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中文摘要：
运用电场激活压力辅助合成（FAPAS）和原位合成技术制备了TiC-TiB2-Ni/TiAl/Ti功能梯度材料,主要研究了外加电场对材料合成及层界面扩散连接的作用,分析了材料各层及界面微观组织和相组成;分析了电场的施加以及TiAl的燃烧反应对材料合成过程及合成结构的影响;研究结果表明,TiC-TiB2-Ni/TiAl/Ti功能梯度材料的界面区产生成分的互扩散和形成了良好的冶金结合,从钛板到金属陶瓷层的显微硬度呈梯度变化。
英文摘要：
TiC-TiB2-Ni/TiAl/Ti gradient functionally materials （FGMs） were prepared by field-activated pressure-assisted synthesis （FAPAS） and in-situ synthesis processes. The effects of the electric field on material synthesis and diffusion bonding of layers have been investigated. The microstructure and phase constitution of each layer were analyzed. The effects on synthetic process and composite structure during the imposition of electric field and the combustion reaction of TiAl are observed. The results show that the concentration profiles of elements across the interfaces of the TiC-TiB2-Ni/TiAl/Ti FGM show significant inter-diffusion and good metallurgical bonding. The sample has a gradient distribution of micro-hardness across the titanium substrate to the surface layer.
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