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Method for preparing 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, improve nuclear shielding effect, and improve The effect of the spray effect

Active Publication Date: 2020-04-07
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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  • Method for preparing high temperature corrosion-resistant Mg-Pb-Al-B nuclear shielding material
  • Method for preparing high temperature corrosion-resistant Mg-Pb-Al-B nuclear shielding material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0024] (1) will Bi 2 o 3 , V 2 o 5 , Y 2 o 3 After mixing evenly according to the mass ratio of 5:5:1, add it to a ball mill, and add acetone to it, after ball milling, drying, and sintering at 950°C for 2 hours, the mixed rare earth powder is obtained, wherein acetone and Bi 2 o 3 The volume to mass ratio is 1ml:4g;

[0025] (2) After mixing lead fluoride and barium fluoride according to the mass ratio of 49:35, after sintering in a vacuum environment, PbF 2 / BaF 2 Eutectic powder, when sintering, the temperature is 1080°C, and the sintering time is 30min;

[0026] (3) In parts by weight, 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, 1 part of PbF 2 / BaF 2 The eutectic powder is added to the ball mill, and afte...

Embodiment 2

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

[0031] (1) will Bi 2 o 3 , V 2 o 5 , Y 2 o 3 After mixing evenly according to the mass ratio of 8:9:1, add it to a ball mill, and add acetone to it, after ball milling, drying, and sintering at 970°C for 2.5 hours, the mixed rare earth powder is 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 according to the mass ratio of 49:35, after sintering in a vacuum environment, PbF 2 / BaF 2 Eutectic powder, when sintering, the temperature is 1080°C, and the sintering time is 35min;

[0033] (3) In parts by weight, 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, 3 parts of PbF 2 / BaF 2 The eutectic powder is added to the ball mill, and a...

Embodiment 3

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

[0038] (1) will Bi 2 o 3 , V 2 o 5 , Y 2 o 3 After mixing evenly according to the mass ratio of 10:10:1, add it to a ball mill, and add acetone to it, after ball milling, drying, and sintering at 980°C for 3 hours, the mixed rare earth powder is 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 according to the mass ratio of 49:35, after sintering in a vacuum environment, PbF2 / BaF 2 Eutectic powder, when sintering, the temperature is 1080°C, 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, 4 parts of PbF 2 / BaF 2 The eutectic powder is added to the ball mill, and aft...

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Abstract

The invention discloses a method for preparing a high temperature corrosion-resistant Mg-Pb-Al-B nuclear shielding material. The method includes the following operating steps that (1) Bi2O3, V2O5 andY2O3 are added into a ball grinding mill after being evenly mixed, acetone is further added, drying is performed after ball-milling treatment and mixed rare earth powder is obtained after sintering treatment; (2) after lead fluoride and barium fluoride are mixed, sintering treatment is conducted, and accordingly PbF2 / BaF2 eutectic powder is obtained; (3) magnesium powder, lead powder, aluminum powder, boron-containing intermediate alloy, the mixed rare earth powder and the PbF2 / BaF2 eutectic powder are added into the ball grinding mill, and spraying powder can be obtained after ball-milling treatment; and (4) after the spraying powder is sprayed onto the surface of a base body with a spray gun, the high temperature corrosion-resistant nuclear shielding material can be obtained. The nuclearshielding material prepared through the method not only has excellent nuclear shielding performance but also has splendid corrosion resistance in a high temperature environment, and the service lifeof the nuclear shielding material is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of nuclear shielding material preparation, and in particular relates to a preparation method of a high-temperature corrosion-resistant Mg-Pb-Al-B nuclear shielding material. Background technique [0002] When the nuclear reactor is running, the core will produce α, β, γ, X-rays and neutrons (n), protons (p), heavy hydrogen nuclei (d), fission product (FP) radiation, especially γ-rays and neutrons The penetrating power is strong, which 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 is used to contain the fission products and the fuel core. It is an important part of the working conditions, and if it is damaged, the entire circuit will be polluted, which may involve casualties. The nuclear shielding materials prepared in the prior art are extremely prone to corrosion in a high-temper...

Claims

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Application Information

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Patent Type & Authority Applications(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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