Synthesis of ternary machinable Al2O3/Ti3AlC2 ceramic by high energy milling and hot-pressing

被引：0
|
作者：
Liu B.-B. [1 ]
Wang F. [1 ]
Zhu J.-F. [1 ,2 ]
Li Y.-L. [2 ]
Cui X.-Y. [1 ]
机构：
[1] School of Materials Science and Engineering, Shanxi University of Science and Technology
[2] Xi'an Jiaotong University
来源：
Hangkong Cailiao Xuebao/Journal of Aeronautical Materials | 2010年 / 30卷 / 03期
关键词：
Al[!sub]2[!/sub]O[!sub]3[!/sub]/Ti[!sub]3[!/sub]Al C[!sub]2[!/sub; Composites; Hot pressing; Microstructure machinability;
D O I：
10.3969/j.issn.1005-5053.2010.3.007
中图分类号：
学科分类号：
摘要：
Al2O3/Ti3AlC2 composites was synthesized by high energy milling and hot-pressing using Ti, Al and C powders as raw materials. That is in the process of synthesis Ti3AlC2 layered material the composites were synthesized. The effects of sintering temperature on reactions, the microstructure and reaction of mechanism were investigated based on the analysis of XRD, EDS and SEM. The results show that Al2O3/Ti3AlC2 composites was successfully obtained by hot-pressed at 1200°C. The synthesizing temperature was decreased by high energy milling. Meanwhile, the microstructure show that Al2O3 evenly distributed in Ti3AlC2 substrate, forming dense layer of oxide film on the surface, and hindering the expansion of surface micro-cracks in the fracture process. Moreover, the mechanical properties of the composites were enhanced due to the effect of micro-crack toughening.
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页码：28 / 31
页数：3
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