MRI: Acquisition of Analytical Scanning Electron Microscope for Engineering and Earth Science Research

该主要研究仪器（MRI）拨款用于购买具有扩展功能的最先进的场发射扫描电子显微镜（SEM），包括电子背散射衍射（EBSD）探测器，具有500℃能力的原位加载阶段，背散射探测器，3D图像重建软件和彩色阴极发光（CCL）探测器。EBSD系统和加载阶段将用于回答制造中的重要问题，如零件与晶粒尺寸比对微观和纳米成形中晶粒组织演变和成形质量的影响，以及在轻量化结构中六边形紧密堆积合金成形中孪晶和位错变形的重要性。这些信息将用于构建微尺度成形的微结构信息建模。EBSD系统还将用于绘制在一系列热液条件下变形的橄榄石晶体的方向，用于地球科学研究断层带中容纳滑动的变形机制。来自UNH和地区大学的地球科学家将使用CCL-enabled SEM进行最先进的研究，结合定义明确的晶体生长带和地质年代学或微量元素分析来研究地球岩石圈的形成，地球岩石圈内的流体（包括碳）循环，板块边界过程和相关主题。它还将用于表征火山灰的大气运输研究。通过该仪器获得的信息将用于改进基于宏观、微观和纳米尺度的变形制造工艺。它还将提高人们对地幔的形成、火山灰的形成和运输以及生物材料变形的理解。SEM将为本科生的研究提供新的机会。该仪器的远程访问能力也将用于大大提高新罕布什尔大学K-12的外展能力，并为区域工业提供资源。

This Major Research Instrumentation (MRI) grant provides funding to purchase a state-of-the-art field emission scanning electron microscope (SEM) with extended capabilities including an electron backscatter diffraction (EBSD) detector, an in-situ loading stage with 500oC capability, a backscatter detector, 3D image reconstruction software, and a color cathodoluminescence (CCL) detector. The EBSD system and loading stage will be used to answer important questions in manufacturing regarding the impact of part-to-grain size ratio on evolution of grain structure and forming quality in micro and nanoforming, and the importance of twinning and dislocation-based deformation in forming of hexagonal close-packed alloys for lightweight structures. The information will be used to construct microstructurally-informed modeling of microscale forming. The EBSD system will also be used to map the orientation of the olivine crystals deformed under a range of hydrothermal conditions for Earth Science research studies of the deformation mechanisms that accommodate slip in fault zones. The CCL-enabled SEM will be used by Earth Scientists from UNH and area universities to conduct state-of-the-art investigations combining well-defined crystal growth zones and geochronology or trace elemental analyses to investigate the formation of Earth's lithosphere, fluid (including carbon) cycling within Earth's lithosphere, plate boundary processes, and related topics. It will also be used to characterize volcanic ash for atmospheric transport studiesThe information obtained with this instrument will be used to improve deformation-based manufacturing processes on the macro, micro, and nanoscale. It will also lead to improved understanding of the formation of the earth's mantle, formation and transport of volcanic ash, and deformation of bio-inspired materials. The SEM will provide new opportunities for undergraduate research. The instrument's remote access capabilities will also be used to greatly enhance the University of New Hampshire's K-12 outreach capabilities and to provide a resource for regional industry.