期刊
MATERIALS LETTERS
卷 61, 期 3, 页码 779-784出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2006.05.060
关键词
ternary carbides; crystal growth; combustion synthesis
In Ti-Al-C system two ternary carbides of Ti2AlC and Ti3AlC2 were prepared by combustion synthesis. Laminated grain morphology and a terraced structure consisting of several parallel laminated layers were observed. On the basis of SEM and TEM results, a layered growth mechanism was proposed to describe the formation of the terraced structure. In this mechanism, the ternary carbide grains will undergo a preferential growth i.e. each layer grows fast and expands quickly in the basal plane and all the layers are successively stacked along the normal direction identical to the c-axis in the hexagonal structure. This preferential growth characterized by the terraced structure was widely observed in this study and hence may be a common behavior during the growth of Ti2AlC and Ti3AlC2 crystals in combustion synthesis. (c) 2006 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据