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Preparation method of aluminum based composite material reinforced by aluminium borate whisker coated with CuO

The technology of aluminum matrix composite material and aluminum borate whisker is applied in the field of preparation of whisker reinforced aluminum matrix composite material, which can solve the problems of poor mechanical properties and cannot be used in high temperature environment, and achieves the improvement of elongation and the improvement of high temperature interface. Stability, uniform coating effect

Inactive Publication Date: 2011-08-31
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the defects of poor mechanical properties and inability to be used in high-temperature environments in current aluminum borate whisker-reinforced aluminum-matrix composite materials, and provides a preparation method of CuO-coated aluminum borate whisker-reinforced aluminum-matrix composite materials

Method used

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  • Preparation method of aluminum based composite material reinforced by aluminium borate whisker coated with CuO
  • Preparation method of aluminum based composite material reinforced by aluminium borate whisker coated with CuO
  • Preparation method of aluminum based composite material reinforced by aluminium borate whisker coated with CuO

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specific Embodiment approach 1

[0021] Specific implementation mode 1: In this implementation mode, CuO-coated aluminum borate whisker-reinforced aluminum matrix composite material is carried out according to the following steps:

[0022] 1. Add copper nitrate and citric acid into distilled water at a molar ratio of 1:1, then magnetically stir and heat to reflux for 1-2 hours to obtain a transparent CuO sol;

[0023] 2. Add aluminum borate whiskers to CuO sol and disperse them with ultrasonic waves, and then dry them to obtain CuO gel-coated aluminum borate whiskers;

[0024] 3. Put the CuO gel-coated aluminum borate whiskers in an environment of 400-600°C and roast for 1-3 hours to make CuO-coated aluminum borate whiskers, and then put them into water for ultrasonic dispersion for 1-2 hours;

[0025] 4. Make prefabricated parts of CuO-coated aluminum borate whiskers that have been ultrasonically dispersed in Step 3 by compression molding, then dry at room temperature, and then bake in an environment of 800-...

specific Embodiment approach 2

[0029] Embodiment 2: The differences between this embodiment and Embodiment 1 are: in step 2, the ultrasonic dispersion time is 1-3 hours, the ultrasonic power is 1000-2000 W, and the ultrasonic frequency is 50-80 Hz. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0030] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in Step 5, the CuO-coated aluminum borate whisker preform accounts for 17%-28% of the total volume of the aluminum matrix composite material. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of an aluminum based composite material reinforced by aluminium borate whisker coated with CuO, relating to a preparation method of an aluminum based composite material reinforced by the aluminium borate whisker and overcoming the defects that the existing aluminum based composite material reinforced by the aluminium borate whisker is poor in mechanical property and incapable of being used in high-temperature environment. The preparation method includes the steps of firstly preparing CuO sol, secondly preparing the aluminium borate whisker coated with the CuO sol, thirdly preparing an aluminium borate whisker prefabticated member coated with the CuO sol, and fourthly preparing the aluminum based composite material reinforced by the aluminium borate whisker coated with CuO. The preparation method can be used for the aluminum based composite material reinforced by whisker.

Description

technical field [0001] The invention relates to a preparation method of a whisker-reinforced aluminum-based composite material. Background technique [0002] Composite materials can simultaneously exert the synergistic effect of the matrix and the reinforcement, and have great designability in the composition, organization and performance of the material. Therefore, it has great development advantages and has attracted great attention of material researchers from all over the world. [0003] Whisker-reinforced aluminum matrix composites have a series of advantages such as low cost, isotropy, excellent mechanical properties and easy processing and deformation. Therefore, as a new type of structural material, it has a very wide application prospect. Initially, most researchers focused on SiC and Si 3 N 4 on the whiskers. However, the high price largely limits its wide application in aluminum matrix composites. Aluminum borate whiskers are not only compatible with SiC and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/04C22C47/12C22C49/06C22C101/02C22C121/02
Inventor 岳红彦黄硕郭二军王丽萍俞泽民
Owner HARBIN UNIV OF SCI & TECH
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