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

这项重大研究仪器（MRI）拨款提供资金购买最先进的场发射扫描电子显微镜（SEM），其扩展功能包括电子背散射衍射（EBSD）探测器，具有500 oC能力的原位加载台，背散射探测器，3D图像重建软件和彩色阴极射线发光（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，即微纳米成形中零件与晶粒尺寸比对晶粒结构演变和成形质量的影响，以及孪生和位错变形在六方密排合金成形中的重要性。这些信息将用于构建微尺度成形的微观结构建模。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，研究适应断层带滑动的变形机制。联合国大学和地区大学的地球科学家将使用CCL启用的SEM进行最先进的调查，结合明确的晶体生长区和地质年代学或微量元素分析，以调查地球岩石圈的形成，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。 它还将用于表征大气传输研究中的火山灰。该仪器获得的信息将用于改进宏观、微观和纳米级的基于变形的制造过程。 它还将导致更好地了解地球地幔的形成，火山灰的形成和运输，以及生物启发材料的变形。SEM将为本科生研究提供新的机会。 该仪器的远程访问能力还将用于大大提高新罕布什尔州大学的K-12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.