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Method for preparing nanometer SiC reinforced aluminum base composite material

A technology for strengthening aluminum-based and composite materials, applied in the field of metal materials, can solve the problems of insignificant slip and dislocation effects, difficulty in improving material density, and difficulty in gas discharge, reducing pressure and temperature conditions and reducing equipment. requirements, the effect of reducing porosity

Inactive Publication Date: 2008-11-12
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the slip and dislocation effects of the material are not obvious
The gas in the material is not easy to discharge, resulting in large porosity, and it is difficult to increase the density of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Preparation of SiC and Al Doped Volume Ratio 5%, 30nm SiC Reinforced Aluminum Matrix Composite

[0024] (1) Select 30nm SiC from Heilongjiang Zhongchao Nano Company with a purity of 99.9% and Shanghai Chemical Reagent 100-200 mesh Al with a purity of 99%. According to the mixture of 5% SiC and 95% Al, the Ar protection gas is introduced into the glove box.

[0025] (2) With the 2MZS-3 high-energy vibration ball mill produced by Wenzhou Xinkuang Powder Machinery Co., Ltd., the above-mentioned mixture was ball-milled for 20-30 hours.

[0026] (3) Take out the powder after ball milling, and carry out hot isostatic pressing treatment under the 769YP-15A powder tablet press and heating system of Tianjin Keqi High-tech Company, at a temperature of 200-250°C for 1-2 hours, and take it out by natural cooling.

[0027] (4) Use the TGR80 / 5000 vacuum hot-pressing furnace produced by Xi'an Xinhui Technology Industrial Co., Ltd. to vacuum hot-press in a high-temperature vacuum hot-...

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Abstract

The invention relates to a method for preparing for nanometer SiC reinforced aluminum composite material in the field of mental material technology. It uses silicon carbide and aluminum as raw material to prepare for the mixing material on the protection of Ar gas. The SiC content of the mixing material is 5%-30% (by volumn ratio). It uses high-energy vibration mill to mill the mixing material 20-30h and dose hot-isostatic-bonding process on the condition of pressure 600MP-800MP and the temperature 200-250 deg. for 1-2h and then cools it. It dose vacuum heat pressing on high temperature vacuum heat pressing oven with the heat pressing temperature 600-700 deg. and the pressure 30MP-40MP for 2h and then keeps the temperature for 0.5h.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and relates to metal matrix composite materials and nanomaterials, in particular to a method for preparing nano-SiC reinforced aluminum matrix composite materials Background technique [0002] In recent years, particle-reinforced aluminum matrix composites have been gradually recognized by the aerospace industry for their unique high specific strength, high specific modulus, wear resistance and high temperature resistance, and have begun to be applied on a large scale. At the same time, it is also widely used in the fields of pistons and brake systems of automobiles. [0003] ROY and Komamenis first proposed the concept of nanocomposites (nanocomposites) in 1984, that is, composites composed of two or more Gibbs solid phases in at least one direction at the nanoscale (1-100nm). Material. [0004] Metal-based nanocomposites are made of nano-scale metal or non-metallic particles uniformly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/04B22F9/04B22F3/12C22C21/00
Inventor 罗劲松
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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