Multiwalled boron nitride microtubes (BNMTs) shielding in thermal neutron absorbing

In this study, multiwalled boron nitride microtubes (BNMTs) were synthesised from amorphous boron powder in pure nitrogen atmosphere controlled graphite furnace at 1300°C for 6 h with amorphous boron/manganese (IV) oxide (MnO 2 ) catalyst mass ratio of 1/1. It was found that the synthesised BNMTs ou...

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Bibliographic Details
Published in:Radiation effects and defects in solids 2018-08, Vol.173 (7-8), p.555-566
Main Authors: Arslan, K., Seval, H. K., Murathan, Ö. F., Soysal, K.
Format: Article
Language:English
Subjects:
Boron
Boron nitride
boronising
Coating
Electron microscopes
Gamma rays
Iron 58
Irradiation
Manganese
Manganese dioxide
Medium carbon steels
Multiwalled BNMT
neutron absorbing
Nuclei (nuclear physics)
Radiation effects
Radiation shielding
Radiation sources
shielding
Surface layers
Thermal neutrons
Transport phenomena
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Summary:In this study, multiwalled boron nitride microtubes (BNMTs) were synthesised from amorphous boron powder in pure nitrogen atmosphere controlled graphite furnace at 1300°C for 6 h with amorphous boron/manganese (IV) oxide (MnO 2 ) catalyst mass ratio of 1/1. It was found that the synthesised BNMTs outer diameters and the lengths vary between 0.68 and 1.57 µm and between 6.79 and 31.23 µm, respectively, by the scanning electron microscope analysis. The surface layer of AISI 1040 steel material was coated with multiwalled BNMTs at 950°C for 4 h in a foundry furnace. Transport phenomena of BNMT molecules on surfaces of the steel were considered by diffusion. Neutrons from obtained 241 Am-Be source were irradiated on the 58 Fe nuclei. The irradiation properties of the without and with BNMT coated steel materials were studied in the field of gamma emitted by 60 Co. The radiation exposure rate of gamma radiation sources used at 1099 and 1291 keV, respectively. The higher peak area was obtained in steel coated with BNMT according to non-coated steel from irradiation results of samples. These results show that BNMT coated steel was more capable for radiation shielding.
ISSN:1042-0150
1029-4953
DOI:10.1080/10420150.2018.1484742