Tungsten carbide-steel based composite material and preparation method thereof

A composite material and tungsten carbide technology, which is applied in the field of development and design of new materials, can solve the problems of tungsten carbide-steel matrix composite materials such as decreased strength and hardness, complicated preparation process, and reduced material performance, so as to improve wear resistance and make materials cheaper Easy to obtain and less investment in equipment

Active Publication Date: 2018-11-06
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it inevitably leads to the complexity and difficulty of the preparation process, and the addition of cobalt as a metal binder phase will cause a decrease in the strength and hardness of the tungsten carbide-steel matrix composite material, resulting in a decrease in material performance.

Method used

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  • Tungsten carbide-steel based composite material and preparation method thereof
  • Tungsten carbide-steel based composite material and preparation method thereof
  • Tungsten carbide-steel based composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A preparation method of a tungsten carbide-steel matrix composite material in which rare earth regulates particle microscopic interface growth is as follows:

[0032] (1) Vacuum ball mill 60-mesh spherical cast tungsten carbide particles and rare earth element Y for 24 hours, so that the rare earth elements are fully attached to the surface of tungsten carbide (the scanning electron microscope picture of tungsten carbide particles with rare earth element Y is shown in figure 2 As shown, the metallographic diagram is as image 3 shown, from figure 2 and image 3 It can be seen that the rare earth element Y is evenly attached to the surface of tungsten carbide particles, and its surface energy spectrum data are shown in Table 2. It can be seen that the Y element is fully attached to the surface of tungsten carbide particles, and the content reaches 8.6%). After ball milling, use a 100-mesh sieve to remove unattached rare earth elements, and then mix them evenly with h...

Embodiment 2

[0040] A preparation method of a tungsten carbide-steel matrix composite material in which rare earth regulates particle microscopic interface growth is as follows:

[0041] (1) Mix 70-mesh spherical cast tungsten carbide particles with a mixture of rare earth elements Y and Nd and vacuum ball mill for 30 hours to make the rare earth elements fully adhere to the surface of tungsten carbide. After the ball milling, use a 100-mesh sieve to remove unattached rare earth elements , and then mixed evenly with high manganese steel powder as a composite layer material; wherein, the mass percentage of rare earth elements (Y+Nd) is 4%, the mass percentage of tungsten carbide is 42%, and the balance is high manganese steel powder;

[0042] (2) Mix tungsten powder and high manganese steel powder evenly as a transition layer material; wherein, the mass percentage of tungsten powder is 35%, and the balance is high manganese steel powder;

[0043] (3) The base layer material is high manganes...

Embodiment 3

[0047] A preparation method of a tungsten carbide-steel matrix composite material in which rare earth regulates particle microscopic interface growth is as follows:

[0048] (1) Mix 80-mesh spherical cast tungsten carbide particles with rare earth element Ta and vacuum ball mill for 40 hours to make the rare earth elements fully adhere to the surface of tungsten carbide. The steel powder is mixed uniformly as a composite layer material; wherein, the mass percentage of the rare earth element Ta is 2%, the mass percentage of tungsten carbide is 50%, and the balance is 45% steel powder;

[0049] (2) Mix tungsten powder and 45 steel powder evenly as a transition layer material; wherein, the mass percentage of tungsten powder is 40%, and the balance is 45 steel powder;

[0050] (3) The base layer material is 45 steel powder;

[0051] (4) The three materials were ball milled for 1 hour, and then pressed into a three-layer prefabricated body with a tablet press according to the stru...

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Abstract

The invention relates to a tungsten carbide-steel based composite material capable of regulating and controlling particle microscopic interface growth through rare earth and a preparation method thereof. The tungsten carbide-steel based composite material comprises a composite layer, a transition layer and a base body layer. The preparation method comprises the steps that tungsten carbide-steel powder mixed powder with a rare earth element-coated surface is adopted to serve as a composite layer material, tungsten powder-steel powder mixed powder serves as transition layer material, steel powder serves as base body layer material, wherein the rare earth element is the mixture of one or more of Nd, Y and Ta, tungsten carbide particle-steel powder mixed powder with the rare earth element powder-coated surface layer, the tungsten powder-steel powder mixed powder and the steel powder are jointly pressed into a composite layer-transition layer-base body layer prefabricated body, and the prefabricated body is placed in a vacuum tube type sintering furnace to be sintered and formed.

Description

technical field [0001] The invention relates to a tungsten carbide-steel matrix composite material and a preparation method thereof, in particular to a tungsten carbide-steel matrix composite material in which rare earth regulates particle microscopic interface growth and a preparation method thereof, belonging to the field of development and design of new materials. Background technique [0002] The wear of materials starts from the surface of the material. The wear resistance of the wear-resistant material surface determines its service life under wear conditions. Therefore, how to improve the wear resistance of the material surface is the focus of the development and research of wear-resistant materials. Compared with traditional single metal materials, ceramic particle reinforced steel matrix surface composite materials have become the mainstream of wear-resistant materials research and development due to their unique structure, excellent performance and high cost perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/02B22F1/00
CPCB22F1/0003B22F7/02
Inventor 李祖来颜哲山泉蒋业华张亚峰
Owner KUNMING UNIV OF SCI & TECH
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