Role of impurities on the spark plasma sintering of ZrCx–ZrB2 composites
Role of impurities on the spark plasma sintering of ZrCx–ZrB2 composites
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DOI：
10.1016/j.jeurceramsoc.2007.07.013
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发表时间：
2008
影响因子：
5.7
通讯作者：
F. Goutier;G. Trolliard;S. Valette;A. Maître;C. Estournès
中科院分区：
文献类型：
--
作者：
F. Goutier;G. Trolliard;S. Valette;A. Maître;C. Estournès
研究了放电等离子烧结（SPS）ZrCx和ZrCx-ZrB 2复合材料的工艺参数，考察了加载载荷、温度和加热时间对SPS烧结的影响。此外，还通过透射电子显微镜（TEM）探讨了原材料中检测到的主要杂质对烧结行为的作用。整料和复合材料的分析表明，液相形成的二氧化硅杂质和完整的结构重组的游离碳到石墨形式在烧结处理。它也表明，在复合材料中，塑性应变优先容纳的ZrB 2晶体。
The study of the spark plasma sintering (SPS) of ZrCxand ZrCx–ZrB2composites was carried out considering the effect of experimental parameters such as the applied load, the temperature and the heating time. In addition, the role of the main impurities, detected in the raw materials, on the sintering behaviour has been explored by Transmission Electron Microscopy (TEM). The analyses of monoliths and composites showed up the liquid phase formation from silica impurities and the complete structural reorganisation of free carbon into the graphite form during the sintering treatment. It is also shown that within composites, the plastic strain is preferentially accommodated by ZrB2crystals.