A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form

C. Qiuxiang, A.I. Isakov, L. Xiaodong, S.V. Krivovichev, B.E. Burakov

Research output

2 Citations (Scopus)

Abstract

© 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
Original languageEnglish
Title of host publicationA study of natural metamict yttrium niobate as analogue of actinide ceramic waste form
Pages313-318
DOIs
Publication statusPublished - 2014

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Actinoid Series Elements
Yttrium
Electron probe microanalysis
Annealing
Phase composition
X ray powder diffraction
Diffraction patterns
Minerals
Irradiation
Single crystals
Crystalline materials
X ray diffraction
X rays
Temperature
Scanning electron microscopy
Chemical analysis

Cite this

Qiuxiang, C., Isakov, A. I., Xiaodong, L., Krivovichev, S. V., & Burakov, B. E. (2014). A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form. In A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form (pp. 313-318) https://doi.org/10.1557/opl.2014.660
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. A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form. 2014. pp. 313-318
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Qiuxiang, C, Isakov, AI, Xiaodong, L, Krivovichev, SV & Burakov, BE 2014, A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form. in A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form. pp. 313-318. https://doi.org/10.1557/opl.2014.660

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

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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

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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

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DO - 10.1557/opl.2014.660

M3 - Conference contribution

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BT - A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form

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Qiuxiang C, Isakov AI, Xiaodong L, Krivovichev SV, Burakov BE. A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form. In A study of natural metamict yttrium niobate as analogue of actinide ceramic waste form. 2014. p. 313-318 https://doi.org/10.1557/opl.2014.660