Isothermal sections and primary crystallization in the quasiternary YO[sub 1. 5]-BaO-CuO[sub x] system at p(O[sub 2]) = 0. 21 [times] 10[sup 5] Pa
- Institut fuer Festkoerper- und Werkstofforschung Dresden e.V. (Germany)
The phase relations along the sections Y[sub 2]BaCuO[sub 5]-CuO[sub x] and YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]-CuO[sub x] at temperatures between 900 and 1100[degrees]C at 0.21 [times] 10[sup 5] Pa O[sub 2] pressure have been investigated by DTA/TG and soaking experiments. Peritectic reaction temperatures have been observed to be 960[degrees]C and 940[degrees]C, respectively. The results have been combined with literature data to construct a consistent set of isothermal sections in the quasiternary YO[sub 1.5]-BaO-CuO[sub x] system. A precondition of this consideration is the occurrence of only one type of melt which expands over wide ranges of the triangle as the temperature increases. The primary crystallization fields of solid phases have been derived. 35 refs., 6 figs., 3 tabs.
- OSTI ID:
- 6050587
- Journal Information:
- Journal of Solid State Chemistry; (United States), Journal Name: Journal of Solid State Chemistry; (United States) Vol. 103:2; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALLIZATION
DIFFERENTIAL THERMAL ANALYSIS
GRAVIMETRIC ANALYSIS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHASE TRANSFORMATIONS
QUANTITATIVE CHEMICAL ANALYSIS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES