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Radiation protection aluminium-base composite material and method for preparing the said material using two-stage air pressure and heat treatment

An aluminum-based composite material and a radiation protection technology, which is applied in the field of preparing the radiation-protected aluminum-based composite material by a two-stage hot-pressing powder metallurgy method, can solve the problems of a large proportion, complex process, poor stability, etc. Simple and reliable, particle size reduction, sintering-promoting effect

Inactive Publication Date: 2008-07-09
HARBIN INST OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems of large specificity, low strength and poor stability of existing radiation protection composite materials, and the preparation of metal matrix composite materials by powder metallurgy requires hot pressing and sintering under gas protection or vacuum conditions, expensive equipment, complicated processes, and high costs. The present invention aims to prepare BaPb through two-stage thermal pressure controlled oxidation in atmospheric environment 1-x Ce x o 3 / Al composite material, which has strong X-ray and γ-ray shielding ability and high tensile strength, simple preparation process and low cost

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  • Radiation protection aluminium-base composite material and method for preparing the said material using two-stage air pressure and heat treatment
  • Radiation protection aluminium-base composite material and method for preparing the said material using two-stage air pressure and heat treatment
  • Radiation protection aluminium-base composite material and method for preparing the said material using two-stage air pressure and heat treatment

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specific Embodiment approach 1

[0008] Specific implementation mode 1: The radiation protection aluminum-based composite material of this embodiment is composed of reinforcement phase BaPb 1-x Ce x o 3 and matrix Al composition, where BaPb 1-x Ce x o 3 Accounting for 3-20% of the total volume of the aluminum-based composite material, 0≤x≤0.5.

[0009] BaPb of this embodiment 1-x Ce x o 3 The / Al composite material is not only applicable to the two-stage atmospheric hot-pressing preparation method described in the present invention, it is also applicable to other methods for preparing Al-based composite materials in the field, such as vacuum hot-pressing method. The base Al in this embodiment is pure aluminum or aluminum alloy, preferably 2024 aluminum alloy.

specific Embodiment approach 2

[0010] Specific embodiment two: the difference between this embodiment and specific embodiment one is that BaPb 1-x Ce x o 3 Accounting for 5% of the total volume of the aluminum matrix composite.

specific Embodiment approach 3

[0011] Specific embodiment three: the difference between this embodiment and specific embodiment one is that BaPb 1-x Ce x o 3 Accounting for 10% of the total volume of the aluminum matrix composite.

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Abstract

The double-stage hot pressing preparation method for Al-base composite material in sulfide overcomes the problems in prior art that it comprises large-proportion composite material, has low stability and strength, and needs dear devices and complex technique by powder metallurgic method, and comprises: preparing photon-absorption micropowder and composite powder of Al alloy with high-energy ball grinding method, and double-stage hot pressing and sintering on air environment. This material comprises Al, and 3~20v%, BaPb1-xCexO3 (0<=x<=0.5).

Description

technical field [0001] The invention relates to an aluminum matrix composite material and a preparation process thereof, in particular to a radiation protection aluminum matrix composite material and a process for preparing the radiation protection aluminum matrix composite material by using a two-stage hot-pressing powder metallurgy method in an atmospheric environment. Background technique [0002] Ionizing radiation includes X-rays and γ-rays. Human beings have used ionizing radiation for nearly a hundred years. It is closely related to our life in many fields, but its harm is also very obvious. At the same time, with the development of aerospace technology, aerospace electronic components work in a complex space environment, which is full of various high-energy particles, such as X-rays and γ-rays, which will cause serious radiation damage to aerospace electronic components, ionizing radiation It is an important cause of spacecraft failure and failure. Although traditio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/08C22C1/05
Inventor 耿林范国华郑镇洙冯玉杰王桂松曹国剑
Owner HARBIN INST OF TECH