Preparation method of ceramic reinforced metal-based composite material

A composite material and metal-based technology, used in heat exchange equipment, stators, pistons, etc., can solve the problems of low bonding strength between ceramic particles and metal interfaces, low volume fraction of ceramic reinforced phases, etc. The effect of easy availability of resources

Inactive Publication Date: 2014-10-01
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of ceramic reinforced metal matrix composites, which solves the problems of low bonding strength between ceramic particles and metal interface and low volume fraction of ceramic reinforced phase

Method used

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Examples

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Effect test

preparation example Construction

[0022] A preparation method of a ceramic reinforced metal matrix composite material of the present invention specifically comprises the following steps:

[0023] Step 1: Add water and additives to the zirconium corundum powder with a particle size of 25-48 μm. The mass ratio of zirconium corundum powder: additive: water is 1: (0.02-0.15): (3-4), and the additive is bonding The mixture of binder, rheological agent, defoamer and surfactant, the mass ratio of binder, rheological agent, defoamer and surfactant is 1:(0.17~0.5):(0.1~0.3):( 0.02~0.18), wherein the binder is aluminum hydroxide gel, the rheological agent is carboxymethyl cellulose, the defoamer is polydimethylsiloxane, and the surfactant is stearic acid, fully mixed and stirred Uniformly make ceramic slurry; and add organic foam beads and ceramic slurry to mix evenly, the volume ratio of organic foam beads and ceramic slurry is 1: (0.11~0.42), and the particle size of organic foam beads is 1-3mm The polyurethane beads...

Embodiment 1

[0039] Step 1: Weigh 100 g of zirconium corundum powder with a particle size of 25 μm, add 300 g of water and 2 g of additives, the additives are aluminum hydroxide gel, carboxymethyl cellulose, poly The mixture of dimethylsiloxane and stearic acid is fully mixed and stirred evenly to make a ceramic slurry; and organic foam beads with a volume ratio of 1:0.11 are added to mix evenly with the ceramic slurry, and the organic foam beads are granules. Polyurethane beads with a diameter of 2 mm are poured into the mold cavity to obtain a ceramic foam precursor that is the same shape as the part but slightly smaller than the part, and dried at room temperature for 24 hours to obtain a ceramic foam precursor;

[0040] Step 2: Sinter the foamed ceramic precursor obtained in step 1 to remove the organic foam beads. After the organic foam beads are discharged, continue to heat up to 1100 ° C for 3 hours to improve its strength. The heating rate before heating to 600 ° C is 5 ° C / min, t...

Embodiment 2

[0044] Step 1: Weigh 100 g of zirconium corundum powder with a particle size of 36 μm, add 350 g of water and 8 g of additives, the additives are aluminum hydroxide gel, carboxymethyl cellulose, poly The mixture of dimethylsiloxane and stearic acid is fully mixed and stirred evenly to make a ceramic slurry; and organic foam beads with a volume ratio of 1:0.3 are added to mix evenly with the ceramic slurry, and the organic foam beads are granules. Polyurethane beads with a diameter of 1mm were poured into the mold cavity to obtain a ceramic foam precursor with the same shape as the part but slightly smaller than the part, and dried at room temperature for 36 hours to obtain a ceramic foam precursor;

[0045] Step 2: Sinter the foamed ceramic precursor obtained in step 1 to remove the organic foam beads. After the organic foam beads are discharged, continue to heat up to 1200°C for 2.5 hours to improve its strength. The heating rate before the temperature rises to 600°C is 3 °C / ...

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Abstract

The invention discloses a preparation method of a ceramic reinforced metal-based composite material. The method comprises the following steps: mixing fused alumina zirconia powder, water and an additive to prepare ceramic size; adding organic foam beads to uniformly mix with the ceramic size; pouring into a die cavity; drying to obtain a foamed ceramics precursor; sintering the foamed ceramic precursor to remove organic foam beads; plating nickel on the surface; transferring to cast; pouring liquid metal; cooling and solidifying; and then thermally processing to obtain the ceramic reinforced metal-based composite material. With the adoption of the preparation method of the ceramic reinforced metal-based composite material, the problems of low combining intensity of the ceramic particles and a metal interface and small volume fraction of ceramic reinforcing phase are solved; the content of the ceramic reinforcing phase reaches 10 to 40%; the preparation speed is fast; the substrate material resource is rich and easy to be obtained, and thus the cost is obviously decreased; in addition, the composite material preparation process and device are simple, the cost is small, and industrial production and popularization and application can be performed conveniently.

Description

technical field [0001] The invention belongs to the technical field of metal-matrix composite material preparation, and in particular relates to a preparation method of ceramic-reinforced metal-matrix composite material. Background technique [0002] With the continuous expansion of the application range of composite materials and the development trend of increasing the content of the reinforcing phase, a new type of composite material has emerged, that is, the network structure reinforced composite material, whose comprehensive strengthening effect is usually better than the traditional continuous long fiber, whisker / The strengthening effect of short fibers and particles as a reinforcing phase provides a new way to obtain high-performance and multifunctional composite materials. The introduction of network structure reinforcement phase in metal matrix composites can expand the selection range of reinforcements, so that it is no longer limited to particles, whiskers and fib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C32/00B22D19/00
Inventor 屈银虎蒙青
Owner XI'AN POLYTECHNIC UNIVERSITY
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