摘要
本文提出了利用电子背散射衍射(EBSD)技术确定块状晶体未知点阵的新思路,详细介绍了从EBSD谱中的二维面信息到三维空间的重构算法,利用超定方程组,由菊池带宽度及其夹角信息,求出三维倒易初基胞的晶胞参数。结果表明,用单张EBSD花样完全可以解析未知晶体的Bravais点阵类型及晶胞参数。
A new method to determine unknown lattice of bulk crystals based on electron backscattered diffraction technique has been proposed in the present work. The arithmetic to reconstruct a three-dimensional reciprocal primitive cell in a Kikuchi pattern was introduced in detail. By using overdetermined equations, the parameters of the reciprocal primitive cell were solved according to the information obtained from the width and azimuth of the Kikuchi bands. The results demonstrate that the Bravais lattice type and parameters of unknown crystals could be successfully achieved by means of single electron backscattered diffraction pattern.
出处
《电子显微学报》
CAS
CSCD
2008年第6期499-505,共7页
Journal of Chinese Electron Microscopy Society
基金
山东省自然科学基金(No.Y2006F61)
教育部留学回国人员科研启动基金资助项目
关键词
电子背散射衍射
未知晶体
三维重构
BRAVAIS点阵
electron backscattered diffraction
unknown crystals
three-dimensional reconstruction
Bravais lattice