Reactions in the sintering of MgAl2O4 spinel doped with LiF

被引：23
|
作者：
Reimanis, Ivar E. [1 ]
Kleebe, Hans-Joachim [2 ]
机构：
[1] Metallurgical and Materials Engineering, Colorado School of Mines, Golden,CO,80403, United States
[2] Institut Für Angewandte Geowissenschaften, Geomaterialwissenschaft, Technische Universität Darmstadt, Darmstadt, Germany
来源：
Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques | 2007年 / 98卷 / 12期
关键词：
Magnesium compounds - Temperature - Fluorine compounds - Oxygen vacancies - Lithium compounds - Sodium Aluminate - High resolution transmission electron microscopy;
D O I：
10.3139/146.101591
中图分类号：
学科分类号：
摘要：
Reactions between MgAl2O4 and LiF during low-temperature sintering have been examined by transmission electron microscopy. It is shown that the presence of LiF at elevated temperatures leads to the formation of a defect MgAl2O4 spinel phase containing oxygen vacancies due to the incorporation of both Li and F ions into the crystal lattice. Consequently, densification is promoted via the diffusion of oxygen vacancies. Note that neither of the lithium aluminate phases, LiAlO2 and Li2Al4O7, were detected.
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页码：1273 / 1278
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