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In-situ nano TiC ceramic particle reinforced iron matrix composite material and preparation method thereof

A technology of ceramic particles and composite materials, which is applied in the field of preparation of in-situ nano-TiC ceramic particles reinforced iron or iron alloy-based composite materials, to achieve the effect of pure surface, less impurity content and high bonding strength

Active Publication Date: 2013-01-09
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 on the preparation of in-situ nano-TiC ceramic particles reinforced iron or iron alloy matrix composites by using combustion synthesis chemical reaction method and hot pressing technology in the world.

Method used

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  • In-situ nano TiC ceramic particle reinforced iron matrix composite material and preparation method thereof
  • In-situ nano TiC ceramic particle reinforced iron matrix composite material and preparation method thereof
  • In-situ nano TiC ceramic particle reinforced iron matrix composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The iron-based composite material reinforced with nano-TiC ceramic particles is prepared according to the weight percentage composition of TiC18 and Fe82.

[0033] Get Fe powder, Ti powder, carbon nanotube batching. Wherein, the ratio of Fe powder, Ti powder and carbon nanotube is 82:14.4:3.6 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 into a vacuum...

Embodiment 2

[0035] A nano-TiC ceramic particle reinforced iron-based composite material composed of TiC15 and Fe85 by weight percentage was prepared.

[0036] Get Fe powder, Ti powder and carbon nanotube batching. Wherein, the proportion of Fe powder, Ti powder and carbon nanotube is 85:12:3 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

[0038] A nano-TiC ceramic particle-reinforced iron alloy matrix composite material composed of TiC12, Fe-12Cr-1Mo-1V-1.0C alloy matrix 88 by weight percentage is prepared.

[0039] Get Fe powder, Ti powder, Cr powder, Mo powder, V powder and carbon nanotube batching. Wherein, the ratio of Fe powder, Cr powder, Mo powder, V powder, Ti powder and carbon nanotube is 74.8:10.56:0.88:0.88:9.6:3.28 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 65 nm in size.

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Abstract

The invention relates to an in-situ nano TiC ceramic particle reinforced iron matrix composite material and a preparation method thereof. In the method, an in-situ nano TiC ceramic particle reinforced iron or ferroalloy matrix composite material is prepared by adopting a combustion synthesis chemical reaction method and a hot pressing technology, and the size of the TiC ceramic particle which is synthesized by an in-situ reaction is smaller than 100 nanometers, and the content of the TiC ceramic particle is between 5-20wt%. The preparation method comprises the following steps: mixing powderedmaterials of reactants to prepare a blank; uniformly mixing in a drum type ball grinder and a mortar sequentially; pressing a reaction prefabricated block at room temperature; putting a graphite mould filled with the prefabricated block in a combustion reacting furnace to trigger a combustion reaction; and applying axial pressure to the prefabricated block, preserving the pressure, and cooling the prefabricated block along with the furnace to room temperature so as to synthesize the nano TiC ceramic particle reinforced pure iron or ferroalloy matrix composite material. The nano TiC ceramic particle reinforced iron matrix composite material has the characteristics that the nano TiC is generated in situ; the surface of the ceramic particle is pure and clean, and has high bonding strength with the interface of a matrix; and the nano TiC ceramic particles are distributed uniformly in the matrix, and the like.

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 preparation method of a new in-situ nano-TiC ceramic particle-reinforced iron or iron-alloy-based composite material. Background technique [0002] With the rapid and sustainable development of my country's machinery, metallurgy 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 corrosion resistance of ceramics, they have received extensive attention. Generally speaking, the smaller the size of the ceramic particles used as the reinforcing phase, the better the reinforcing effect. Therefore, the preparation of ceramic particle-reinforced metal matrix...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/28C22C33/02
Inventor 姜启川靳慎豹沈平王慧远周东帅
Owner JILIN UNIV