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B4C-based laminate ceramic composite material and preparation method thereof

A technology of ceramic composite material and base layer, applied in the field of materials, can solve problems such as complicated procedures, and achieve the effects of simplifying the preparation process, avoiding spalling, and improving impact resistance.

Active Publication Date: 2014-09-03
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its preparation process has advantages, but the process is more complicated

Method used

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  • B4C-based laminate ceramic composite material and preparation method thereof
  • B4C-based laminate ceramic composite material and preparation method thereof
  • B4C-based laminate ceramic composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] B 4 C base layer ceramic composite material is made of B 4 C-Ti-C layer and B 4 Composite of C-Si layer, B 4 C-Ti-C layer and B 4 The thickness ratio of the C-Si layer is 1; B 4 C-Ti-C layer powder consists of: boron carbide powder: 94.5%, titanium powder: 2.5%, carbon black: 3%; B 4 The C-Si layer powder material is composed of: boron carbide powder: 96%, silicon powder: 4%.

[0024] Among them, boron carbide powder has a purity of >99% and a particle size of 3.5 μm, titanium powder has a purity of >99% and a particle size of 50 μm, carbon black has a purity of >99% and a particle size of 1 μm, and silicon powder has a purity of >99% and a particle size of 74 μm.

[0025] B of this embodiment 4 The preparation method of C base layer ceramic composite material, concrete steps are as follows:

[0026]Step 1, ingredients: take B by mass percentage respectively 4 C-Ti-C layer and B 4 Powder of C-Si layer;

[0027] Step 2, mixing: weigh B respectively 4 C-Ti-C la...

Embodiment 2

[0036] B 4 C base layer ceramic composite material is made of B 4 C-Ti-C layer and B 4 Composite of C-Si layer, B 4 C-Ti-C layer and B 4 The thickness ratio of C-Si layer is 1 / 9; B 4 C-Ti-C layer powder consists of: boron carbide powder: 93%, titanium powder: 2%, carbon black: 5%; B 4 The C-Si layer powder material is composed of: boron carbide powder: 92%, silicon powder: 8%.

[0037] Among them, boron carbide powder has a purity of >99% and a particle size of 1 μm, titanium powder has a purity of >99% and a particle size of 20 μm, carbon black has a purity of >99% and a particle size of 0.1 μm, and silicon powder has a purity of >99% and a particle size of 80 μm.

[0038] B of this embodiment 4 The preparation method of C base layer ceramic composite material, concrete steps are as follows:

[0039] Step 1, ingredients: take B by mass percentage respectively 4 C-Ti-C layer and B 4 Powder of C-Si layer;

[0040] Step 2, mixing: the weighed B 4 C-Ti-C layer and B 4...

Embodiment 3

[0049] B 4 C base layer ceramic composite material is made of B 4 C-Ti-C layer and B 4 Composite of C-Si layer, B 4 C-Ti-C layer and B 4 The thickness ratio of the C-Si layer is 3; B 4 C-Ti-C layer powder is composed of: boron carbide powder: 95%, titanium powder: 2.5%, carbon black: 2.5%; B 4 The C-Si layer powder is composed of: boron carbide powder: 88%, silicon powder: 12%.

[0050] Among them, boron carbide powder has a purity of >99% and a particle size of 10 μm, titanium powder has a purity of >99% and a particle size of 74 μm, carbon black has a purity of >99% and a particle size of 2 μm, and silicon powder has a purity of >99% and a particle size of 70 μm.

[0051] B of this embodiment 4 The preparation method of C base layer ceramic composite material, concrete steps are as follows:

[0052] Step 1, ingredients: take B by mass percentage respectively 4 C-Ti-C layer and B 4 Powder of C-Si layer;

[0053] Step 2, mixing: the weighed B 4 C-Ti-C layer and B 4...

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Abstract

The invention relates to a B4C-based laminate ceramic composite material and a preparation method thereof, which belongs to the material technical field. The B4C-based laminate ceramic composite material is composited by a B4C-Ti-C layer and a B4C-Si layer, thickness ratio of the B4C-Ti-C layer to the B4C-Si is 1 / 9-9; the powder of the B4C-Ti-C layer comprises the following components by mass: 93-95% of boron carbide powder, 2-4% of titanium powder and 1-5% of carbon black. The preparation method comprises five steps of preparing the materials, mixing, drying, precompressing for moulding and performing vacuum hot pressing sintering. When the B4C ceramic layer of the B4C-based laminate ceramic composite material is a stress surface, the hardness is 28.0-35.0GPa, the fracture toughness is 2.2-4.8MPa.m<1 / 2>, the rupture strength is 293-514MPa, and the fracture toughness is increased by 2 times on the basis of a single boron carbide material. The preparation method employs a single step hot pressing sintering method, simplifies the preparation technology, and reduces the preparation cost; the prepared B4C-based laminate ceramic composite material has high density and good mechanical property, and can be used for lightweight bulletproof armor manufacture field.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to a B 4 C-based layered ceramic composite material and preparation method thereof. Background technique [0002] Armor bulletproof materials can be roughly divided into metals, ceramics, fiberglass and fibers. Armor and bulletproof materials should have the characteristics of high hardness, high strength, high toughness, low density and low cost, that is, "three highs and two lows". Metal materials have good toughness, but their density is high and their hardness is lower than that of ceramic materials, which cannot meet the requirements of high flexibility of equipment. Therefore, lightweight bulletproof armor materials have become the focus and trend of current research and development. FRP has the characteristics of high strength and low density, but low hardness. Fiber material has low density and good toughness, but its hardness is low. Ceramic materials have excellent ...

Claims

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Application Information

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IPC IPC(8): C04B35/563C04B35/622
Inventor 岳新艳王建军李振楠范思洋茹红强
Owner NORTHEASTERN UNIV
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