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A kind of in-situ nano-tic ceramic particle reinforced aluminum matrix composite material and preparation method thereof

A technology of ceramic particles and composite materials, which is applied in the application field of new particle-reinforced metal matrix composite materials, to achieve the effect of pure surface, less impurity content and high bonding strength

Active Publication Date: 2011-11-30
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there is no report in the world about the preparation of in-situ nano-TiC ceramic particles reinforced pure aluminum or aluminum alloy matrix composites by using combustion synthesis chemical reaction method and hot pressing technology.

Method used

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  • A kind of in-situ nano-tic ceramic particle reinforced aluminum matrix composite material and preparation method thereof
  • A kind of in-situ nano-tic ceramic particle reinforced aluminum matrix composite material and preparation method thereof
  • A kind of in-situ nano-tic ceramic particle reinforced aluminum matrix composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The aluminum matrix composite material reinforced with nano-TiC ceramic particles is prepared according to the weight percentage composition of TiC28 and Al72.

[0035] Take Al powder, Ti powder, and carbon nanotube ingredients. Wherein, the ratio of Al powder, Ti powder and carbon nanotube is 72:22.4:5.6 by weight. The prepared powder is mixed in a roller ball mill for 6-8 hours, and then the mixed powder is hand-mixed in a mortar for 15-20 minutes to make the powder evenly mixed. Take the properly mixed powder and put it into a mold, and press it at room temperature to form a cylindrical reaction prefabricated block with a diameter of 28±0.5 mm and a height of 40-50 mm. The density of the prefabricated block is 70±5.0 of the theoretical density of the mixed powder. %. Put the prefabricated block into the graphite mold, and then put a high-strength graphite pressure rod on the upper part of the prefabricated block. Put the graphite mold with the prefabricated block ...

Embodiment 2

[0037] The aluminum matrix composite material reinforced by nano-TiC ceramic particles is prepared according to the weight percentage composition of TiC24 and Al76.

[0038] Take Al powder, Ti powder, and carbon nanotube ingredients. Wherein, the ratio of Al powder, Ti powder and carbon nanotube is 76:19.2:4.8 by weight. Its preparation method is with embodiment 1. X-ray results showed that the product was pure, while field emission results showed that the TiC particles formed therein were about 70 nm in size.

Embodiment 3

[0040] The nano-TiC ceramic particle reinforced aluminum matrix composite material composed of TiC20 and Al80 by weight percentage is prepared.

[0041] Take Al powder, Ti powder, and carbon nanotube ingredients. Wherein, the ratio of Al powder, Ti powder and carbon nanotube is 80:16:4 by weight. Its preparation method is with embodiment 1. X-ray results showed that the product was pure, while field emission results showed that the TiC particles formed therein were about 50 nm in size.

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Abstract

The invention relates to an in situ nano TiC ceramic particle reinforced aluminum based composite material and a preparation method thereof. According to the invention, an in situ nano TiC ceramic particle reinforced aluminum or aluminum alloy based composite material is prepared by using a combustion synthesis chemical reaction method and a hot-press technology; and the size of the TiC ceramic particle synthesized by an in situ reaction is below 100 nm, and the weight percentage content of the TiC ceramic particle is 3-30. The preparation method comprises the following steps: 1) mixing reactant powder materials in a certain proportion and then making blanks; 2) evenly mixing in a drum-type ball mill and a triturator in turn; 3) pressing at the room temperature so as to form reaction prefabricated blocks; and 4) putting a graphite mould with the prefabricated blocks in a vacuum / atmosphere protected combustion reaction furnace with a hydraulic device and then initiating a combustion reaction, immediately applying an axial pressure of 40+ / -5 MPa to the prefabricated blocks once the combustion reaction occurs, and cooling the prefabricated blocks to room temperature along with the furnace after keeping the pressure for 30-40 seconds, so as to synthesize the nano TiC ceramic particle reinforced pure aluminum or aluminum alloy based composite material.

Description

technical field [0001] The invention belongs to the application field of novel particle-reinforced metal-based composite materials, and in particular relates to a new preparation method of in-situ nano-TiC ceramic particle-reinforced aluminum or aluminum alloy-based composite materials. That is, the weight percentage content of nano TiC particles in the reinforcing phase is 3-30, the weight percentage content of the matrix pure aluminum or aluminum alloy is 97-70, and the aluminum alloy is Al-3~6Cu, Al-5~13Si or Al-1.0~5.5 Mg. Background technique [0002] With the rapid and sustainable development of my country's aerospace, national defense, industry and other fields, the requirements for the comprehensive performance of materials are getting higher and higher. Because ceramic-metal matrix composites can effectively combine the good thermal conductivity, electrical conductivity and good plasticity of metals with the high temperature resistance, wear resistance and corrosio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C32/00C22C21/00C22C1/05
Inventor 姜启川靳慎豹沈平王慧远周东帅
Owner JILIN UNIV
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