Isothermal Sections and Primary Crystallization in the Quasiternary YO1.5-BaO-CuOx System at p(O2) = 0.21 × 105 Pa
✍ Scribed by G. Krabbes; W. Bieger; U. Wiesner; M. Ritschel; A. Teresiak
- Book ID
- 102602921
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 455 KB
- Volume
- 103
- Category
- Article
- ISSN
- 0022-4596
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✦ Synopsis
The phase relations along the sections (\mathrm{Y}{2} \mathrm{BaCuO}{5}-\mathrm{CuO}{x}) and (\mathrm{YBa}{2} \mathrm{Cu}{3} \mathrm{O}{7-5}-\mathrm{CuO}{x}) at temperatures between 900 and (1100^{\circ} \mathrm{C}) at (0.21 \times 10^{5} \mathrm{~Pa} \mathrm{O}{2}) pressure have been investigated by DTA/TG and soaking experiments. Peritectic reaction temperatures have been observed to be (960^{\circ} \mathrm{C}) and (940^{\circ} \mathrm{C}), respectively. The results have been combined with literature data to construct a consistent set of isothermal sections in the quasiternary (\mathrm{YO}{1,5}-\mathrm{BaO}-\mathrm{CuO}{y}) 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. (1993 Academic Press. Inc.