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Microstructural relationships between compounds in the Ti-Si-C system

机译:Ti-Si-C体系中化合物之间的微观结构关系

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摘要

Microstructural relationships between Ti_5Si_3 and TiC, and Ti_3SiC_2 and TiC are reported. Ti_5Si_3 and TiC were determined to share a coherent interface following a new set of orientation relationships, i.e., (1124)Ti_5Si_3||(110)TiC and [224 3]Ti_5Si_3||[110]TiC. Moreover, direct atomic resolution observation through Z-contrast scanning transmission electron microscopy showed that Ti_3SiC_2 nucleated within TiC. The close microstructural relationships between compounds in the Ti-Si-C system benefit the understandir of the reaction mechanism for the synthesis of Ti_3SiC_2.
机译:报道了Ti_5Si_3和TiC以及Ti_3SiC_2和TiC之间的微观结构关系。确定Ti_5Si_3和TiC遵循一组新的取向关系,即(1124)Ti_5Si_3 ||(110)TiC和[224 3] Ti_5Si_3 || [110] TiC,以共享相干界面。此外,通过Z-对比扫描透射电子显微镜的直接原子分辨率观察表明,Ti_3SiC_2在TiC内成核。 Ti-Si-C体系中化合物之间的紧密的微观结构关系有利于理解Ti_3SiC_2的合成反应机理。

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