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Ti(CxN1-x)/Al2O3 composite material and preparation method thereof

A composite material, al2o3 technology, applied in the field of material science, can solve the problems of high production cost, coarse grain of composite material, limited mechanical properties, etc., and achieve the effect of broadening the preparation method and application range, low firing temperature and uniform structure

Active Publication Date: 2013-01-23
PHENOM INNOVATIONS XIAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this method requires high temperature and high pressure, the production cost is relatively high. At the same time, due to the relatively coarse primary particles, the formed Ti(C x N 1-x ) / Al 2 o 3 The grains of the composite material are also relatively coarse, which greatly limits its mechanical properties, thus limiting the application of the material

Method used

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  • Ti(CxN1-x)/Al2O3 composite material and preparation method thereof
  • Ti(CxN1-x)/Al2O3 composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A Ti(C x N 1-x ) / Al 2 o 3 Composite material, its raw material weight composition is: 120 mesh Al powder accounts for 29.52% of total weight, 1200 mesh C powder accounts for 4.93% and 325 mesh TiO 2 Accounted for 65.55%.

[0019] The preparation method of the present embodiment comprises the following steps:

[0020] 1. First, 29.52% of 120-mesh Al powder, 4.93% of 1200-mesh C powder and 65.55% of 325-mesh TiO 2 mix well;

[0021] Two, add the sodium stearate dispersant of mixture quality 1% in the mixture, carry out high-energy ball milling under nitrogen protection, the rotating speed of ball mill is 750 revs per minute, and material ball mass ratio is 1: 10, ball mills 20 hours, forms main The crystal phase is Ti(C x N 1-x ), Al 2 o 3 and TiAlON fine composite powder;

[0022] 3. Vacuum dry the powder after ball milling in step 2 at 75°C for 5 hours;

[0023] 4. Put the dried powder into a graphite grinding tool, and sinter it under argon at 1300°C and a ...

Embodiment 2

[0026] A Ti(C x N 1-x ) / Al 2 o 3 Composite material, its raw material weight composition is: 100 mesh Al powder accounts for 31.05% of total weight and 325 mesh TiO 2 Accounted for 68.95%.

[0027] The preparation method of the present embodiment comprises the following steps:

[0028] 1. Firstly mix 31.05% 100 mesh Al powder and 68.95% 325 mesh TiO by mass percentage 2 mix well;

[0029] Two, add the sodium stearate dispersant of mixture quality 1% in the mixture, carry out high-energy ball milling under nitrogen protection, the rotating speed of ball mill is 800 revs per minute, and material ball mass ratio is 1: 10, ball mills 24 hours, forms main The crystal phase is Ti(C x N 1-x ), Al 2 o 3 and TiAlON fine composite powder;

[0030] 3. Vacuum dry the powder after ball milling in step 2 at 80°C for 4 hours;

[0031] 4. Put the dried powder into a graphite abrasive tool and sinter under vacuum at 1350°C and 20MPa pressure for 1 hour to obtain Ti(C x N 1-x ) / Al...

Embodiment 3

[0034] A Ti(C x N 1-x ) / Al 2 o 3 Composite material, its raw material weight composition is: 150 mesh Al powder accounts for 30.11% of total weight, 1200 mesh C powder accounts for 3.02% and 325 mesh TiO 2 Accounting for 66.87%.

[0035] The preparation method of the present embodiment comprises the following steps:

[0036] 1. First, 30.12% 150-mesh Al powder, 3.02% 1200-mesh C powder and 66.87% 325-mesh TiO 2 mix well;

[0037] Two, add the sodium stearate dispersant of mixture quality 0.6% in the mixture, carry out high-energy ball milling under nitrogen protection, the rotating speed of ball mill is 780 revs per minute, and material ball mass ratio is 1: 10, ball mills 18 hours, forms main The crystal phase is Ti(C x N 1-x ), Al 2 o 3 and TiAlON fine composite powder;

[0038] 3. Vacuum dry the powder after ball milling in step 2 at 80°C for 4 hours;

[0039] 4. Put the dried powder into a graphite grinding tool, and heat press and sinter at 1320°C and 15MPa un...

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Abstract

The invention discloses a Ti(CxN1-x) / Al2O3 composite material and a preparation method thereof. The preparation method comprises: fully mixing Al powder accounting for 28.14 to 31.05 percent of the total weight of the composite, C powder accounting for 0 to 9.39 percent of the total weight of the composite and TiO2 accounting for 62.47 to 68.95 percent of the total weight of the composite; addinga sodium stearate dispersant accounting for 0.5 to 1 percent of the total mass into the mixture to pre-synthesize Ti(CxN1-x) / Al2O3 / TiAlON composite powder by high-power ball milling process in an atmosphere of nitrogen; and generating the Ti(CxN1-x) / Al2O3 composite material in situ at a low temperature by a hot pressed sintering process under a vacuum or argon atmosphere condition. The method reduces the preparation temperature of the material, improves the performance of the material and greatly reduces the manufacturing cost of the material.

Description

technical field [0001] The invention belongs to the field of material science, in particular to a Ti(C x N 1-x ) / Al 2 o 3 Composite materials and methods for their preparation. Background technique [0002] TiC / Al 2 o 3 and TiN / Al 2 o 3 Composite materials have been widely used because of their excellent mechanical properties, and they have long been regarded as excellent materials of choice for cutting tools. With the continuous development of science and technology, the requirements for the performance of materials are getting higher and higher. Compared with traditional TiC and TiN materials, Ti(C x N 1-x ) has higher mechanical properties and a smaller friction coefficient, so its research and application in tool materials has attracted more and more attention. At present, the basic method of synthesizing this material is to combine TiC, TiN and Al 2 o 3 After mixing, carry out hot isostatic pressing or hot pressing sintering, and form Ti(C x N 1-x ) / Al 2 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/515C04B35/645C04B35/65
Inventor 朱建锋林营王芬杨海波马晓伟齐国权
Owner PHENOM INNOVATIONS XIAN CO LTD