TEM study on stability of Mg-doped γ-alumina fine particles
TEM study on stability of Mg-doped γ-alumina fine particles
复制标题
镁掺杂γ-氧化铝细粒稳定性的TEM研究
DOI：
10.2320/matertrans1989.39.110
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
H. Yanagida
中科院分区：
文献类型：
--
作者：
M. Kusunoki;Masumi Rokkaku;Y. Ikuhara;H. Yanagida
用蒸发法制备了含4at%镁的球形γ-Al 2 O3和纯γ-Al 2 O3。因此，将两种颗粒在真空中在1400°C下加热6小时。TEM观察表明，Mg掺杂的γ-Al 2 O3颗粒比纯γ-Al 2 O3颗粒稳定得多。主要根据高分辨电子显微镜和X射线能谱分析结果讨论了Mg原子对稳定性的影响。
Ultrafine spherical particles of γ-Al 2 O 3 containing 4 at% magnesium and pure γ-Al 2 O 3 were prepared by evaporating metal Al in air. Consequently, both particles were heated at 1400°C for 6 h in a vacuum. TEM observations showed that the Mg-doped γ-Al 2 O 3 particles were much more stable than the pure γ-Al 2 O 3 particles. The role of Mg atoms on the stability is discussed mainly based on the results obtained by high-resolution electron microscopy and energy dispersive X-ray spectroscopy.