High-strength titanium-based boron-tungsten composite shielding material and preparation method thereof

A composite shielding, titanium-based technology, applied in the field of high-strength titanium-based boron-tungsten composite shielding materials and their preparation, can solve the problems of single function, material strength, low service temperature, etc., achieve simple operation process, improve tensile strength performance, Easy-to-process effects

Active Publication Date: 2021-05-14
西安稀有金属材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to avoid the ecological pollution of radioactive waste, it must be safely stored and processed. At present, the most used nuclear shielding materials are aluminum-based boron carbide, lead, concrete, boron-containing polyethylene and other materials. Low strength and service temperature

Method used

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  • High-strength titanium-based boron-tungsten composite shielding material and preparation method thereof
  • High-strength titanium-based boron-tungsten composite shielding material and preparation method thereof
  • High-strength titanium-based boron-tungsten composite shielding material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0032] The high-strength titanium-based boron-tungsten composite shielding material of this embodiment is prepared from the following raw materials in mass percentages: boron 0.79%, tungsten 32.45%, and titanium 66.76%.

[0033] The preparation process of the high-strength titanium-based boron-tungsten composite shielding material in this embodiment includes the following steps:

[0034] Step 1. Prepare boron powder with a mass purity of 99.93% and a particle size of 4 μm, tungsten powder with a mass purity of 99.95% and a particle size of 3 μm, and titanium powder with a mass purity of 99.94% and a particle size of 63 μm. Weigh the boron Powder 1.58g, tungsten powder 64.90g and titanium powder 133.52g, a total of 200g, mixed to obtain a mixed powder; wherein, the volume fraction of each raw material powder in the mixed powder is: boron powder 2%, tungsten powder 10%, titanium powder 88%.

[0035] Step 2, according to the mass ratio of bearing steel ball and mixed powder 5:1, w...

Embodiment 2

[0039] The high-strength titanium-based boron-tungsten composite shielding material of this embodiment is prepared from the following raw materials in mass percentages: 0.84% ​​boron carbide, 32.43% tungsten, and 66.73% titanium.

[0040] The preparation process of the high-strength titanium-based boron-tungsten composite shielding material in this embodiment includes the following steps:

[0041] Step 1. Prepare boron carbide powder with a mass purity of 99.95% and a particle size of 5 μm, tungsten powder with a mass purity of 99.95% and a particle size of 4 μm, and titanium powder with a mass purity of 99.94% and a particle size of 35 μm. Weigh the above 1.68g of boron carbide powder, 64.86g of tungsten powder and 133.46g of titanium powder, 200g in total, mixed well to obtain a mixed powder; wherein, the volume fraction of each raw material powder in the mixed powder is: boron carbide powder 2%, tungsten powder 10% , 88% titanium powder.

[0042] Step 2, according to the m...

Embodiment 3

[0049] The high-strength titanium-based boron-tungsten composite shielding material of this embodiment is prepared from the following raw materials in mass percentages: 0.40% boron, 0.42% boron carbide, 32.44% tungsten, and 66.74% titanium.

[0050] The preparation process of the high-strength titanium-based boron-tungsten composite shielding material in this embodiment includes the following steps:

[0051] Step 1, prepare mass purity as 99.93%, boron powder with a particle size of 3 μm, mass purity of 99.95%, boron carbide powder with a particle size of 5 μm, mass purity of 99.95%, tungsten powder with a particle size of 5 μm, with a mass purity of 99.94%, titanium powder with a particle size of 70 μm, weigh 0.8g of the above-mentioned boron powder, 0.84g of boron carbide powder, 64.88g of tungsten powder and 133.48g of titanium powder, a total of 200g, and mix well to obtain a mixed powder; wherein, each of the mixed powder The volume fraction of raw material powder is: bor...

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Abstract

The invention discloses a high-strength titanium-based boron-tungsten composite shielding material. The material is prepared from the following raw materials in percentage by mass: 0.5%-1.5% of boron and / or boron carbide, 20.0%-40.0% of tungsten and the balance of titanium, wherein the tensile strength of the high-strength titanium-based boron-tungsten composite shielding material is higher than 900 MPa. The invention also discloses a preparation method of the high-strength titanium-based boron-tungsten composite shielding material, and the method comprises the following steps: mixing and grinding the raw material powder, and performing sintering and cooling to obtain the composite shielding material. The boron element and the tungsten element contained in the raw materials achieve shielding of neutrons and gamma rays, titanium serves as a base material, titanium carbide and titanium boride are generated through the titanium, boron and boron carbide, and the mechanical strength of the composite shielding material is improved; residual gas is removed through a sintering process, generation of titanium carbide and titanium boride is promoted, and the prepared composite shielding material has excellent shielding performance and mechanical performance and is suitable for nuclear radiation shielding in a high-strength environment.

Description

technical field [0001] The invention belongs to the technical field of metal-based composite material preparation, and in particular relates to a high-strength titanium-based boron-tungsten composite shielding material and a preparation method thereof. Background technique [0002] With the widespread application of nuclear energy, the high-level radioactive waste generated after the use of nuclear fuel poses a serious threat to the environment and organisms. In order to avoid the ecological pollution of radioactive waste, it must be safely stored and processed. At present, the most used nuclear shielding materials are aluminum-based boron carbide, lead, concrete, boron-containing polyethylene and other materials. Strength and service temperature are lower. [0003] Titanium and titanium alloys have a series of excellent properties such as high specific strength, light weight, and good corrosion resistance, making them ideal substrates for lightweight structural materials. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F1/08
CPCG21F1/085
Inventor 刘璐孙国栋常玉邱龙时潘晓龙田丰李海亮张于胜
Owner 西安稀有金属材料研究院有限公司
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