Acquisition of an X-ray Analyzer for Analytical Electron Microscope

这种能量色散x射线分析仪将把目前马奎特大学的电子显微镜转变为一种分析显微镜，能够对原子序数大于或等于4的元素进行化学分析，并能够分析直径小至20纳米的区域。该分析仪将用于二元合金体系中扩散诱导晶界迁移、液膜迁移的研究，以确定晶界和迁移液膜后的合金元素浓度分布；金属氧化物压敏电阻边界区和相的表征研究快速凝固超导体中金属元素微偏析的表征。此外，学生们还将接受这一乐器的培训。该分析仪将由三个小组共享，并提供给校园内工程、物理和化学领域的其他用户，以及感兴趣的当地工业团体。

This energy dispersive x-ray analyzer will convert the current electron microscope at Marquette University into an analytical microscope capable of chemical analysis of elements with atomic numbers greater or equal to 4, and capable of analyzing areas as small as 20 nm in diameter. The analyzer will be used in studies of diffusion induced grain boundary migration, liquid film migration in binary alloy systems to determine the alloy element concentration profiles behind boundaries and liquid films which have migrated; characterization studies of metal-oxide varistorboundary regions and phases; and characterization of microsegregation of metallic elements in rapidly solidified superconductors. In addition, students will be trained on this instrument. The analyzer will be shared by three groups, and made available to other users in engineering, physics, and chemistry on the campus, as well as interested local industrial groups.