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HomeKey Engineering MaterialsKey Engineering Materials Vols. 264-268Phase Relationships in the UO2- BaO-ZrO2-MoOx...

Phase Relationships in the UO₂- BaO-ZrO₂-MoO_x System

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Euro Ceramics VIII

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Periodical:

Key Engineering Materials (Volumes 264-268)

Pages:

1051-1054

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.264-268.1051

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Online since:

May 2004

Authors:

K. Mwamba, M. Verwerft, Paul-Henri Duvigneaud

Keywords:

Oxygen Potential, Phase Diagram, UO₂- BaO-ZrO₂-MoO_x System, UO₂ Fission

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© 2004 Trans Tech Publications Ltd. All Rights Reserved

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[2] K. Mwamba & P.H. Duvigneaud, Proc. Euroceramics 7, Bruges, 9-13 sept. 2001, 791-794.

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[6] E.H.P. Cordfunke & D.J.W. Ijdo, J. Phys. Chem. Solids, 49, (1988).

10 20 30 40 50 60 70 80 90 100 BaO.

[10] [20] [30] [40] [50] [60] [70] [80] [90] 100 ZrO2.

[10] [20] [30] [40] [50] [60] [70] [80] [90] 100 Ba3MoO6 BaMoO3 BaZrO3 Ba3Zr2O7 Ba2ZrO4 A E G B Bm C D F Bmz BaZrO3ss+(ZrO2ss)+Mo+UO2ss BaZrO3ss+ Mo+UO2ss Mo+UO2ss ZrO2ss+UO 2ss BaZrO3ss+UO2ss BaUO3ss+UO2ss BaUO 3ss+ Mo+UO2ss pO2=10 -16 atm ; 1600°C MoOx (x=0).

10 20 30 40 50 60 70 80 90 100 BaO.

[10] [20] [30] [40] [50] [60] [70] [80] [90] 100 ZrO2.

[10] [20] [30] [40] [50] [60] [70] [80] [90] 100 Ba3MoO6 BaMoO3 BaZrO3 Ba3Zr2O7 Ba2ZrO4 A E G B Bm C D F Bmz BaZrO3ss+(ZrO2ss)+Mo+UO2ss BaZrO3ss+ Mo+UO2ss Mo+UO2ss ZrO2ss+UO2ss BaZrO3ss+UO2ss BaUO3ss+UO2ss BaUO3ss+ Mo+UO2ss pO2=10-16 atm ; 1600°C MoOx (x=2).

10 20 30 40 50 60 70 80 90 100 BaO.

[10] [20] [30] [40] [50] [60] [70] [80] [90] 100 ZrO2.

[10] [20] [30] [40] [50] [60] [70] [80] [90] 100 Ba3MoO6 Ba2MoO5 BaMoO4 BaMo2O7 BaZrO3 Ba3Zr2O7 Ba2ZrO4 Zr(MoO4)2 E F A G B Bm C D Bmz BaMoO4ss+MoO2ss+UO2ss BaMoO4ss+(ZrO2ss)+MoO2ss+UO2ss ZrO2ss+UO2ss BaMoO4ss+ZrO2ss+UO2ss BaMoO4ss+(BaZrO3ss)+Ba2(U, Zr)3O9+x+UO2ss BaZrO3ss+UO2ss BaZrO3ss+Ba2(U, Zr)3O9+x+UO2ss Ba2(U, Zr)3O9+x+UO2ss BaMoO4ss+Ba2(U, Zr)3O9+x+UO2ss BaMoO4ss+UO2ss pO2 10 -9 atm ; 1600°C.