluozirconate, or fluoboric acid Potassium, or potassium fluorosilicate, or potassium fluorotantalate) and mix the above two powders evenly.

[0012] (2) Melt pure aluminum or aluminum alloy in the furnace, heat up to 660°C, add two mixed powder raw materials accounting for 100% of the weight of the aluminum melt into the furnace, fully stir the melt and keep it warm for 5 minutes, and remove the slag from the melt, The melt after fully stirring the melt is cast into various products.

Embodiment 2

[0014] (1) First prepare materials according to mass percentage: silicon carbide powder and particles accounting for 50% of the total mass of the two, potassium fluotitanate accounting for 50% of the total mass of the two, (or potassium fluozirconate, or fluoboric acid Potassium, or potassium fluorosilicate, or potassium fluorotantalate) and mix the above two powders evenly.

[0015] (2) Melt pure aluminum or aluminum alloy in the furnace, heat up to 900°C, add two mixed powder raw materials accounting for 50% of the weight of the aluminum melt into the furnace, fully stir the melt and keep it warm for 40 minutes, after removing slag from the melt, fully The melt after stirring the melt is cast into various products.

Embodiment 3

[0017] (1) First prepare materials according to mass percentage: silicon carbide powder and particles accounting for 99% of the total mass of the two, potassium fluotitanate accounting for 1% of the total mass of the two, (or potassium fluozirconate, or fluoboric acid Potassium, or potassium fluorosilicate, or potassium fluorotantalate) and mix the above two powders evenly.

[0018] (2) Melt pure aluminum or aluminum alloy in the furnace, and after heating up to 1000°C, add two mixed powder materials accounting for 1% of the weight of the aluminum melt into the furnace, fully stir the melt and keep it warm for 60 minutes, and then remove the slag from the melt, The melt after fully stirring the melt is cast into various products.

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Abstract

The invention discloses a preparation method for a silicon carbide particle reinforced aluminum-based composite material, and relates to the field of aluminum-based composite materials. The preparation method comprises the operating steps that 1, silicon carbide powder and particles and potassium fluotitanate, or potassium fluozirconate, or potassium fluoborate, or potassium fluosilicate or potassium fluotantalate serve as powder materials, and two kinds or several kinds of the powder materials are uniformly mixed; and 2, aluminum in a furnace is melted, after the aluminum is heated up to 660 DEGC-1500 DEG C, the mixed pulverized raw material is added into the furnace, melt is fully stirred, heat preserving is conducted, and after slagging-off is conducted on the melt, the fully stirred melt is casted into a variety of products. According to the preparation method for the silicon carbide particle reinforced aluminum-based composite material, the performance of the aluminum-based composite material is effectively improved, the process is simple, operating is convenient, the cost is low, and industrial production can be achieved.

Description

technical field [0001] The invention belongs to the field of aluminum-based composite materials, in particular to a preparation method of silicon carbide particle-reinforced aluminum-based composite materials. Background technique [0002] Obtaining sufficient heterogeneous particle reinforced aluminum matrix composites has potential application prospects due to a series of excellent properties such as low density, excellent casting performance, wear resistance, high specific strength, good thermal conductivity, electrical conductivity, small thermal expansion coefficient, etc. Compared with fiber-reinforced metal matrix composites, particle-reinforced metal matrix composites have the advantages of low cost, small anisotropy, and easy synthesis. When preparing composite materials containing SiC particles, due to the poor wettability between SiC particles and aluminum alloys, the preparation process requires high requirements. At present, there are mainly powder metallurg...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C32/00C22C1/02C22C1/10
CPCC22C21/00C22C1/026C22C1/1036C22C32/0047C22C32/0089
Inventor 周凡
Owner 周凡
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