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Ti3AlC2/Al2O3 compound material and preparation method thereof

A composite material and composite powder technology, applied in the field of material science, can solve the problems of inability to carry out large-scale industrial production, influence of material performance, high synthesis temperature, etc., and achieve the effect of low cost, uniform and dense structure, and low firing temperature

Active Publication Date: 2013-05-08
PHENOM INNOVATIONS XIAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the composite material mainly uses Al 2 o 3 and Ti 3 AlC 2 Two kinds of powders are mixed for sintering, or Al, C, TiO 2 Ti is generated by reduction reaction at high temperature as raw material 3 AlC 2 / Al 2 o 3 Composite materials, but there are disadvantages such as high reaction synthesis temperature, and more or less other impurities in the final product, which have a certain impact on the performance of the material, and cannot be used for large-scale industrial production

Method used

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  • Ti3AlC2/Al2O3 compound material and preparation method thereof
  • Ti3AlC2/Al2O3 compound material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0019] A kind of Ti 3 AlC 2 / Al 2 o 3 Composite material, its raw material weight composition is: 250 purpose Ti powder accounts for 66.25% of total weight, 200 purpose Al powder accounts for 15.91%, 1200 purpose C powder accounts for 11.70% and 325 purpose TiO 2 Accounted for 6.14%.

[0020] The preparation method of the present embodiment comprises the following steps:

[0021] 1. 66.25% of the total weight of 325 mesh Ti powder, 15.91% of 200 mesh Al powder, 11.70% of 1200 mesh C powder, 6.14% of 325 mesh TiO 2 mix well;

[0022] Two, add the sodium stearate dispersant of mixture quality 1.0% in the mixture, adopt high-energy ball mill, the rotating speed of planetary ball mill is 750 revs per minute, and material ball mass ratio is 1: 10, ball mills 20 hours, forms main crystal phase TiC, Al 2 o 3 and TiAlO fine composite powder;

[0023] 3. Dry the composite powder ball-milled in step 2 in vacuum at 75°C for 5 hours;

[0024] 4. Put the dried powder into a graph...

Embodiment 2

[0027] A kind of Ti 3 AlC 2 / Al 2 o 3 Composite material, its raw material weight composition is: 270 mesh Ti powder accounts for 70.89% of total weight, 170 mesh Al powder accounts for 14.65%, 1200 mesh C powder accounts for 12.09% and 460 mesh TiO 2 Accounted for 2.37%.

[0028] The preparation method of the present embodiment comprises the following steps:

[0029] 1. 70.89% of the total weight of 270-mesh Ti powder, 14.65% of 170-mesh Al powder, 12.09% of 1200-mesh C powder, 2.37% of 460-mesh TiO 2 mix well;

[0030] Two, add the sodium stearate dispersant of mixture quality 1.0% in the mixture, adopt high-energy ball mill, the rotating speed of planetary ball mill is 800 revs per minute, and material ball mass ratio is 1: 10, ball mills 24 hours, forms main crystal phase TiC, Al 2 o 3 and TiAlO composite powder;

[0031] 3. Dry the composite powder ball-milled in step 2 in vacuum at 80°C for 4 hours;

[0032]4) Put the dried powder into a graphite grinding tool,...

Embodiment 3

[0035] A kind of Ti 3 AlC 2 / Al 2 o 3 Composite material, its raw material weight composition is: 325 mesh Ti powder accounts for 58.75% of total weight, 100 mesh Al powder accounts for 17.94%, 1200 mesh C powder accounts for 11.06% and 325 mesh TiO 2 12.25%.

[0036] The preparation method of the present embodiment comprises the following steps:

[0037] 1. The 325-mesh Ti powder, 17.94% of the 100-mesh Al powder, 11.06% of the 1200-mesh C powder and 12.25% of the 325-mesh TiO 2 mix well;

[0038] Two, add the sodium stearate dispersant of mixture quality 0.6% in the mixture, adopt high-energy ball mill, the rotating speed of planetary ball mill is 780 revs per minute, and material ball mass ratio is 1: 10, and ball mills 18 hours, forms main crystal phase TiC, Al 2 o 3 and TiAlO composite powder;

[0039] 3. Dry the composite powder ball-milled in step 2 in vacuum at 80°C for 4 hours;

[0040] 4. Put the dried powder into a graphite grinding tool, and sinter it und...

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Abstract

The invention discloses a Ti3AlC2 / Al2O3 compound material and a preparation method thereof. The preparation method comprises the following steps: based on 100 percent of compound materials, sufficiently mixing 0 to 70.89 percent of Ti powder, 33.85 to 14.65 percent of Al powder, 6.03 to 12.09 percent of C powder and 60.12 to 2.37 percent of TiO2; and adding 0.5 to 1 percent of sodium stearate dispersant to the mixture to prepare a high-purity Ti3AlC2 / Al2O3 compound material at a low temperature by high-energy ball milling and a reaction sintering process. The material has the characteristics of low impurity content and higher purity; and the method has the characteristics of simple process, low cost and easy large-scale production.

Description

technical field [0001] The invention belongs to the field of material science, in particular to a Ti 3 AlC 2 / Al 2 o 3 Composite materials and methods for their preparation. Background technique [0002] Ti 3 AlC 2 It belongs to the hexagonal crystal system, has low hardness (Vickers hardness is about 3.5GPa), low density, good electrical and thermal conductivity, excellent thermal shock resistance, high Young's modulus (297GPa) and shear modulus (124GPa) and other characteristics, it is a conductive ceramic material with the advantages of ceramics and metals; while alumina Al 2 o 3 Ceramics have the advantages of high hardness, high temperature resistance, corrosion resistance and wear resistance. Therefore, the composite material Ti of the two 3 AlC 2 / Al 2 o 3 Combining the advantages of both, this brings hope to the functionalization (conduction, heat conduction, easy processing, etc.) of structural materials represented by alumina. Therefore, the research an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/56C04B35/10C04B35/622
Inventor 朱建锋杨海波周勇王芬林营马晓伟齐国权
Owner PHENOM INNOVATIONS XIAN CO LTD
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