Distribution of boundary planes in a (La0.67Nd0.33)B6 polycrystalline bulk prepared by spark plasma sintering
Distribution of boundary planes in a (La0.67Nd0.33)B6 polycrystalline bulk prepared by spark plasma sintering
复制标题
放电等离子烧结制备的(La0.67Nd0.33)B6多晶块中边界面的分布
DOI：
10.1039/c4ce02389g
复制
发表时间：
2015
期刊：
影响因子：
3.1
通讯作者：
Zhuang Wang
中科院分区：
文献类型：
--
作者：
Xiaokun Yuan;Dongtao Zhang;Shenlin Zhou;Ming Yue;Jiuxing Zhang;Jie Zhu;Qiang Ma;Zhuang Wang
采用电子背散射衍射方法和五参数分析方法研究了放电等离子烧结（La0.67Nd0.33）B6多晶块体的晶界取向织构。虽然整个边界总体上有利于{001}取向，但是各个边界平面的取向纹理是不均匀的。若按晶界类型划分，LaB 6/LaB 6晶界面偏向{001}取向，NdB 6/NdB 6晶界面偏向{011}取向，LaB 6/NdB 6相界面偏向{011}取向。如果除以取向差角，取向差角小于10°的边界有利于{011}取向，取向差角大于10°的边界有利于{001}取向。分析了边界面各向异性分布的可能成因。边界平面分布的各向异性对电子发射率的潜在影响也被提出。
The electron backscatter diffraction approach and five parameter analysis method are used to investigate the orientation textures of boundary planes in a (La0.67Nd0.33)B6 polycrystalline bulk prepared by spark plasma sintering. While the entire boundaries overall favour the {001} orientation, the orientation textures of various boundary planes are not homogeneous. If divided by the boundary type, the LaB6/LaB6 grain boundary planes favour the {001} orientation, the NdB6/NdB6 grain boundary plane orientation approaches the {011} position, and the LaB6/NdB6 phase boundary planes favour the {011} orientation. If divided by the misorientation angle, boundaries with a misorientation angle lower than 10° favour the {011} orientation and boundaries with a misorientation angle higher than 10° favour the {001} orientation. Possible origins of the anisotropic distribution of boundary planes are analyzed. The potential effects of anisotropy in boundary plane distributions on electron emissivity are also suggested.