Metastable eutectic gas to solid condensation in the Al2O3–SiO2 system

Metastable eutectic gas to solid condensation in the Al2O3–SiO2 system
复制标题

Al2O3-SiO2 体系中亚稳态共晶气态凝结

DOI:
10.1063/1.478336
复制
发表时间:
1999
影响因子:
4.4
通讯作者:
J. Karner
J. Karner
中科院分区:
化学2区
文献类型:
--
作者:
F. Rietmeijer;J. Karner

文献摘要

被引文献

相似文献

分析和透射电子显微镜研究表明,在AlO-SiO蒸气中的非平衡气固冷凝产生固体单元,其具有在11.5wt%Al2O3和41- 47wt%Al2O3处的明确的组成峰。  这些峰与Al 2 O3-SiO2相图中的亚稳共晶点一致。热退火单元的组合物支持在0.15 - 0.60重量% Al 2 O3之间存在(亚稳)可熔性间隙。 分析中的重要发现是亚稳共晶在非平衡气固冷凝中的决定性作用。
An analytical and transmission electron microscope study showed that nonequilibrium gas-to-solid condensation in an AlO–SiO vapor yielded solid units with well defined compositional peaks at 11.5 wt % Al2O3 and 41–47 wt % Al2O3. These peaks coincide with metastable eutectic points in the Al2O3–SiO2 phase diagram. The compositions of thermally annealed units support the presence of a (metastable) miscibility gap between ∼15–∼60 wt % Al2O3. The important finding in this analysis is the determinative role of metastable eutectics in nonequilibrium gas-to-solid condensation.