Reaction synthesis of layered ternary Ti2AlC ceramic
Reaction synthesis of layered ternary Ti2AlC ceramic
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DOI：
10.1016/j.jeurceramsoc.2008.05.039
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发表时间：
2009
影响因子：
5.7
通讯作者：
V. Gauthier-Brunet;T. Cabioc’h;P. Chartier;M. Jaouen;S. Dubois
中科院分区：
文献类型：
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作者：
V. Gauthier-Brunet;T. Cabioc’h;P. Chartier;M. Jaouen;S. Dubois
在570-1400℃温度范围内，研究了8Ti：Al4C3：C混合粉末反应烧结形成Ti2AlC三元碳化物的过程。在1400℃烧结1h后，只生成最大相Ti2AlC和部分TiC。在反应烧结过程中发现了TiC、Ti3Al、Ti3AlC等一系列中间相。从X射线衍射和扫描电子显微镜的表征，提出了中间相和Ti2AlC形成的反应途径。结果表明，反应动力学对理解反应机理有重要意义。
Reactive sintering of 8Ti:Al4C3:C powder mixtures to form the ternary carbide Ti2AlC is studied in the temperature range 570–1400°C. After sintering at 1400°C for 1h, only the MAX phase Ti2AlC and some TiC are produced. A series of intermediate phases, such as TiC, Ti3Al, Ti3AlC are detected during the reactive sintering process. From X-ray diffraction (XRD) and scanning electron microscopy (SEM) characterizations, a reaction path is proposed for the intermediate phases and Ti2AlC formation. Results show that reaction kinetics may play an important role in the understanding of the reaction mechanisms.