Light high-strength boron carbide particle reinforced aluminum-based composite material and preparation method thereof

A particle-reinforced aluminum and composite material technology, which is applied in the field of casting metal matrix composite materials, can solve the problems of cumbersome powder metallurgy operation, difficulty in large-scale mold size, and high cost

Inactive Publication Date: 2021-04-20
深圳优越科技新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the powder metallurgy method is cumbersome to operate, it is difficult to enlarge the mold size, the cost is high, and it is difficult to realize large-scale and industrialized production

Method used

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  • Light high-strength boron carbide particle reinforced aluminum-based composite material and preparation method thereof
  • Light high-strength boron carbide particle reinforced aluminum-based composite material and preparation method thereof
  • Light high-strength boron carbide particle reinforced aluminum-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 according to figure 1 Prepared by the process shown, the composition of the composite material is 8 to 30% of boron carbide particles and 70 to 92% of the aluminum alloy matrix. The boron carbide particles used in Example 1 account for 12%, and the aluminum alloy matrix accounts for 88%. Copper plating is carried out on the particle surface, and copper plating includes sensitization, activation and electroless plating. Specific steps are as follows:

[0035] Sensitization treatment: put 1.2kg of boron carbide particles into 20L of SnCl 2 (30g / L) solution, stirred with a magnetic stirrer for 10min, poured off the supernatant after standing for a period of time, and washed with deionized water until neutral;

[0036] Activation treatment: Put the sensitized boron carbide particles into 20L of PdCl 2 (0.25g / L) solution, stirred with a magnetic stirrer for 10min, poured off the supernatant after standing for a period of time, and washed with deionized water unt...

Embodiment 2

[0047] Example 2 according to figure 1 In the preparation process shown, the boron carbide particles account for 8% by mass percentage, and the aluminum alloy matrix accounts for 92%. The specific steps are as follows:

[0048] Sensitization treatment: put 0.8kg boron carbide particles into 14L SnCl 2 (30g / L) solution, stirred with a magnetic stirrer for 10min, poured off the supernatant after standing for a period of time, and washed with deionized water until neutral;

[0049] Activation treatment: Put the sensitized boron carbide particles into 14L PdCl 2(0.25g / L) solution, stirred with a magnetic stirrer for 10min, poured off the supernatant after standing for a period of time, and washed with deionized water until neutral;

[0050] Electroless plating treatment: using the method of stirring and immersion plating, put the sensitized and activated boron carbide particles into a 14L copper plating solution, the pH value of the plating solution is 12.0, the temperature is 4...

Embodiment 3

[0057] Example 3 according to figure 1 According to the process shown in the preparation, the boron carbide particles account for 18% by mass percentage, and the aluminum alloy matrix accounts for 82%. The specific steps are as follows:

[0058] Sensitization treatment: put 1.8kg boron carbide particles into 30L SnCl 2 (30g / L) solution, stirred with a magnetic stirrer for 10min, poured off the supernatant after standing for a period of time, and washed with deionized water until neutral;

[0059] Activation treatment: Put the sensitized boron carbide particles into 30L of PdCl 2 (0.25g / L) solution, stirred with a magnetic stirrer for 10min, poured off the supernatant after standing for a period of time, and washed with deionized water until neutral;

[0060] Electroless plating treatment: using the method of stirring and immersion plating, put the sensitized and activated boron carbide particles into a 30L copper plating solution, the pH value of the plating solution is 12.6...

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Abstract

The invention discloses a light high-strength boron carbide particle reinforced aluminum-based composite material and a preparation method thereof. The light high-strength boron carbide particle reinforced aluminum-based composite material is prepared from the following components in percentage by mass: 8-30% of boron carbide (B4C) particles and 70-92% of an aluminum alloy matrix. The preparation method comprises the steps that copper plating treatment is carried out on the surfaces of the boron carbide particles; the solid aluminum alloy matrix is molten; the treated boron carbide particles are added into the molten aluminum alloy matrix, and are mechanically stirred to uniformly disperse the particles; and the composite material is obtained through casting, hot extrusion and heat treatment. The surfaces of the boron carbide particles are subjected to copper plating treatment, interface reaction is regulated and controlled, the boron carbide particles are prevented from being directly in contact with molten aluminum alloy to be corroded, the composite material is obtained through a stirring casting method, the obtained material is excellent in performance, the preparation method is simple, the cost is low, and industrial production can be achieved.

Description

technical field [0001] The invention relates to the field of casting metal-based composite materials, in particular to a lightweight and high-strength boron carbide particle-reinforced aluminum-based composite material and a preparation method thereof. Background technique [0002] Ceramic particle reinforced aluminum matrix composites have the advantages of high specific strength, high specific stiffness, high elastic modulus, excellent wear resistance, good dimensional stability and fatigue performance, low density and controllable expansion coefficient, etc., so in aerospace, It has wide application and research value in fields such as weaponry and automobile industry. [0003] Boron carbide particles are a ceramic material with many excellent properties, with high hardness and low density (2.529g / cm 3 ), excellent high temperature stability and oxidation resistance, in addition, boron carbide is resistant to strong acids and alkalis, has good wear resistance, is not eas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/02C22C21/00C22C32/00C22F1/04
Inventor 黎恩丞黎宇欧阳翰章
Owner 深圳优越科技新材料有限公司
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