A Method for Preparation of Ceramic Particle Reinforced Metal Matrix Composites by Microwave-Ultrasonic Coupling

A ceramic particle and ultrasonic coupling technology, which is applied in the field of microwave-ultrasonic coupling to prepare ceramic particle-reinforced metal matrix composites, can solve the problem that casting technology is difficult to realize the compounding of metals and particles with poor specific gravity, and powder metallurgy technology has a long molding cycle and cannot be upgraded. To the temperature required for the reaction and other issues, to achieve the effect of improving the interface binding mode, improving the interface binding mode, and reducing energy consumption

Active Publication Date: 2020-08-25
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation methods of traditional ceramic particle reinforced metal matrix composites mainly include powder metallurgy technology, casting technology and co-spray deposition technology, etc., but these industrial methods have some disadvantages, among which: powder metallurgy technology has a long molding cycle and high cost; casting technology It is difficult to achieve the compounding of metals and particles with a large difference in specific gravity; co-spray deposition technology equipment is expensive, high porosity, large loss of raw materials, etc.
Microwave is a good energy source for environmental protection. However, due to the microwave absorption and melting of metals, the conduction will shield the microwaves and cannot rise to the temperature required for the reaction. At present, there is no public report on the microwave preparation method of ceramic particle reinforced metal matrix composites

Method used

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  • A Method for Preparation of Ceramic Particle Reinforced Metal Matrix Composites by Microwave-Ultrasonic Coupling
  • A Method for Preparation of Ceramic Particle Reinforced Metal Matrix Composites by Microwave-Ultrasonic Coupling
  • A Method for Preparation of Ceramic Particle Reinforced Metal Matrix Composites by Microwave-Ultrasonic Coupling

Examples

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Embodiment 1

[0023] A method for preparing a zirconia-toughened alumina (ZTA) ceramic particle-reinforced high-chromium cast iron-based composite material by microwave-ultrasonic coupling, the specific steps are as follows:

[0024] (1) Mix ZTA particles with Cr23 high-chromium cast iron powder chips at a mass ratio of 1:1, and add silicone resin accounting for 6% of the total mass of ceramic particles and metal powder chips, mix evenly, and put them into a glass crucible, in which ZTA The particle size of the particles is 0.1~0.3mm, and the Cr23 high chromium cast iron chips are passed through a 48-mesh sieve before adding;

[0025] (2) Put the glass crucible in the microwave resonant cavity, heat it with 5KW microwave for 4 minutes to melt the metal powder, and turn on the ultrasonic device under the action of continuous microwave. The ultrasonic parameters are: the frequency of ultrasonic is 30kHz, and the intensity is 6W / cm 2 , ultrasonic 5min;

[0026] (3) Turn off the microwave, i...

Embodiment 2

[0029] Preparation of alumina (Al 2 o 3 ) and zirconia (ZrO 2 ) The method for ceramic particle reinforced high manganese steel matrix composite material, concrete steps are as follows:

[0030] (1) Alumina (Al 2 o 3 ) and zirconia (ZrO 2 ) particles are mixed according to the mass ratio of 1:1, the Al 2 o 3 and ZrO 2 Mixed ceramic particles and Mn13Cr2 high manganese steel chips are mixed at a mass ratio of 0.08:1, and epoxy resin accounting for 5% of the total mass of mixed ceramic particles and high manganese steel chips is added, mixed evenly, and put into a ceramic crucible, wherein Al 2 o 3 and ZrO 2 The particle size of the particles is 0.3~0.6mm, and the Mn13Cr2 high manganese steel chips are passed through a 48-mesh sieve before adding;

[0031] (2) Place the ceramic crucible in the microwave resonant cavity, heat it with 1KW microwave for 8 minutes to melt the metal powder, and turn on the ultrasonic device under the action of continuous microwave. The ultr...

Embodiment 3

[0034] Preparation of alumina (Al 2 o 3 ), zirconia (ZrO 2 ) and zirconia toughened alumina (ZTA) particles to reinforce the method for aluminum-silicon alloy-based composite materials, the specific steps are as follows:

[0035] (1) Alumina (Al 2 o 3 ), zirconia (ZrO 2 ) and zirconia toughened alumina (ZTA) particles are mixed according to the mass ratio of 1:1:1, the Al 2 o 3 , ZrO 2 Mix with ZTA mixed ceramic particles and A356 aluminum-silicon alloy powder chips at a mass ratio of 0.05:1, and add acrylic resin accounting for 4% of the total mass of the mixed ceramic particles and A356 aluminum-silicon alloy powder chips, mix evenly, and put it in a glass crucible. where Al 2 o 3 , ZrO 2 And the particle size of ZTA particles is 0.6~1mm, and the A356 aluminum-silicon alloy chips are passed through a 48-mesh sieve before adding;

[0036] (2) Put the glass crucible in the microwave resonant cavity, heat it with 10KW microwave for 1min to melt the metal shavings, an...

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Abstract

The invention discloses a method for preparing ceramic particle-reinforced metal-matrix composite materials by microwave-ultrasonic coupling. Ceramic particles, metal powder chips and organic binders are mixed and then microwave-melted, and the melted mixture is subjected to continuous microwave action. Put it in an ultrasonic field for ultrasonic treatment, and then inject the treated melt into the cavity for cooling and molding, which solves the problems of inconsistent heating, poor interface bonding ability, high energy consumption, and poor molding of ceramic particle reinforced metal matrix composites in the traditional process. Problems such as long period and uneven particle distribution, under high-power microwave radiation, ceramic particles and metal powder chips in ceramic particle reinforced metal matrix composites absorb microwaves at the same time, not only can use microwave thermal effect to achieve rapid and uniform volume heating of materials, The non-thermal effect of microwave can also be used to improve the interface bonding strength between particles and matrix to a certain extent. At the same time, ultrasonic can realize the uniform distribution of particles in the melt.

Description

technical field [0001] The invention belongs to the technical fields of microwave technology application and composite material preparation, and in particular relates to a method for preparing ceramic particle-reinforced metal-based composite materials through microwave-ultrasonic coupling. Background technique [0002] Particle-reinforced metal matrix composites have both the properties of metals (plasticity and toughness) and the advantages of ceramic particles (high strength, high stiffness), thus showing physical and mechanical properties different from those of matrix alloys, such as higher specific strength, Specific stiffness and better thermal stability, wear resistance and dimensional stability, etc. While having higher compression resistance, shear resistance and high temperature resistance than the base alloy, it also has designability that cannot be compared with traditional alloy materials. The preparation methods of traditional ceramic particle reinforced meta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10
CPCC22C1/1036C22C1/1047
Inventor 蒋业华隋育栋周谟金李祖来山泉
Owner KUNMING UNIV OF SCI & TECH
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