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Method and apapratus for preparing network ceramic skeleton reinforced metal-base composite material

A technology of ceramic skeleton and composite material, which is applied in the field of composite material preparation, can solve the problems of difficult distribution of ceramic phase uniformly, non-wettability of ceramic and metal, low interface bonding strength, etc., and achieves dimensional stability and low production cost. , good wetting effect

Inactive Publication Date: 2007-05-02
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, ceramic phase / metal matrix composites have the advantages of both, and are a promising new class of materials. The content generally does not exceed 8%. It is difficult to distribute a large amount of ceramic phases evenly in the metal matrix by stirring and adding. The preparation process is complicated and the material properties are also adversely affected.

Method used

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  • Method and apapratus for preparing network ceramic skeleton reinforced metal-base composite material
  • Method and apapratus for preparing network ceramic skeleton reinforced metal-base composite material
  • Method and apapratus for preparing network ceramic skeleton reinforced metal-base composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Example 1: Si 3 N 4 Preparation of Al / Al composites

[0038] The preparation device of this embodiment is shown in Figures 1-3. The device is composed of a pressurization system 11, a negative pressure system 13, a heating system 12, an impregnation system and a control system.

[0039] Pressurization system: It consists of pressure head, oil cylinder, remote pressure regulating valve, pressure gauge, and oil circuit system, which can realize the pressure of 0-60MPa according to different needs.

[0040] Negative pressure system: composed of motor, vacuum pump, pressure gauge, vacuum chamber and air circuit, can provide 0-10 -2 Negative pressure of Pa.

[0041] Heating system: It is composed of heating elements, heat preservation parts and insulation parts.

[0042] Impregnation system: It consists of screw hole 1, water cooling system 2, upper end cover 3, mold 4, insulating refractory layer 5, heating body 6, insulation layer 7, and lower end cover 8. The inner ...

Embodiment 2

[0049] Example 2: Si 3 N 4 Preparation of / Mg composites

[0050] The device is basically the same as in Example 1.

[0051] Its preparation method is:

[0052] Si 3 N 4 Preparation of ceramic structure reinforced skeleton: using the same production process as in Example 1 to prepare Si 3 N 4 skeleton.

[0053] Magnesium liquid impregnation process: Take 300 grams of pure magnesium, add 3 grams of 3% Be~Al intermediate alloy, put it into a steel crucible, heat and melt it in a well-type resistance furnace (SG-3-10) to 750 ° C, and heat up The speed is 250°C / hour, and the temperature is kept for 30 minutes. Brush the inner wall of the mold with paint (40% chrysanthemum white powder + 20% graphite + 40% water), dry it, put the prefabricated ceramic body into the mold, add open-hole asbestos pads and copper mesh at the bottom, fix it, and heat up to 750°C, keep warm for 30 minutes, pour the molten magnesium slag smelted at 750°C into the infiltration molding mold, and at...

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Abstract

The present invention relates to a preparation method of network structure ceramic skeleton reinforced metal base composite material and its equipment. Said preparation method includes the following steps: selecting and using a certain quantity of ceramic powder material and adjuvant, ball-grinding and uniformly mixing them, and mixing them with 50-80wt% of adhesive to obtain a slurry material; using reticular sponge with through hole as precursor body, dipping in the slurry; sintering and solidifying said sponge dipped in slurry; and pouring molten metal. Said invented equipment includes pressure system, negative pressure system, heating system, impregnation system and control system.

Description

1. Technical field [0001] The invention relates to a preparation method of a ceramic-reinforced metal-matrix composite material, in particular to a preparation method and a device thereof for a network-structured ceramic skeleton-reinforced metal-matrix composite material. 2. Background technology [0002] The reinforcement methods of metal matrix composites include particles, whiskers, and fiber reinforcements. The addition methods of ceramic particle reinforcement mainly include stirring and adding methods and in-situ self-generation methods. Ceramics have high hardness and brittleness, and small linear expansion coefficient, while metals have high plasticity, toughness, thermal conductivity and electrical conductivity. Therefore, ceramic phase / metal matrix composites have the advantages of both, and are a promising new class of materials. The content is generally not more than 8%. It is difficult to distribute a large amount of ceramic phases evenly in the metal matrix b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/02
Inventor 耿浩然王守仁崔峰杜硕
Owner UNIV OF JINAN
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