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Preparation of ceramic reinforced aluminum-based composite material with coated surface

An aluminum matrix composite material and surface coating technology, which is applied in the field of preparation of aluminum matrix composite materials, can solve the problems of high cost, complicated process, unstable performance, etc., and achieve the effect of short coating time, simple process and shortened cycle

Inactive Publication Date: 2010-11-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of high cost, complex process and unstable performance of the existing aluminum-based composite materials, the present invention provides a preparation method for coating aluminum-based composite materials on the surface of ceramic reinforcements

Method used

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specific Embodiment approach 1

[0007] Specific Embodiment 1: The preparation method of the aluminum-based composite material coated on the surface of the ceramic reinforcement in this embodiment is carried out in the following steps: 1. Grind the metal salt and the alkaline substance in an agate mortar to a particle size of 0.1-50 μm 2. Mix the particles of the metal salt, the particles of the alkaline substance and the ceramic reinforcement uniformly in the same container to make mixed particles, and the molar ratio between the particles of the metal salt and the particles of the alkaline substance is 1 to 2:1 ~4. The mass ratio between the total amount of metal salt particles and alkaline substance particles and the ceramic reinforcement is 1:6~40; 3. The mixed particles are ball milled on a ball mill, and the diameter of the ball milling medium is 2~15mm Agate balls with a ball-to-material ratio of 5 to 20:1, a ball milling tank speed of 50 to 400r / min, and a ball milling time of 5 to 60 minutes to obtain...

specific Embodiment approach 2

[0008] Embodiment 2: This embodiment differs from Embodiment 1 in that: the particle size of the metal salt and alkaline substance in Step 1 is 0.2-40 μm. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0009] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the particle size of the metal salt and alkaline substance in Step 1 is 0.2-30 μm. Other steps and parameters are the same as in the first embodiment.

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Abstract

The invention relates to a preparation method of aluminum-based composite material of surface coating of a ceramic reinforcement body, in particular to a preparation method of aluminum-based composite material. The preparation method solves the problems of high cost, complex process and unstable performance in the prior aluminum-based composite material. The preparation method comprises the following steps: firstly, metal salt and alkaline matters are respectively ground in a mortar; secondly, the metal salt, the alkaline matters and the ceramic reinforcement body are mixed into particles according to proportions; thirdly, the mixed particles are ground in a ball mill; fourthly, the ceramic reinforcement body with a coating layer on the surface is washed by deionized water; fifthly, a prefabricated member is prepared and sintered at the temperature of 400-1000 DEG C; and sixthly, the prefabricated member and the metallic aluminum are in extrusion casting so that the aluminum-based composite material of the surface coating of the ceramic reinforcement body is prepared. The invention adopts a ball milling process to coat the surface of the ceramic reinforcement body, and compared with other processes, the cost is reduced by 60-70 percent, and the period is shortened by more than 80 percent.

Description

Technical field: [0001] The invention relates to a preparation method of an aluminum-based composite material. Background technique: [0002] Aluminum-based composite materials have become the aviation industry due to a series of advantages such as high specific strength, high specific stiffness, wear resistance, high temperature resistance, good thermal conductivity, low expansion coefficient, high dimensional stability, and good fatigue and fracture properties. The ideal materials for cutting-edge technologies such as aerospace and advanced weapons have received more and more attention from all over the world in recent years. In the study of aluminum matrix composites, the reinforcement / matrix interface has always been the focus of attention, because the condition of the interface region has a significant impact on the performance and characteristics of composite materials. Due to the high designability of the interface of composite materials, improving the performance of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C32/00C22C1/10C22C21/00
Inventor 刘刚胡津
Owner HARBIN INST OF TECH
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