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A kind of preparation method of high temperature corrosion resistant mg-pb-al-b nuclear shielding material

A mg-pb-al-b, high-temperature corrosion-resistant technology, applied in shielding, metal material coating technology, nuclear engineering, etc., can solve problems such as prone to corrosion, achieve enhanced absorption effect, excellent corrosion resistance, and improve Effect of nuclear shielding effect

Active Publication Date: 2022-05-24
YANGZHOUSRKLE INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nuclear shielding materials prepared in the prior art are extremely prone to corrosion in high temperature environments

Method used

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  • A kind of preparation method of high temperature corrosion resistant mg-pb-al-b nuclear shielding material
  • A kind of preparation method of high temperature corrosion resistant mg-pb-al-b nuclear shielding material

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Experimental program
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Effect test

Embodiment 1

[0023] A preparation method of a high-temperature corrosion-resistant Mg-Pb-Al-B nuclear shielding material, comprising the following operation steps:

[0024] (1) Put Bi 2 O 3 , V 2 O 5 , Y 2 O 3 After mixing evenly at a mass ratio of 5:5:1, add it to a ball mill, add acetone to it, ball mill, dry it, and sinter at 950°C for 2 hours to obtain mixed rare earth powder, in which acetone and Bi 2 O 3 The volume-to-mass ratio is 1ml:4g,;

[0025] (2) After mixing lead fluoride and barium fluoride in a mass ratio of 49:35, and sintering in a vacuum environment, PbF is obtained 2 / BaF 2 For eutectic powder, during sintering treatment, the temperature is 1080℃, and the sintering treatment time is 30min;

[0026] (3) In parts by weight, combine 38 parts of magnesium powder, 11 parts of lead powder, 25 parts of aluminum powder, 19 parts of boron-containing master alloy, 2 parts of mixed rare earth powder, and 1 part of PbF 2 / BaF 2 The eutectic powder is added to the ball mi...

Embodiment 2

[0030] A preparation method of a high-temperature corrosion-resistant Mg-Pb-Al-B nuclear shielding material, comprising the following operation steps:

[0031] (1) Put Bi 2 O 3 , V 2 O 5 , Y 2 O 3 After mixing uniformly at a mass ratio of 8:9:1, it was added to a ball mill, and acetone was added to it. After ball milling, drying, and sintering at 970°C for 2.5 hours, mixed rare earth powder was obtained, wherein acetone and Bi 2 O 3 The volume to mass ratio is 1ml:5g,;

[0032] (2) After mixing lead fluoride and barium fluoride in a mass ratio of 49:35, and sintering in a vacuum environment, PbF is obtained 2 / BaF 2 Eutectic powder, when sintering, the temperature is 1080℃, and the sintering time is 35min;

[0033] (3) In parts by weight, combine 42 parts of magnesium powder, 13 parts of lead powder, 28 parts of aluminum powder, 21 parts of boron-containing master alloy, 4 parts of mixed rare earth powder, and 3 parts of PbF 2 / BaF 2 The eutectic powder is added to ...

Embodiment 3

[0037] A preparation method of a high-temperature corrosion-resistant Mg-Pb-Al-B nuclear shielding material, comprising the following operation steps:

[0038] (1) Put Bi 2 O 3 , V 2 O 5 , Y 2 O 3 After mixing uniformly at a mass ratio of 10:10:1, it was added to a ball mill, and acetone was added to it. After ball milling, drying, and sintering at 980°C for 3 hours, mixed rare earth powder was obtained, wherein acetone and Bi 2 O 3 The volume to mass ratio is 1ml:6g,;

[0039] (2) After mixing lead fluoride and barium fluoride in a mass ratio of 49:35, and sintering in a vacuum environment, PbF is obtained2 / BaF 2 Eutectic powder, when sintering, the temperature is 1080℃, and the sintering time is 40min;

[0040] (3) In parts by weight, 45 parts of magnesium powder, 16 parts of lead powder, 30 parts of aluminum powder, 24 parts of boron-containing master alloy, 6 parts of mixed rare earth powder, and 4 parts of PbF 2 / BaF 2 The eutectic powder is added to the ball m...

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Abstract

The invention discloses a method for preparing a high-temperature corrosion-resistant Mg-Pb-Al-B nuclear shielding material, comprising the following steps: (1) adding Bi 2 o 3 , V 2 o 5 , Y 2 o 3 After mixing evenly, add it to a ball mill, and add acetone to it, after ball milling, drying, and sintering to obtain mixed rare earth powder; (2) Mix lead fluoride and barium fluoride and sinter to obtain PbF 2 / BaF 2 Eutectic powder; (3) Magnesium powder, lead powder, aluminum powder, boron-containing master alloy, mixed rare earth powder, PbF 2 / BaF 2 The eutectic powder is added into a ball mill, and after ball milling, a spray powder is obtained; (4) After the spray powder is sprayed on the surface of the substrate with a spray gun, a high-temperature corrosion-resistant nuclear shielding material is obtained. The nuclear shielding material prepared by the method of the invention not only has excellent nuclear shielding performance, but also has excellent corrosion resistance in a high-temperature environment, which greatly prolongs the service life of the nuclear shielding material.

Description

technical field [0001] The invention belongs to the technical field of preparation of nuclear shielding materials, in particular to a preparation method of a high-temperature corrosion-resistant Mg-Pb-Al-B nuclear shielding material. Background technique [0002] When a nuclear reactor is operating, the core will generate α, β, γ, X-rays, and neutron (n), proton (p), heavy hydrogen (d), and fission products (FP) radiation, especially γ-rays and neutrons. It has strong penetrating power and can cause radiation damage to surrounding objects and personnel. In a nuclear reactor, the core of the nuclear fission source is the fuel element, and the shielding material serves as the containment of the fission products and the fuel core. While it is subjected to high temperature, high pressure and strong neutron irradiation, it is also subjected to the pressure generated by the decaying candle, fission gas, and fuel. Various hazards such as the swelling of the tube and its interactio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/06C23C4/129C22C30/04C22C32/00G21F1/08
CPCC23C4/06C23C4/129C22C30/04C22C32/0005G21F1/08
Inventor 陈淑萍
Owner YANGZHOUSRKLE INDAL
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