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A high-strength titanium-based boron-tungsten composite shielding material and its preparation method

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

Active Publication Date: 2021-07-13
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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  • A high-strength titanium-based boron-tungsten composite shielding material and its preparation method
  • A high-strength titanium-based boron-tungsten composite shielding material and its preparation method
  • A high-strength titanium-based boron-tungsten composite shielding material and its preparation method

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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, which is prepared from the following raw materials in mass percentage: 0.5%-1.5% of boron and / or boron carbide, 20.0%-40.0% of tungsten, and the balance is titanium, high-strength The tensile strength of the titanium-based boron-tungsten composite shielding material is higher than 900MPa; the invention also discloses a preparation method of a high-strength titanium-based boron-tungsten composite shielding material. The raw material powders are mixed and ground, and then sintered and cooled to obtain the composite shielding material. . The boron element and tungsten element contained in the raw material of the present invention realize the shielding of neutrons and gamma rays, and the titanium carbide and titanium boride formed by using titanium as the base material and boron and boron carbide improve the mechanical strength of the composite shielding material; The invention removes residual gas through a sintering process, promotes the formation of titanium carbide and titanium boride, and the composite shielding material has excellent shielding performance and mechanical properties, and is suitable for nuclear radiation shielding in high-intensity environments.

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 Patents(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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