Abstract
| Original language | English |
|---|---|
| Title of host publication | A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form |
| Pages | 313-318 |
| DOIs | |
| Publication status | Published - 2014 |
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A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form. / Qiuxiang, C.; Isakov, A.I.; Xiaodong, L.; Krivovichev, S.V.; Burakov, B.E.
A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form. 2014. p. 313-318.Research output
TY - GEN
T1 - A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form
AU - Qiuxiang, C.
AU - Isakov, A.I.
AU - Xiaodong, L.
AU - Krivovichev, S.V.
AU - Burakov, B.E.
PY - 2014
Y1 - 2014
N2 - © 2014 Materials Research Society. Natural metamict mineral found as large (1-3 cm in size) homogeneous grains (as assumed, former single crystals), was investigated by X-ray powder diffraction (pXRD), high-temperature pXRD, scanning electron microscopy (SEM) and electron microprobe analysis (EMPA). The average chemical composition obtained by EMPA is (wt. %): Nb2O5 - 42.6; Ta2O5 - 4.4; TiO2 - 9.2; UO3 - 4.4; ThO2 - 1.0; MnO - 1.3; FeO - 19.4; Y2O3 - 16.6. The untreated (original) sample is X-ray amorphous. The sample remained amorphous after annealing at 400 °C for 1 hour. The sample became almost fully crystalline after annealing at 700 °C for 1 hour with an X-ray diffraction pattern similar to that of Fe-columbite (ICCD: 01 074-7356). Further annealing at 1000 °C and higher temperatures caused changes in the phase composition of the sample. It was proposed that under self-irradiation a single-phase U-Th-beari
AB - © 2014 Materials Research Society. Natural metamict mineral found as large (1-3 cm in size) homogeneous grains (as assumed, former single crystals), was investigated by X-ray powder diffraction (pXRD), high-temperature pXRD, scanning electron microscopy (SEM) and electron microprobe analysis (EMPA). The average chemical composition obtained by EMPA is (wt. %): Nb2O5 - 42.6; Ta2O5 - 4.4; TiO2 - 9.2; UO3 - 4.4; ThO2 - 1.0; MnO - 1.3; FeO - 19.4; Y2O3 - 16.6. The untreated (original) sample is X-ray amorphous. The sample remained amorphous after annealing at 400 °C for 1 hour. The sample became almost fully crystalline after annealing at 700 °C for 1 hour with an X-ray diffraction pattern similar to that of Fe-columbite (ICCD: 01 074-7356). Further annealing at 1000 °C and higher temperatures caused changes in the phase composition of the sample. It was proposed that under self-irradiation a single-phase U-Th-beari
U2 - 10.1557/opl.2014.660
DO - 10.1557/opl.2014.660
M3 - Conference contribution
SN - 9781605116426
SP - 313
EP - 318
BT - A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form
ER -