Phase evaluation during high temperature long heat treatments in the Y2O3-Al2O3-SiO2 system
Phase evaluation during high temperature long heat treatments in the Y2O3-Al2O3-SiO2 system
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DOI：
10.1016/j.jeurceramsoc.2014.05.025
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发表时间：
2014-12
影响因子：
5.7
通讯作者：
S. Ahmad;T. Ludwig;M. Herrmann;M. Mahmoud;W. Lippmann;H. Seifert
中科院分区：
文献类型：
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作者：
S. Ahmad;T. Ludwig;M. Herrmann;M. Mahmoud;W. Lippmann;H. Seifert
研究了高温长时间热处理对Y_2O_3-Al_2O_3-SiO_2系统共晶玻璃显微结构的影响。采用扫描电镜结合能谱分析和电子探针对样品进行了定性和定量相分析。同时进行了热分析，以确定的转变温度和结晶度。这些玻璃的析晶行为进行了监测与X射线粉末衍射。在1350 °C下长时间热处理后，在该共晶组合物的结构中观察到针状X相。
The effect of high temperature long heat treatments on the microstructure of the eutectic glass composition in the Y2O3–Al2O3–SiO2system was examined. The qualitative and quantitative phase analyses were conducted by using scanning electron microscopy combined with energy dispersive analysis and electron microprobe. Simultaneous thermal analyses were carried out to determine the transition temperatures and enthalpies. The crystallization behavior of these glasses was monitored with X-ray powder diffraction. A needle like X-phase was observed in the structure of this eutectic composition after long heat treatment at 1350 °C.