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Preparation process of modified magnesium borate crystal whisker reinforced magnesium-matrix composite material

A technology of magnesium borate whiskers and composite materials, applied in the preparation process of interface modification, the field of magnesium-based composite materials

Inactive Publication Date: 2010-05-12
QINGHAI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no relevant research on the modified magnesium borate whiskers reinforced magnesium matrix composites. Moreover, the nano-coating and interface design research on the surface of magnesium borate whiskers is the key to improve the magnesium borate whiskers reinforced magnesium matrix composites. key to the performance of

Method used

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Experimental program
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Effect test

Embodiment 1

[0058] Material composition: aluminum oxide: 1%; magnesium borate whiskers: 10%, magnesium and magnesium alloy: the balance.

[0059] Properties: Tensile strength: 440MPa

[0060] Elastic modulus: 60GPa

[0061] Density: 1.98g / cm 3

[0062] Elongation: 4%

Embodiment 2

[0064] Material composition: aluminum oxide: 1.5%; magnesium borate whiskers: 15%, magnesium and magnesium alloy: the balance.

[0065] performance:

[0066] Tensile strength: 480MPa

[0067] Elastic modulus: 62GPa

[0068] Density: 2.05g / cm 3

[0069] Elongation: 2.8%

Embodiment 3

[0071] Material composition: aluminum oxide: 2%; magnesium borate whiskers: 20%, magnesium and magnesium alloy: the balance.

[0072] performance:

[0073] Tensile strength: 500MPa

[0074] Elastic modulus: 65GPa

[0075] Density: 2.1g / cm 3

[0076] Elongation: 2.5%.

[0077] Compared with the prior art, the preparation process of a modified magnesium borate whisker-reinforced magnesium-based composite material has the following beneficial effects: the magnesium borate whisker is coated with a metal oxide coating through a reasonably designed process, which improves the The interface bonding state of the whisker-reinforced magnesium-based composite material can effectively improve the plastic forming ability of the magnesium-borate whisker-reinforced magnesium-based composite material.

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Abstract

The invention belongs to the technical field of new materials, in particular to a preparation process for modifying and optimizing magnesium alloy matrix and reinforcing the interphase contact surface and interface aiming at the magnesium borate crystal whisker reinforced magnesium-matrix composite material. The study proves that no obvious interface reaction occurs at the interface of the magnesium borate crystal whisker and the magnesium matrix, and the bonding strength of the interface is not high. By adopting the invention, the interface of the crystal whisker reinforced magnesium-matrix composite material reaches a better bonding state, and the performance of the magnesium borate crystal whisker reinforced magnesium-matrix composite material is improved. The preparation process comprises steps of coating the magnesium borate crystal whisker, preparing the modified magnesium borate crystal whisker prefabricated block, preparing cast composite ingot blank by a vacuum pressure infiltration method; and thermally extruding the ingot blank. The composite material comprises components of aluminium isopropoxide Al(OC3H7)3, distilled water, muriatic acid, magnesium borate crystal whisker, magnesium and the balance of magnesium alloy.

Description

technical field [0001] The invention belongs to the technical field of new materials, in particular to a preparation process for interface modification of a magnesium-based composite material reinforced by magnesium borate whiskers. Background technique [0002] Although there are many studies on whisker-reinforced metal matrix composites, there are not many reports on the interface modification of whisker-reinforced metal matrix composites. The only reported interface modification studies are for carbon fiber and boric acid. Aluminum whiskers, and its matrix is ​​also aluminum matrix composites. [0003] In the design and preparation process of magnesium-based composite materials, the selection of reinforcements, preparation methods and process parameters is varied. At the same time, these factors interact and influence each other to determine the performance of the material. The interface structure and properties are the key factors that determine the performance of mater...

Claims

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Application Information

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IPC IPC(8): C22C49/04C22C49/14C22C47/04C22C47/12C22C101/22
Inventor 金培鹏王金辉马国俊李丽荣郭彦宏王府吴波
Owner QINGHAI UNIVERSITY
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