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A preparation method of ceramic-aluminum composite material based on endogenous nanometer ticxny particles

An aluminum composite material and aluminum composite technology, which is applied in the field of ceramic particle preparation, can solve the problems of affecting the degree of mismatch between ceramic particles and melt, the inability to precisely control the amount, and the inability to control the C/N molar ratio, so as to improve the wettability. , the effect of reducing the degree of mismatch

Active Publication Date: 2020-05-22
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in this method, due to the N 2 Always in flow, unable to precisely control the N participating in the reaction 2 amount, thus unable to control the TiC x N y C / N molar ratio in
while TiC x N y The change of the C / N molar ratio will affect the TiC x N y The lattice parameters, which affect the mismatch between the ceramic particles and the melt

Method used

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  • A preparation method of ceramic-aluminum composite material based on endogenous nanometer ticxny particles
  • A preparation method of ceramic-aluminum composite material based on endogenous nanometer ticxny particles
  • A preparation method of ceramic-aluminum composite material based on endogenous nanometer ticxny particles

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preparation example Construction

[0039] The invention provides a method based on endogenous nano-TiC x N y The preparation method of the ceramic-aluminum composite material of particles is characterized in that it comprises the following steps:

[0040] Step 1, raw material aluminum powder, titanium powder, B 4 C, BN and carbon nanotubes are mixed into a mixed powder, and then compacted to make Al-Ti-B 4 Prefabricated blocks of C-BN-(CNTs);

[0041] Step 2, making the prefabricated block contain nano TiC through vacuum hot pressing sintering reaction x N y Ceramic particles (TiC x N y -AlN-TiB 2 ) / Al pottery-aluminum composite;

[0042] Step 3, the ceramic-aluminum compound is subjected to hot extrusion dispersion and plastic molding in sequence to obtain a nano-TiC based on endogenous x N y Particle ceramic aluminum composite material.

[0043] Described raw material composition and mass percent thereof are:

[0044] Al: 70wt.%; Ti: 19.60wt.%~20.70wt.%; B 4 C: 6.04wt.%~6.43wt.%; BN: 2.71wt.%~2.8...

Embodiment 1

[0117] In this embodiment, a ceramic-aluminum composite material based on endogenous nano-TiCxNy particles is prepared, which specifically includes:

[0118] Raw material powder ball mill activation pretreatment, details are as follows:

[0119] (1) Press B 4 The molar ratio of C and BN is 1:1, respectively weigh a certain amount of B with a purity ≥ 92.0wt.%. 4 C and BN powder with purity ≥ 99.0wt.% are ready for use.

[0120] (2) Put the BN powder into a ball mill tank, and use a planetary ball mill to conduct a high-speed ball mill activation treatment at a speed of 250 r / min for 2 hours. Add B to the mixed BN powder 4 C powder is also ball milled at a speed of 300r / min for 1.5h to obtain B 4 Mixed powder of C and BN.

[0121] Step 2, the homogenization of the reactant powder and the preparation of the reaction prefabricated block are as follows:

[0122] (1) Weigh Al powder, Ti powder, and B after ball milling activation treatment in a certain proportion 4 The mixed...

Embodiment 2

[0141] In this embodiment, a method of controlling endogenous nano-TiC in pottery-aluminum composite x N y The method for particle C / N ratio, comprising the following steps:

[0142] Raw material powder ball mill activation pretreatment, details are as follows:

[0143] (1) Press B 4 The molar ratio of C and BN is 1:1, respectively weigh a certain amount of B with a purity ≥ 92.0wt.%. 4 C and BN powder with purity ≥ 99.0wt.% are ready for use.

[0144] (2) Put the BN powder into a ball mill jar, and use a planetary ball mill to conduct a high-speed ball mill activation treatment of the BN powder at a speed of 200 r / min for 3 hours. Add B to the mixed BN powder 4 C powder is also ball milled at a speed of 200r / min for 3 hours to obtain B 4 Mixed powder of C and BN.

[0145] (3) Weigh a certain amount of carbon nanotubes, length: 20-100 μm, diameter: 10-20nm, purity ≥ 99.0wt.%, put it into a ball mill jar, and the ball mill performs ball milling and shearing treatment at ...

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Abstract

The invention discloses a preparation method of a pottery and aluminum composite based on endogenous nanometer TiCxNy granules. The preparation method comprises the following steps of step I, mixing raw materials of aluminum powder, titanium powder, B4C, BN and carbon nanotubes to obtain a mixed powder body, and then performing press compacting, so as to obtain precast blocks of Al-Ti-B4C-BN-(CNTs); step II, enabling the precast blocks to be subjected to vacuum hot pressing sintering reaction, so as to obtain a (TiCxNy-AlN-TiB2) / Al pottery and aluminum composite containing the nanometer TiCxNyceramic granules; and step III, sequentially performing hot extrusion dispersing and plastic shaping on the pottery aluminum composite, so as to obtain the pottery aluminum composite material based on the endogenous nanometer TiCxNy granules. According to the preparation method of the pottery and aluminum composite based on the endogenous nanometer TiCxNy granules provided by the invention, the addition quantity of the carbon nanotubes is adjusted and controlled, so that the carbon content in a system is changed, the C / N mole ratio in the TiCxNy ceramic granules can be controlled, and finally, the purpose of controlling the solidification structural and mechanical properties of the TiCxNy ceramic granule strengthening composite is achieved.

Description

technical field [0001] The invention relates to the field of preparation of ceramic particles, in particular to a method for preparing a ceramic-aluminum composite material based on endogenous nanometer TiCxNy particles. Background technique [0002] Research in recent years has found that carbonitride ceramics have incomparable advantages over ordinary carbides and nitrides. such as TiC x N y Ceramic: due to TiC x N y Combining the characteristics of TiC and TiN ceramics, so TiC x N y For the reinforcement phase has obvious advantages in strengthening aluminum and its alloys, with low mismatch degree, good interface bonding, etc., it brings good mechanical properties, such as high hardness, good toughness, high melting point, and good wear resistance and other characteristics, so TiC x N y It has important applications in materials such as high-speed cutting tools, wear-resistant and corrosion-resistant structural parts, and high-temperature resistant components. M...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05C22C1/10C22C21/00C22C32/00C22F1/04
CPCC22C1/0416C22C1/058C22C21/00C22C32/0047C22F1/04
Inventor 邱丰董柏欣杨宏宇姜启川
Owner JILIN UNIV