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Titolo:
Thermal expansion and solubility limits of plutonium-doped lanthanum zirconates
Autore:
Yamazaki, S; Yamashita, T; Matsui, T; Nagasaki, T;
Indirizzi:
Nagoya Univ, Grad Sch Engn, Dept Quantum Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan Nagoya Univ Nagoya Aichi Japan 4648603 a Ku, Nagoya, Aichi 4648603, Japan Japan Atom Energy Res Inst, Dept Mat Sci, Tokai, Ibaraki 3191195, Japan Japan Atom Energy Res Inst Tokai Ibaraki Japan 3191195 aki 3191195, Japan
Titolo Testata:
JOURNAL OF NUCLEAR MATERIALS
fascicolo: 1-2, volume: 294, anno: 2001,
pagine: 183 - 187
SICI:
0022-3115(200104)294:1-2<183:TEASLO>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
OXIDE PYROCHLORES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Matsui, T Nagoya Univ, Grad Sch Engn, Dept Quantum Engn, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648603, Japan Nagoya Univ Furo Cho Nagoya Aichi Japan 4648603 i 4648603, Japan
Citazione:
S. Yamazaki et al., "Thermal expansion and solubility limits of plutonium-doped lanthanum zirconates", J NUCL MAT, 294(1-2), 2001, pp. 183-187

Abstract

Plutonium-doped and undoped lanthanum zirconates were prepared by solid state reaction. The solubility limit of Pu in La2Zr2O7 was studied by X-ray diffraction, and the solubility limits of Pu in pyrochlore-type phase prepared in air, vacuum and Ar-8%H-2 atmospheres were determined to be 10, 35 and100 mol%, respectively. The compound with 80 mol% Pu prepared in air and the compounds with 80 and 100 mol% Pu prepared in vacuum showed single fluorite-type phases. Thermal expansion coefficients of (La1-xPux)(2)Zr2O7+y (x = 0, 0.05, 0.10 and 0.80) were also measured by high-temperature X-ray diffraction at temperatures between room temperature and 1273 K in air and He-8%H-2 atmospheres and were found to increase with increasing Pu content. Thedependence of the linear thermal expansion coefficients on Pu content is discussed from the point of view of the radii of both tetravalent Pu in air and trivalent Pu in He-8%H2. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 00:05:16