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首页> 外文期刊>Materials Letters >Synthesis of single-phase polycrystalline Ti_3SiC_2 and Ti_3AlC_2 by hot pressing with the assistance of metallic Al or Si
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Synthesis of single-phase polycrystalline Ti_3SiC_2 and Ti_3AlC_2 by hot pressing with the assistance of metallic Al or Si

机译：金属铝或硅的热压合成单相多晶Ti_3SiC_2和Ti_3AlC_2

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摘要

In this paper, aluminum and silicon were used as additives for the synthesis of Ti_3SiC_2 and Ti_3AlC_2, respectively. An appropriate amount of these additives accelerated the synthesis reaction of Ti_3SiC_2 and Ti_3AlC_2. Polycrystalline bulk samples of Ti_3SiC_2 and Ti_3AlC_2 were fabricated by hot pressing (HP) the starting mixtures of titanium carbide, titanium, silicon, and aluminum powders at a temperature of 1300-1400 deg C under a pressure of 30 MPa. The prepared samples are predominantly single phase and folly dense. Hot pressed Ti_3SiC_2 and Ti_3AlC_2 grains are plane-like with average sizes of 5 and 15 mu m in the longitudinal direction, respectively. The energy-dispersive spectroscope (EDS) results reveal that the atomic ratio of Si to Al in the sintered product is larger than that in the starting mixture.
机译：在本文中，铝和硅分别用作合成Ti_3SiC_2和Ti_3AlC_2的添加剂。适量的这些添加剂促进了Ti_3SiC_2和Ti_3AlC_2的合成反应。通过在1300-1400摄氏度的温度和30 MPa的压力下热压（HP）碳化钛，钛，硅和铝粉的起始混合物，制得Ti_3SiC_2和Ti_3AlC_2的多晶块状样品。所制备的样品主要为单相且完全致密。热压Ti_3SiC_2和Ti_3AlC_2晶粒为平面状，其纵向平均尺寸分​​别为5和15μm。能量色散光谱仪（EDS）结果表明，烧结产物中Si与Al的原子比大于起始混合物中的原子比。

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