Rapid fabrication and phase transition of Nd and Ce co-doped Gd2Zr2O7 ceramics by SPS
Rapid fabrication and phase transition of Nd and Ce co-doped Gd2Zr2O7 ceramics by SPS
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DOI：
10.1016/j.jeurceramsoc.2018.02.024
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发表时间：
2018-07
影响因子：
5.7
通讯作者：
Lan Wang;X. Shu;F. Yi;D. Shao;Kuibao Zhang;Haibin Zhang;Xirui Lu
中科院分区：
文献类型：
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作者：
Lan Wang;X. Shu;F. Yi;D. Shao;Kuibao Zhang;Haibin Zhang;Xirui Lu
采用放电等离子烧结技术，在3≤min内快速制备了一系列Nd2-xNdxZr2-yCeyO7(0.0≤x，y≤2.0)共掺Nd2-xNdxZr2-yCeyO7(0.0 x，y CoYO7)陶瓷。详细研究了NdCe含量对材料的相组成、晶格参数、激活模式、微观形貌和微观结构的影响。X-射线衍射分析表明，当≤y≤为1.0时，样品为单相，大于1.0时为多相。晶格参数随Nd、Ce含量的增加而增大。颗粒密集堆积，呈立方体状，元素在化合物中分布基本均匀。该合成方法为制备高致密单相陶瓷提供了一条简单的途径，在1600-1700℃，80 Mpa的压力下，反应3 分钟。
A series of Nd and Ce co-doped Gd2-xNdxZr2-yCeyO7(0.0≤ x,y ≤2.0) ceramics were rapidly fabricated through spark plasma sintering (SPS) within 3 min. The effects of Nd and Ce contents on the phase composition, lattice parameter, active modes, microtopography and microstructure have been investigated in detail. XRD studies reveal that the compositions corresponding to 0.0≤ y ≤1.0 show a single phase and beyond 1.0 exhibit multiphase. The lattice parameters increase with elevated Nd and Ce content. The grains are densely packed on each other with cube-like shape, and the elements are almost homogeneously distributed in the compound. This synthetic method provides a simple pathway for the preparation of highly densified single phase ceramic at 1600–1700 ℃ for 3 min under pressure of 80 MPa.