Thermal-neutron shielding material and producing method thereof

Abstract

The invention is concerned with the shielding material and the preparation method for the thermal neutron, it is: uses the plasma spray, the detonation spray or the solid boronization processing to establish the appropriate craft parameter, sprays boron carbide layer or the compound of FeB and Fe2B on the surface of steels that can get the shielding layer with different boron quantity from the base surface, uses different craft to adjust the spraying layer and the thickness of the seeping layer in order to achieve the request of industry according to the need to select the fitful thickness steel. The invention is with better shielding effect.

Description

technical field [0001] The invention relates to a thermal neutron shielding material, which belongs to the field of radiation protection. Background technique [0002] With the development of science, the use of radioactive substances is becoming more and more extensive. Existing thermal neutron shielding materials are generally made of polyethylene, polypropylene, polyoxyethylene, polyurethane and other polymers mixed with neutron shielding materials. The production process of this shielding material is cumbersome, the use temperature range is narrow, and the melting point is low , It softens at about 150°C, becomes hard and brittle below 0°C, is not resistant to impact and vibration, and cannot fully meet the use requirements. Another shielding material, boron steel (0.1-0.6% boron content), has high production cost, high brittleness, unsatisfactory shielding effect, and is not widely used in the field of radiation protection technology. Contents of the invention [00...

AI Technical Summary

Problems solved by technology

Existing thermal neutron shielding materials are generally made of polyethylene, polypropylene, polyoxyethylene, polyurethane and other polymers mixed with neutron shielding materials. The production process of this shielding material is cumbersome, the use temperature range is narrow, and the melting point is low , It softens at about 150°C, becomes hard and brittle below 0°C, is not resistant to impact and vibration, and cannot fully meet the use requirements

Another shielding material, boron steel (0.1-0.6% boron content), has high production cost, high brittleness, unsatisfactory shielding effect, and is not widely used in the field of radiation protection technology.