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Preparation method for shell-nacreous-layer-imitating magnesium-based composite material

A composite material and nacre technology, which is applied in the field of biomimetic composite material preparation, can solve the problems of low production efficiency of directional freezing and thawing ice templates, inability to control the shape and size of reinforced particles, etc., and achieves good toughness, good wear resistance, high The effect of specific strength

Inactive Publication Date: 2016-03-09
ZHONGBEI UNIV
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Problems solved by technology

The laminated hot pressing process can easily realize the unique "brick-mud" microstructure between the layers of the imitation shell nacre, and the production efficiency is high, but the laminated hot pressing process cannot control the shape and size of the reinforced particles; directional freeze-thawing is a Simple physical process, by adjusting the process conditions, can successfully imitate the microstructure of mineral bridges in the shell nacre, hexagonal plate-shaped reinforcement particles, and surface roughness of reinforcement particles, but the production efficiency of the directional freeze-thaw ice template preparation technology is low

Method used

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  • Preparation method for shell-nacreous-layer-imitating magnesium-based composite material
  • Preparation method for shell-nacreous-layer-imitating magnesium-based composite material
  • Preparation method for shell-nacreous-layer-imitating magnesium-based composite material

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing:

[0023] A preparation method of a magnesium-based composite material imitating shell nacre, comprising the following steps:

[0024] 1) Preparation of porous layered reinforcement materials with regular polygonal sheet structure by ice template method:

[0025] a) Preparation of SiC particle suspension: Mix SiC particles and deionized water at a mass ratio of 3:5.8, stir and mix with a magnetic stirrer for 30 minutes, then disperse with ultrasound for 3-5 minutes, and finally stir with a magnetic stirrer Mix for 30 minutes to obtain a uniform and well-dispersed SiC particle suspension;

[0026] b) Make a frozen mold: The frozen mold includes a cooling base and a storage tank placed on the cooling base. The depth of the storage tank is 0.5 μm. The holes are all regular polygons, such as regular hexagons, regular pentagons, etc., such as figure 1 The shown regular hexagonal...

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Abstract

The invention discloses a preparation method for a shell-nacreous-layer-imitating magnesium-based composite material. A SiC particle reinforced magnesium-based composite material of a distinct shell-nacreous-layer structure can be prepared through the preparation method. A shell-nacreous-layer microstructure serves as a model, and a directional freeze thawing ice template method and a laminated hot pressing technique are adopted for preparing a biomimetic SiCp / Mg composite material with distinct shell-nacreous-layer microstructure characteristics and a controllable organizational structure. According to the novel preparation technique for biomimetic metal-based composite materials, the route is unique and the production efficiency is high. Compared with traditional magnesium-based composite materials, the prepared magnesium-based composite material of the shell-nacreous-layer-imitating structure not only has good mechanical properties such as high specific strength, high specific stiffness, good abrasion resistance, but also has good toughness and plasticity.

Description

technical field [0001] The invention relates to the preparation of a bionic composite material, in particular to a preparation method of a magnesium-based composite material imitating shell nacre. Background technique [0002] High-strength, high-modulus SiCp / Mg composites have the defects of low ductility and poor fracture toughness, which greatly limit the engineering application and promotion of SiCp / Mg composites, so the preparation of high-strength, high toughness, high stiffness and other comprehensive SiCp / Mg composite materials with excellent properties have become a research hotspot and focus in recent years. [0003] At present, the strengthening and toughening measures of metal matrix composites are mainly based on the relevant knowledge of traditional materials, and their toughening and strengthening effects are limited, which cannot meet the actual needs. [0004] Among many natural composite materials, shell nacre has attracted much attention due to its unique...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C23/00C22C32/00
CPCC22C1/10C22C23/00C22C32/0063
Inventor 原梅妮张佳庆裴畅贵李懿德王京张国庆王菁
Owner ZHONGBEI UNIV
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