The elemental and ionic quantitative compositions and oxidation states of elements in the ceramics CaCe0.9Ti2O6.8 (I) and CaCeTi2O7 (II)-matrices for long-term storage of long-lived radionuclides constituting hi-h-level radioactive wastes-are studied by X-ray photoelectron spectroscopy. Compound I, obtained at a pressure of 300 MPa and T = 1400degreesC in air, has two types of surface cerium ions, 63 at. % Ce3+ and 37 at. % Ce4+; compound II, fabricated at a pressure of 300 MPa and T= 1300degreesC in an oxygen atmosphere, also has two types of surface ions, 36 at. % Ce3+ and 64 at. % Ce4+, which agrees satisfactorily with X-ray powder diffraction and scanning, electron microscopy data. On exposure to environmental conditions, calcium and/or cerium carbonates can form on the surface of the ceramics under consideration, which entails their failure.
Source:
Russian Journal of Inorganic Chemistry, 2004, 49, 1, 87-94
TY - JOUR
AU - Teterin, YA
AU - Stefanovskii, SV
AU - Yudintsev, SV
AU - Bek-Uzarov, GN
AU - Tetrerin, AY
AU - Maslakov, KI
AU - Utkin, IO
PY - 2004
UR - http://vinar.vin.bg.ac.rs/handle/123456789/2704
AB - The elemental and ionic quantitative compositions and oxidation states of elements in the ceramics CaCe0.9Ti2O6.8 (I) and CaCeTi2O7 (II)-matrices for long-term storage of long-lived radionuclides constituting hi-h-level radioactive wastes-are studied by X-ray photoelectron spectroscopy. Compound I, obtained at a pressure of 300 MPa and T = 1400degreesC in air, has two types of surface cerium ions, 63 at. % Ce3+ and 37 at. % Ce4+; compound II, fabricated at a pressure of 300 MPa and T= 1300degreesC in an oxygen atmosphere, also has two types of surface ions, 36 at. % Ce3+ and 64 at. % Ce4+, which agrees satisfactorily with X-ray powder diffraction and scanning, electron microscopy data. On exposure to environmental conditions, calcium and/or cerium carbonates can form on the surface of the ceramics under consideration, which entails their failure.
T2 - Russian Journal of Inorganic Chemistry
T1 - X-ray photoelectron study of calcium cerium titanate ceramics
VL - 49
IS - 1
SP - 87
EP - 94
ER -
@article{
author = "Teterin, YA and Stefanovskii, SV and Yudintsev, SV and Bek-Uzarov, GN and Tetrerin, AY and Maslakov, KI and Utkin, IO",
year = "2004",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/2704",
abstract = "The elemental and ionic quantitative compositions and oxidation states of elements in the ceramics CaCe0.9Ti2O6.8 (I) and CaCeTi2O7 (II)-matrices for long-term storage of long-lived radionuclides constituting hi-h-level radioactive wastes-are studied by X-ray photoelectron spectroscopy. Compound I, obtained at a pressure of 300 MPa and T = 1400degreesC in air, has two types of surface cerium ions, 63 at. % Ce3+ and 37 at. % Ce4+; compound II, fabricated at a pressure of 300 MPa and T= 1300degreesC in an oxygen atmosphere, also has two types of surface ions, 36 at. % Ce3+ and 64 at. % Ce4+, which agrees satisfactorily with X-ray powder diffraction and scanning, electron microscopy data. On exposure to environmental conditions, calcium and/or cerium carbonates can form on the surface of the ceramics under consideration, which entails their failure.",
journal = "Russian Journal of Inorganic Chemistry",
title = "X-ray photoelectron study of calcium cerium titanate ceramics",
volume = "49",
number = "1",
pages = "87-94"
}
Teterin Y, Stefanovskii S, Yudintsev S, Bek-Uzarov G, Tetrerin A, Maslakov K, Utkin I. X-ray photoelectron study of calcium cerium titanate ceramics. Russian Journal of Inorganic Chemistry. 2004;49(1):87-94
Teterin, Y., Stefanovskii, S., Yudintsev, S., Bek-Uzarov, G., Tetrerin, A., Maslakov, K.,& Utkin, I. (2004). X-ray photoelectron study of calcium cerium titanate ceramics.
Russian Journal of Inorganic Chemistry, 49(1), 87-94.
Teterin YA, Stefanovskii SV, Yudintsev SV, Bek-Uzarov GN, Tetrerin AY, Maslakov KI, Utkin IO, "X-ray photoelectron study of calcium cerium titanate ceramics" 49, no. 1 (2004):87-94
