High resolution and analytical electron microscopy. (A07)

A7项目利用高分辨率和分析的电子显微镜技术研究晶体缺陷、界面、异相和表面层的原子结构和局域化学。研究了位错和平面断层的元素偏析，以了解其在高温蠕变中的作用。为了获得高温合金化学复杂相的相关扩散数据，对所谓的纳米扩散偶进行了研究。最后，用电子和X射线层析技术表征了碳化钛相、氧化膜和其他复杂微结构的三维结构。

Project A7 utilizes high resolution and analytical TEM techniques to study the atomic structure and local chemistry of crystal defects, interfaces, foreign phases and surface layers. Elemental segregation to dislocations and planar faults are investigated to understand its role in high temperature creep. So-called nano diffusion couples are studied in order to obtain relevant diffusion data for the chemically complex phases of superalloys. Finally, electron and X-ray tomography techniques are applied to characterize the 3D-structure of TCP-phases, oxide scales and other complex microstructures.