Preparation method of aluminum base gadolinium oxide neutron absorbing plate

A neutron absorbing plate and gadolinia-based technology, which is applied in the field of preparation of aluminum-based gadolinium oxide neutron absorbing plate, can solve problems such as poor neutron absorption performance, increased brittleness, and poor corrosion resistance

Active Publication Date: 2018-05-22
TAIYUAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0003] At present, most neutron shielding materials use boron-containing organic substances. These materials have the advantages of small size and light weight, but their corrosion resistance is poor and their life is short; metal cadmium plates can also be used as neutron absorbing materials, but they will be damaged in humid environments. Produces toxic substances and is not widely used; lead plate can slow d

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  • Preparation method of aluminum base gadolinium oxide neutron absorbing plate
  • Preparation method of aluminum base gadolinium oxide neutron absorbing plate
  • Preparation method of aluminum base gadolinium oxide neutron absorbing plate

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[0065] The present invention will be further explained below in conjunction with the drawings:

[0066] figure 1 Shown, it is the state diagram of the aluminum-based gadolinium oxide mixed fine powder. The opening and closing mold 1 is rectangular and consists of a first opening and closing frame 3, a second opening and closing frame 4, a third opening and closing frame 5, and a fourth opening and closing frame. 6 Assemble and fix, the inside of the open-close mold is the mold cavity 2, and the graphite spacer 7 is placed at the bottom of the mold cavity 2, and the upper part of the graphite spacer 7 is the first graphite paper 8, and the upper part of the first graphite paper 8 is aluminum Based on the gadolinium oxide mixed fine powder 9, the upper part of the aluminum-based gadolinium oxide mixed fine powder 9 is the second graphite paper 10, and the upper part of the second graphite paper 10 is the graphite compact 11.

[0067] figure 2 Shown is the rolling state diagram of th...

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Abstract

The invention relates to a preparation method of an aluminum base gadolinium oxide neutron absorbing plate. The compact aluminum base gadolinium oxide neutron absorbing plate is prepared to meet a protection requirement of neutron radiation shielding for a spent fuel storage rack of a nuclear power station, and is prepared with aluminum powder, gadolinium oxide powder and copper powder as raw materials after powder metallurgy is performed and rolling is performed. The neutron absorbing plate is silver white. The neutron absorption rate is 95%. The gadolinium oxide distributes uniformly. Particles are closely connected with a matrix. The tensile strength is 170MPa and the elongation is 12%. The preparation method is advanced and reasonable in technology and accurate and full in parameter, and is an advanced method for preparing the aluminum base gadolinium oxide neutron absorbing plate.

Description

technical field [0001] The invention relates to a method for preparing an aluminum-based gadolinium oxide neutron absorbing plate, which belongs to the technical field of preparation and application of nonferrous metal materials. Background technique [0002] There is strong neutron radiation in the spent fuel storage grid of nuclear power plants. With the development of nuclear power plants, the protection of neutron radiation has become an urgent problem to be solved; in order to prevent nuclear radiation, neutron absorbing materials and technologies are often used for shielding and protection, which puts extremely strict requirements on the performance of neutron absorbing materials. [0003] At present, most neutron shielding materials use boron-containing organic substances. These materials have the advantages of small size and light weight, but their corrosion resistance is poor and their life is short; metal cadmium plates can also be used as neutron absorbing materia...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C21/00C22C32/00
CPCB22F2998/10C22C1/05C22C21/00C22C32/0036B22F2009/043B22F3/02B22F3/1007B22F2201/20B22F2003/145B22F2003/1051B22F2003/247B22F3/18
Inventor 张鹏李靖王文先陈洪胜张宇阳刘瑞峰
Owner TAIYUAN UNIV OF TECH
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