Preparation method of bionic shell structure ceramic and metal composite material

Abstract

The invention discloses a preparation method of a bionic shell structure ceramic and metal composite material. The preparation method comprises the following steps that an ammonium bicarbonate solution and a nickel sulfate solution are correspondingly prepared for later use, chemical nickel plating is carried out on the surface of an alumina wafer layer by virtue of the prepared ammonium bicarbonate solution and the nickel sulfate solution, a nickel-coated alumina wafer layer block body is obtained by means of the metal nickel which is obtained after being subjected to chemical nickel plating,and hot-pressing sintering is carried out to obtain the bionic shell structure ceramic and metal composite material. The prepared bionic shell structure ceramic and metal composite material has highperformance.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a method for preparing a bionic shell structure ceramic and metal composite material. Background technique [0002] Among many natural biomaterials, shell nacre has attracted extensive attention due to its unique structure, extremely high strength and good toughness, and has become a model structure for the preparation of lightweight, high-strength and super-tough layered composites. [0003] The physical structure of nacre is deceptively simple and easy to imitate. Many processing techniques have been proposed to produce nacre-like materials, such as using layer-by-layer deposition, solution casting, and self-assembly to create biomimetic organic / inorganic materials. However, these processes are generally limited to fabricating not too thick ceramic layers (-200 μm), which are not yet suitable for structural applications or cannot replicate the fine structures fou...

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Problems solved by technology

However, these processes are generally limited to fabricating not too thick ceramic layers (-200 μm), which are not yet suitable for structural applications or cannot replicate the fine structures found in natural materials

[0004] It is worth noting the fact that there are currently no processing techniques that can produce composites with relatively high mineral content

And traditional processing techniques—casting and hot pressing, reaction sintering, and chemical vapor infiltration—cannot reduce the degree of microstructural control down to the nanoscale, which is required to manipulate and optimize the mechanical properties of materials.

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