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

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Key Engineering Materials (Volumes 264-268)

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Edited by:

Hasan Mandal and Lütfi Öveçoglu

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1051-1054

DOI:

10.4028/www.scientific.net/KEM.264-268.1051

Citation:

K. Mwamba et al., "Phase Relationships in the UO2- BaO-ZrO2-MoOx System", Key Engineering Materials, Vols. 264-268, pp. 1051-1054, 2004

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May 2004

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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.

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