Synthesis and dielectric properties of textured SrBi2Nb2O9 ceramics via laser rapid solidification
Synthesis and dielectric properties of textured SrBi2Nb2O9 ceramics via laser rapid solidification
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激光快速凝固织构SrBi2Nb2O9陶瓷的合成及其介电性能
DOI：
10.1016/j.jallcom.2012.01.099
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发表时间：
2012-04
影响因子：
6.2
通讯作者：
Mingyu Li
中科院分区：
文献类型：
--
作者：
Junji Zhang;Mingju Chao;Erjun Liang;Mingyu Li
亮点：► 首次采用激光快速凝固技术制备了织构SrBi2Nb2O9。► 择优取向沿b轴方向或< 0 1 0>面。► 定向凝固形成织构结构。► 最短的b轴长度决定了择优取向方向。► 通过增加挥发性原料的含量，可以合成更多织构的陶瓷。-摘要：织构多晶SrBi2Nb2O9使用CO2激光器通过激光快速凝固合成了具有优选<0 1 0>取向的陶瓷(SBN)。 X射线衍射分析表明，所得SBN的择优取向沿b轴，取向因子约为0.78。扫描电子显微镜图像显示，所获得的SBN由片状晶粒组成，最大厚度和长度分别为1.0 μm和0.1 mm，且与激光入射方向平行。定向凝固产生织构结构，并且最短的b轴长度决定了优选的取向方向是沿着b轴。介电性能研究表明所获得的SBN的相变是弥散的，这可能是由于晶粒的取向排列所致。
Highlights:► For the first time, textured SrBi2Nb2O9 was prepared via laser rapid solidification.► The preferred orientation was along the b-axis direction or< 0 1 0> plane.► The directional solidification resulted in the textured structure.► The shortest b-axis length determined the preferred orientation direction.► More textured ceramics may be synthesized by increasing the content of volatile raw material.-Abstract: Textured poly-crystalline SrBi2Nb2O9 (SBN) with a preferred< 0 1 0> orientation ceramics were synthesized via laser rapid solidification using a CO2 laser. X-ray diffraction analysis reveals that the preferred orientation of the as-obtained SBN is along the b-axis, and the orientation factor is approximately 0.78. Scanning electron microscope image shows that the as-obtained SBN is composed of flake-like grains with maximum thickness and length of 1.0 μm and 0.1 mm, respectively, which are parallel to the laser incident direction. The directional solidification produces the textured structure, and the shortest b-axis length determines that the preferred orientation direction is along the b-axis. Dielectric property research demonstrates that the phase transition of the as-obtained SBN is diffuse, which may be due to the orientation array of the grains.
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影响因子：
9.2
作者：
Jie Zhang;E. Liang;Xiangdan Zhang
通讯作者：
Jie Zhang;E. Liang;Xiangdan Zhang
激光快速凝固法合成织构BaTi2O5陶瓷及其介电性能
影响因子：
4.5
作者：
Junji Zhang;Jumei Yu;Mingju Chao;Erjun Liang;Mingyu Li;Dechuan Li
通讯作者：
Dechuan Li
影响因子：
6.2
作者：
H. Ogawa;A. Kan;Y. Nakamura
通讯作者：
H. Ogawa;A. Kan;Y. Nakamura
影响因子：
64.8
作者：
DEARAUJO, CAP;CUCHIARO, JD;SCOTT, JF
通讯作者：
SCOTT, JF
影响因子：
2.5
作者：
E. Liang;J. P. Wang;E. Xu;Z. Du;M. Chao
通讯作者：
E. Liang;J. P. Wang;E. Xu;Z. Du;M. Chao