Multiwalled boron nitride microtubes (BNMTs) shielding in thermal neutron absorbing
Küçük Resim Yok
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor & Francis Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, multiwalled boron nitride microtubes (BNMTs) were synthesised from amorphous boron powder in pure nitrogen atmosphere controlled graphite furnace at 1300 degrees C for 6h with amorphous boron/manganese (IV) oxide (MnO2) 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 mu m and between 6.79 and 31.23 mu m, respectively, by the scanning electron microscope analysis. The surface layer of AISI 1040 steel material was coated with multiwalled BNMTs at 950 degrees C for 4h in a foundry furnace. Transport phenomena of BNMT molecules on surfaces of the steel were considered by diffusion. Neutrons from obtained Am-241-Be source were irradiated on the Fe-58 nuclei. The irradiation properties of the without and with BNMT coated steel materials were studied in the field of gamma emitted by Co-60. The radiation exposure rate of gamma radiation sources used at 1099 and 1291keV, 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.
Açıklama
Anahtar Kelimeler
Multiwalled BNMT, shielding, irradiation, neutron absorbing, boronising
Kaynak
Radiation Effects and Defects in Solids
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
173
Sayı
7-8
