期刊
JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION
卷 31, 期 4, 页码 348-356出版社
SPRINGER
DOI: 10.1007/s11669-010-9736-2
关键词
phase diagram; phase equilibria; solid solution; solubility limit; temperature; thermodynamics
资金
- New Energy and Industrial Technology Development Organization (NEDO) of Japan
- JSPS [202005]
Phase relationship of a BaO-ZrO2-YO1.5 system at 1500 and 1600 degrees C was examined in order to determine whether a phase separation at the composition of 15% yttrium-doped barium zirconate exists. According to a pseudoternary phase diagram of the BaO-ZrO2-YO1.5 system established by this work, the solubility of yttria into cubic barium zirconate at 1600 degrees C is 0.25 in a mole fraction of yttria (X-YO1.5). Thus, we confirmed that there is no phase separation at the composition of 15% yttrium-doped barium zirconate at 1600 degrees C. On the other hand, at 1500 degrees C, there might be a phase separation at the composition of 15% yttrium-doped barium zirconate into yttrium-doped barium zirconate where quite small amount of yttrium is doped and a new phase whose composition is close to reported BZ(II) phase.
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