Speaker
Ms
Samia LADJOUZI
(Centre de Recherche Nucléaire de Draria, BP.43 Sebala, Draria, Algiers 16000, Algeria)
Description
Abstract
Samples of GdBO3/Silica composite were prepared by the sol gel process. After elaboration, the samples were irradiated at room temperature with γ-rays using a cobalt (60Co) radioisotope source in the dose range from 1 to 5 kGy. The irradiation effects on the structural properties of the synthesized powders were investigated before and after γ-irradiation using several techniques. DSC analysis reveals that the characteristic temperature of crystallization (Tc) increases as γ dose increases up to 2 kGy and then, decreases with γ-ray dose up to 5 kGy but remains higher than the temperature reached by an un-irradiated sample. XRD and TEM results reveal that γ-ray irradiation reduces the crystallite size from 55 nm to 30 nm. Moreover, it is found from the FTIR study that the absorption bands intensity assigned to structural groups containing BO4 and BO3 units as well as the banding of Si–O–Si bond increases with γ-ray dose up to 5 kGy. From these results, it is concluded that the γ-ray irradiation up to a dose of 5 kGy improves the structural properties of the synthesized material.
Keywords: Sol gel, γ irradiation, composite, DSC, DRX, TEM, FTIR.
| Country/Organization invited to participate | Algeria |
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Primary author
Ms
Samia LADJOUZI
(Centre de Recherche Nucléaire de Draria, BP.43 Sebala, Draria, Algiers 16000, Algeria)
Co-authors
Mr
Lakdhar GUERBOUS
(Centre de Recherche Nucléaire d'Alger, BP.399, Alger-gare, Algiers 16000, Algeria)
Mr
Mahmoud Izerrouken
(Centre de Recherche Nucléaire de Draria, BP.43 Sebala, Draria, Algiers 16000, Algeria)
Ms
Razika TALA-EGHIL
(Institut of Electrical 2 Electronic Engineering, Boumerdes University, Algeria)
Mr
Said HADJI
(Centre de Recherche Nucléaire de Draria, BP.43 Sebala, Draria, Algiers 16000, Algeria)
