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Novel high-density neutron absorption plate

A neutron absorbing plate, high-density technology, applied in the direction of nuclear power generation, climate sustainability, nuclear reaction control, etc., can solve the problems affecting the quality of the absorbing plate, aluminum alloy shell deformation, strength reduction, etc., to achieve stable performance , high density, low equipment requirements

Active Publication Date: 2014-07-30
HAILONG EMERSON ZHENJIANG ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The high-density neutron absorbing plate in the prior art includes an aluminum alloy shell, and the shell is provided with B 4 The plate body made of sintered C particles, the absorbing plate of this structure, due to the processing of B 4 C particles are put into the aluminum alloy shell and sintered. During processing, the aluminum alloy shell is easily deformed due to high temperature, thus affecting the quality of the absorbing plate and reducing its strength.

Method used

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  • Novel high-density neutron absorption plate

Examples

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Effect test

Embodiment 1

[0019] A new type of high-density neutron absorbing plate, comprising an aluminum alloy shell 1, the shell 1 is provided with a plate body 2 formed by sintering an aluminum-based composite material, and 80 parts of Al alloy powder with a particle size of 10 μm, Mix 70 parts of boron carbide powder with a particle size of 50 μm, 10 parts of ceramic micropowder, 15 parts of hollow glass microspheres, 10 parts of shrimp shellfish, 5 parts of sericite particles, and 15 parts of bentonite in a mixer; then put the mixed powder into Encapsulate in an aluminum alloy box with an aluminum alloy frame; vacuum degassing and sintering: put the aluminum alloy box encapsulating the mixed powder blank in a vacuum degree of 10 -3 Vacuum degassing and sintering in a vacuum furnace of Pa; 10% in each pass, when the density of the billet is 70% TD, the rolling is reversed at 90°, and the aluminum alloy cladding on the outer layer of the billet is removed, and then multi-pass hot rolling is carrie...

Embodiment 2

[0022] A new type of high-density neutron absorbing plate, comprising an aluminum alloy shell 1, the shell 1 is provided with a plate body 2 formed by sintering an aluminum-based composite material, and 80 parts of Al alloy powder with a particle size of 15 μm, The particle size is 60μm, 75 parts of boron carbide powder, 20 parts of ceramic micropowder, 20 parts of hollow glass microspheres, 15 parts of shrimp shellfish, 10 parts of sericite particles, and 25 parts of bentonite are mixed evenly in the mixer; reloading: the same as the implementation Example 1: Vacuum degassing and sintering: Put the aluminum alloy box with the mixed powder blank in a vacuum of 10 -3 Vacuum degassing sintering in a vacuum furnace of Pa; 10% per pass, when the density of the billet is 85% TD, the rolling is reversed at 90°, and the aluminum alloy cladding on the outer layer of the billet is removed, and then multi-pass hot rolling is carried out, and the reduction is 35%. Plate rolled to a thic...

Embodiment 3

[0025] A new type of high-density neutron absorbing plate, including an aluminum alloy shell 1, the shell 1 is provided with a plate body 2 formed by sintering aluminum matrix composite materials, and the materials are first mixed during preparation: Al alloy with a particle size of 25 μm 95 parts of boron carbide powder, 75 parts of boron carbide powder with a particle size of 60 μm, 20 parts of ceramic micropowder, 20 parts of hollow glass microspheres, 15 parts of shrimp shellin, 10 parts of sericite particles, and 25 parts of bentonite are mixed evenly in a mixer; Material: the same as in Example 1; vacuum degassing and sintering: put the aluminum alloy box packaged with the mixed powder blank in a vacuum furnace with a vacuum degree of 10-3Pa for vacuum degassing and sintering; the sintering temperature is 480°C, and the sintering time is 15 hours; re-hot rolling and peeling: the sintered aluminum alloy box is continuously hot-rolled at 540 °C for multiple passes, and the ...

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Abstract

The invention discloses a novel high-density neutron absorption plate which comprises an aluminum alloy shell, wherein the aluminum alloy shell is internally provided with a plate body formed by sintering an aluminum-base composite material; the aluminum-base composite material comprises Al alloy powder, boron carbide powder, ceramic micropowder, hollow glass microspheres, astaxanthin, sericite granules and bentonite. The novel high-density neutron absorption plate disclosed by the invention does not need a large-sized press and a large-sized extruder when being prepared and is relatively simple in process and not high in equipment requirement; the prepared B4C-Al neutron absorption material is a homogeneous material, has the advantages of high density and stability in usage property, has the density more than 98%, can be used as a criticality safety control neutron absorption material of a spent fuel storage facility and can be used for the dense storage of flammable fuel.

Description

technical field [0001] The invention relates to a high-density neutron absorbing plate. Background technique [0002] The boron carbide aluminum metal matrix composite material plate is composed of boron carbide uniformly dispersed in the aluminum alloy matrix, wherein the boron carbide is the dispersion strengthening phase, and the aluminum alloy is the matrix phase. This material contains B element with good neutron absorbing properties and can be used as a neutron absorbing material. Its notable advantages are corrosion resistance, radiation resistance, high boron content, long service life, and can improve the economy and safety of spent fuel storage and transportation. [0003] The high-density neutron absorbing plate in the prior art includes an aluminum alloy shell, and the shell is provided with B 4 The plate body made of sintered C particles, the absorbing plate of this structure, due to the processing of B 4 The C particles are sintered in an aluminum...

Claims

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Application Information

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IPC IPC(8): G21C7/24B22F1/00
CPCY02E30/30
Inventor 张中武
Owner HAILONG EMERSON ZHENJIANG ENERGY TECH