THE YB2O3-BAO(BACO3)-CUO AND LU2O3-BAO(BACO3)-CUO SYSTEMS - COMPOUNDS AND PHASE COMPATIBILITIES IN AIR AT 940-980-DEGREES-C

被引：27
作者：
HODOROWICZ, E
HODOROWICZ, SA
EICK, HA
机构：
[1] MICHIGAN STATE UNIV,DEPT CHEM,E LANSING,MI 48824
[2] MICHIGAN STATE UNIV,CTR FUNDAMENTAL MAT RES,E LANSING,MI 48824
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1992年 / 181卷 / 1-2期
关键词：
D O I：
10.1016/0925-8388(92)90339-B
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Phase compatibilities in air at around 950-degrees-C are presented for the systems Ln2O3-BaCO3-CuO, Ln = Yb and Lu, as a function of cation molar ratios. The Lu- "123" oxide could not be synthesized. Seven Ln:Ba:Cu phases were preparable in air in the range 940-980-degrees-C: 011, BaCuO2; 202, Ln2Cu2O5; 220, Ln2Ba2O5; 240, Ln2Ba4O7; 211, Ln2BaCuO5; 123, only for YbBa2Cu3Ox; and 132, 'LnBa3Cu2Oy'. In the BaO-rich region, phase compatibilities change above 950-degrees-C when the '220' phase converts into the '240' phase.
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页码：445 / 455
页数：11
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