TY - JOUR
T1 - Alpha-particle irradiation effects on uranium-bearing Gd2Zr2O7 ceramics for nuclear waste forms
AU - Shu, Xiaoyan
AU - Fan, Long
AU - Xie, Yi
AU - Zhu, Weidong
AU - Pan, Sheqi
AU - Ding, Yi
AU - Chi, Fangting
AU - Wu, Yanlin
AU - Lu, Xirui
N1 - Funding Information:
The authors would like to thank financial supports from the National Natural Science Foundation of China (No. 41302028 , 21507105 ), China Postdoctoral Science Foundation Funded Project (No. 2014M552384 ), Key Project of Sichuan Education Department (No. 14ZA0099 , 15ZB0116 ), Foundation of Laboratory of National Defense Key Discipline for Nuclear Waste and Environmental Safety , Southwest University of Science and Technology (No. 15yyhk10 ), and the Doctor Foundation in Southwest University of Science and Technology (No. 14zx7168 ).
Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2017/2/1
Y1 - 2017/2/1
N2 - It is necessary to study the self-irradiation effects of nuclear waste forms under α-decay in the long term storage. In the present work, accelerated irradiation experiments were performed on (Gd1-4xU2x)2(Zr1-xUx)2O7 (x = 0, 0.10, 0.14) samples using 0.5 MeV alpha-particle irradiation at fluences ranging from 1 × 1014 to 1 × 1017 ions/cm2 at room temperature. Irradiation induced microstructural evolution was examined by grazing incidence X-ray diffraction (GIXRD), Raman spectroscopy and Field-emission scanning electron microscopy (FESEM). The results show that the main crystal structure is kept, however, weaker structural ordering is leaded as a result of intensified irradiation. And the radiation resistance is enhanced by the growing uranium content in the discussed range. Moreover, the irradiation effects as a function of depth have been discussed. Raman spectra reveal that the vibration intensity of atomic bonds are changed due to increased irradiation. In addition, the microtopography and element distribution have been kept after irradiation.
AB - It is necessary to study the self-irradiation effects of nuclear waste forms under α-decay in the long term storage. In the present work, accelerated irradiation experiments were performed on (Gd1-4xU2x)2(Zr1-xUx)2O7 (x = 0, 0.10, 0.14) samples using 0.5 MeV alpha-particle irradiation at fluences ranging from 1 × 1014 to 1 × 1017 ions/cm2 at room temperature. Irradiation induced microstructural evolution was examined by grazing incidence X-ray diffraction (GIXRD), Raman spectroscopy and Field-emission scanning electron microscopy (FESEM). The results show that the main crystal structure is kept, however, weaker structural ordering is leaded as a result of intensified irradiation. And the radiation resistance is enhanced by the growing uranium content in the discussed range. Moreover, the irradiation effects as a function of depth have been discussed. Raman spectra reveal that the vibration intensity of atomic bonds are changed due to increased irradiation. In addition, the microtopography and element distribution have been kept after irradiation.
KW - GdZrO
KW - Ion irradiation
KW - Uranium
KW - Waste forms
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U2 - 10.1016/j.jeurceramsoc.2016.09.034
DO - 10.1016/j.jeurceramsoc.2016.09.034
M3 - Article
AN - SCOPUS:84992195756
SN - 0955-2219
VL - 37
SP - 779
EP - 785
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 2
ER -