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Alumina ceramic-wear resistant steel composite material and preparation method thereof

A technology of alumina ceramics and composite materials, which is applied in the field of wear-resistant steel matrix modification, can solve the problems of complex process complexity, large residual stress at the interface, poor chemical stability, etc., and achieves good wear resistance, high connection strength, improved Wetting effect

Active Publication Date: 2019-03-12
JIAMUSI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are also problems such as the complexity of the composite process of ceramics and wear-resistant steel matrix, high cost, large residual stress at the interface, and poor chemical stability.

Method used

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  • Alumina ceramic-wear resistant steel composite material and preparation method thereof
  • Alumina ceramic-wear resistant steel composite material and preparation method thereof
  • Alumina ceramic-wear resistant steel composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] The composite material of alumina ceramics and wear-resistant steel in this embodiment includes a wear-resistant steel substrate, a ceramic layer and an enamel layer, the enamel layer is located in the middle of the wear-resistant steel substrate and the ceramic layer, and the thickness of the enamel layer is 5 mm; The thickness of the ceramic layer is 20mm; the enamel layer includes the following components in mass percentage: SiO 2 50%, B 2 o 3 16%, Na 2 O 12%, K 2 O 6%, CoO 1.5%, NiO 1.5%, balance Al 2 o 3 ; The ceramic layer comprises the following components in mass percentage: TiO 2-x 4%, CuO2%, the balance is Al 2 o 3 .

[0023] This embodiment also provides the method for the above-mentioned composite material of alumina ceramics and wear-resistant steel, the method comprising the following steps:

[0024] Step 1. Pretreatment of the wear-resistant steel substrate: decarburize the wear-resistant steel substrate at a temperature of 940°C for 15 minutes,...

Embodiment 2

[0043] The composite material of alumina ceramics and wear-resistant steel in this embodiment includes a wear-resistant steel substrate, a ceramic layer and an enamel layer, the enamel layer is located in the middle of the wear-resistant steel substrate and the ceramic layer, and the thickness of the enamel layer is 1mm; The thickness of the ceramic layer is 5mm; the enamel layer includes the following components in mass percentage: SiO 2 40%, B 2 o 3 20%, Na 2 O 15%, K 2 O 1%, CoO 1%, NiO 1%, the balance is Al 2 o 3 ; The ceramic layer comprises the following components in mass percentage: TiO 2-x 10%, CuO10%, the balance is Al 2 o 3 .

[0044] This embodiment also provides the method for the above-mentioned composite material of alumina ceramics and wear-resistant steel, the method comprising the following steps:

[0045]Step 1. Pretreatment of the wear-resistant steel substrate: decarburize the wear-resistant steel substrate at a temperature of 910°C for 10 minute...

Embodiment 3

[0054] The composite material of alumina ceramics and wear-resistant steel in this embodiment includes a wear-resistant steel substrate, a ceramic layer and an enamel layer, the enamel layer is located in the middle of the wear-resistant steel substrate and the ceramic layer, and the thickness of the enamel layer is 5 mm; The thickness of the ceramic layer is 35mm; the enamel layer includes the following components in mass percentage: SiO 2 60%, B 2 o 3 5%, Na 2 O 1%, K 2 O 10%, CoO 5%, NiO 5%, the balance is Al 2 o 3 ; The ceramic layer comprises the following components in mass percentage: TiO 2-x 1%, CuO 1%, the balance is Al 2 o 3 .

[0055] This embodiment also provides the method for the above-mentioned composite material of alumina ceramics and wear-resistant steel, the method comprising the following steps:

[0056] Step 1. Pretreatment of the wear-resistant steel substrate: decarburize the wear-resistant steel substrate at a temperature of 940°C for 20 minut...

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Abstract

The invention provides an alumina ceramic-wear resistant steel composite material which comprises a wear resistant steel matrix, a ceramic layer and an enamel layer; and the enamel layer is arranged between the wear resistant steel matrix and the ceramic layer. The invention also provides a preparation method of the alumina ceramic-wear resistant steel composite material. The preparation method comprises the following steps of performing decarburization treatment on the wear resistant steel matrix to obtain the wear resistant steel matrix, preparing enamel powder and ceramic particle, then sequentially putting the materials in a lapping tool, and performing bi-directional compression and normal pressure sintering to obtain the alumina ceramic-wear resistant steel composite material. For the alumina ceramic-wear resistant steel composite material provided by the invention, the enamel layer can wet the ceramic layer and can improve the wettability with the wear resistant steel matrix toform chemical bond bonding; a part of the enamel powder is charged in pores of the ceramic layer, so that bubbles are difficultly formed between the wear resistant steel matrix and the enamel layer; and TiO2-x and CuO in the ceramic layer can lower the sintering temperature as sintering aids, prevent the wear resistant steel matrix from oxidizing, improves the preparation efficiency and lowers thepreparation cost.

Description

technical field [0001] The invention belongs to the technical field of modification of wear-resistant steel substrates, and in particular relates to a composite material of alumina ceramics and wear-resistant steel and a preparation method thereof. Background technique [0002] The wear-resistant steel matrix is ​​mainly used in the conveying or crushing of materials in mining, metallurgy and electric power industries, such as lining plates, grinding rollers, shovel teeth and crushing walls. Parts fail. In order to further improve the wear resistance of the wear-resistant steel matrix, the wear-resistant steel matrix of a single material cannot meet the requirements of enterprises. Therefore, the development of composite wear-resistant materials based on wear-resistant steel matrix has become an urgent issue in the industry. At present, the processes for improving the wear resistance of wear-resistant steel substrates mainly include inlaying cemented carbide blocks, bimetal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/00C04B35/10C04B35/626C23D5/00
CPCC23D5/005C03C8/00C04B35/10C04B35/62605C04B2235/3232C04B2235/3281
Inventor 焦仁宝荣守范李洪波王迪张圳炫朱永长刘力
Owner JIAMUSI UNIVERSITY
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