Bionic laminated graphene composite ceramic cutter and preparation method thereof

A technology of laminated graphene and composite ceramics, which is applied in the field of machinery manufacturing and silicate materials, to achieve the effects of improving tool life, good high-temperature cutting performance, and inhibiting crack growth

Active Publication Date: 2021-03-09
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical task of the present invention is to provide a bionic laminated graphene composite ceramic tool and its preparation method to solve how to further improve the performance of the ceramic composite material in the high-speed cutting process while ensuring the high strength and hardness of the ceramic tool material. Fracture toughness and anti-friction and anti-wear performance issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of the bionic laminated graphene composite ceramic cutter of the present invention is specifically as follows:

[0035] (1), ultrasonically disperse 0.35g of graphene nanosheets in 100ml of absolute ethanol for 1h to obtain a uniformly dispersed graphene dispersion; pour the graphene dispersion into 78.5g of submicron alumina and 19g of titanium boride , magnesia 0.45g, yttrium oxide 0.55g high-energy ball milling 36h in the ball mill tank; after drying, sieving to obtain the surface composite original powder;

[0036] (2) Pour the mixed dispersion containing 78.5g of submicron alumina, 20.5g of titanium nitride, 0.55g of magnesium oxide, and 0.45g of yttrium oxide into a ball mill tank for high-energy ball milling for 48 hours; dry and sieve to obtain the matrix layer Composite raw powder;

[0037] (3), the composite original powder of the surface layer and the composite original powder of the matrix layer are alternately laminated in the graphi...

Embodiment 2

[0041] (1), ultrasonically disperse 0.25g of graphene nanosheets in 100ml of absolute ethanol for 1h to obtain a uniformly dispersed graphene dispersion; pour the graphene dispersion into 78.9g of submicron alumina and 21g of titanium boride , magnesia 0.6g, yttrium oxide 0.4g high-energy ball milling 36h in the ball mill tank; after drying, sieving to obtain the surface composite original powder;

[0042] (2) Pour the mixed dispersion containing 79.5g of submicron alumina, 19g of titanium nitride, 0.4g of magnesium oxide, and 0.6g of yttrium oxide into a ball mill tank for high-energy ball milling for 48 hours; dry and sieve to obtain a composite matrix layer raw powder;

[0043] (3), the composite original powder of the surface layer and the composite original powder of the matrix layer are alternately laminated in the graphite mold in turn, and each layer is pre-pressed once; the number of laminated layers is 7 layers, the layer thickness ratio is 4, and the surface layer i...

Embodiment 3

[0047] (1), ultrasonically disperse 0.3g of graphene nanosheets in 100ml of absolute ethanol for 1h to obtain a uniformly dispersed graphene dispersion; pour the graphene dispersion into 78.7g of submicron alumina and 20g of titanium boride , magnesia 0.5g, yttrium oxide 0.5g high-energy ball milling 36h in the ball mill tank; after drying, sieving to obtain the surface composite original powder;

[0048] (2) Pour the mixed dispersion containing 79g of submicron alumina, 20g of titanium nitride, 0.5g of magnesium oxide, and 0.5g of yttrium oxide into a ball mill tank for high-energy ball milling for 48 hours; dry and sieve to obtain the matrix layer composite original powder;

[0049] (3), the composite original powder of the surface layer and the composite original powder of the matrix layer are alternately laminated in the graphite mold, and each layer is pre-pressed once; the number of laminated layers is 7 layers, the layer thickness ratio is 6, and the surface layer is th...

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Abstract

The invention discloses a bionic laminated graphene composite ceramic cutting cutter and a preparation method thereof, belongs to the field of mechanical manufacturing and silicate materials, and aimsto solve the technical problem of how to ensure high strength and hardness of a ceramic cutting tool material. According to the technical scheme, the cutter is formed by sequentially and alternatelylaying a surface layer and a base body layer according to different layer numbers and layer thickness ratios, the surface layer is made of an aluminum oxide titanium boride graphene nanosheet composite material, and the base body layer is made of aluminum oxide titanium boride graphene nanosheet composite material. The matrix layer is made of an aluminum oxide titanium nitride composite material,the total layer number of the surface layer and the matrix layer is not less than 3, and the layer thickness ratio of the surface layer to the matrix layer is at least 2. The preparation method specifically comprises the following steps: (1) preparing thin-layer mixed original powder, (2) preparing aluminum oxide and titanium nitride mixed original powder, (3) laying and stacking, (4) sintering, and (5) preparing the laminated ceramic cutter.

Description

technical field [0001] The invention relates to the fields of mechanical manufacturing and silicate materials, in particular to a bionic laminated graphene composite ceramic cutter and a preparation method thereof. Background technique [0002] Laminated composite material refers to a new type of composite material that uses composite technology to achieve a firm combination of two or more materials with different properties at the interface. The unique multi-interface structure of biomimetic laminated composites and the generation of residual compressive stress on the surface can improve the strength of the material and at the same time ensure that the composite has a certain degree of plasticity and toughness. Combined with state decision. Therefore, the structure and characteristics of the matrix layer and the surface layer, their respective volume content, number of layers and layer thickness ratio play a decisive role in the performance of laminated composite ceramic m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/111C04B35/64
CPCC04B35/111C04B35/64C04B2235/3813C04B2235/425C04B2235/3206C04B2235/3225C04B2235/3886C04B2235/5445C04B2235/666C04B2235/6562C04B2235/6567C04B2235/96
Inventor 肖光春陈本帅许崇海陈照强衣明东张静婕
Owner QILU UNIV OF TECH
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