Electron backscatter diffraction technique (EBSD)

电子背散射衍射技术（EBSD）

• 批准号: 432915371
• 金额: --
• 依托单位: Ruprecht-Karls-Universität Heidelberg
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/432915371?language=en
• 关键词: Electron; backscatter; diffraction; technique; EBSD

The input data in both, field and experimental, geomaterial research directions are chemical compositions of mineral phases as well as the crystalline structure and crystallographic orientation of the mineral phases. The EBSD technique, complementary to the EMPA chemical analyses, enables crystallographic measurements of individual minerals or synthetic materials down to a nanometer scale. The EBSD technique, requested here, will be used for following microstructural characterizations: Spatial information that can be visualized in maps and images with a spatial resolution of 3 nm; Visualization of the microstructure for grain sizes, grain and subgrain formation and phase distribution; Visualization of the local crystal structure and crystal misorientations with a lateral resolution of> 20 nm; Universal crystallographic texture determination of natural and synthetic materials; In situ stress determination and the innovative HR-EBSD analysis; Detection of radiation damage in radioactive minerals (metamictization); Mineralogical identification of very small phases using their diffraction pattern.

在现场和实验中，地质材料研究方向的输入数据是矿物相的化学成分以及矿物相的晶体结构和晶体取向。EBSD技术是EMPA化学分析的补充，可以对单个矿物或合成材料进行纳米级的晶体学测量。EBSD技术，这里要求，将用于以下微观结构表征：空间信息，可以可视化的地图和图像的空间分辨率为3纳米;可视化的晶粒尺寸，晶粒和亚晶粒的形成和相分布的微观结构;可视化的局部晶体结构和晶体取向差的横向分辨率> 20纳米;天然和合成材料的通用晶体结构测定;原地应力测定和创新的HR-EBSD分析;放射性矿物辐射损伤检测（变晶作用）;利用衍射图案对非常小的相进行矿物学鉴定。