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A kind of Al-based boron 10 composite material and preparation method thereof

A composite material and boron-based technology, which is applied in the field of Al-based boron-10 composite material and its preparation, can solve the problems of neutron shielding materials such as poor shielding efficiency, difficult machining, and easy aging, and achieve good neutron shielding performance and mechanical The effect of easy processing and easy operation

Active Publication Date: 2017-06-16
HARBIN INST OF TECH
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  • Summary
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems of poor shielding efficiency, easy aging, short service life and difficult mechanical processing of existing neutron shielding materials, and provides an Al-based boron-10 composite material and its preparation method

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  • A kind of Al-based boron 10 composite material and preparation method thereof

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specific Embodiment approach 1

[0015] Embodiment 1: In this embodiment, an Al-based boron 10 composite material is made of 30%-75% boron powder and 25%-70% aluminum metal by volume fraction; the aluminum metal is pure aluminum or aluminum alloy.

specific Embodiment approach 2

[0016] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the aluminum alloy is Al-Si alloy, Al-Cu alloy, Al-Mg alloy, Al-Si-Cu alloy, Al-Si-Mg alloy , Al-Cu-Mg alloy and Al-Si-Cu-Mg alloy or a combination of several of them. Others are the same as the first embodiment.

specific Embodiment approach 3

[0017] Specific embodiment three: this embodiment is different from specific embodiment one or two in that: the mass fraction of Si in the Al-Si alloy is 1% to 25%, and the mass fraction of Cu in the Al-Cu alloy is 1 % to 53%, the mass fraction of Mg in the Al-Mg alloy is 1% to 38%. Others are the same as those in Embodiment 1 or 2.

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Abstract

An Al-based boron-10 composite material and a preparation method thereof relate to an Al-based boron-10 composite material and a preparation method thereof. The invention aims to solve the problems of poor shielding efficiency, easy aging, short service life and difficult mechanical processing of the existing neutron shielding materials. The Al-based boron 10 composite material is made of 30%-75% boron powder and 25%-70% aluminum metal according to the volume fraction; the aluminum metal is pure aluminum or aluminum alloy. Methods: 1. Weighing materials; 2. Prefabricated body preparation; 3. Preheating; 4. Casting. The particle distribution in the composite material prepared by the invention is uniform, the composite material has high density and is easy to machine. The preparation method of the invention is simple, easy to operate, and the process is easy to control, and the prepared Al-based boron-10 composite material has the characteristics of high density and good neutron shielding performance. The invention is used for the safety and protection of nuclear radiation.

Description

technical field [0001] The invention relates to an Al-based boron-10 composite material and a preparation method thereof. Background technique [0002] With the rapid development of nuclear technology, the safety and protection of nuclear radiation has become more and more important. When the nuclear reactor is running, the core will produce a large amount of α, β, γ, X and other rays and radiation of protons, neutrons, deuterium nuclei, and fission products. Strong radiation damage is the focus of shielding. [0003] For neutron shielding and absorption, it is necessary to select elements with a large neutron absorption cross-section. Common elements include helium, lithium, gadolinium, cadmium, europium, and boron 10. Among them, samarium and europium are complex and expensive to prepare, gadolinium has a short service life, cadmium is toxic and carcinogenic, and these elements will emit highly penetrating gamma rays after absorbing neutrons, which increases the difficul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C30/00C22C30/02C22C1/10G21F1/08
CPCG21F1/08C22C1/1015C22C1/1036C22C9/01C22C21/00C22C21/12C22C30/00C22C30/02C22C1/1073
Inventor 武高辉乔菁陈国钦姜龙涛王丽雪
Owner HARBIN INST OF TECH
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