Acquisition of a Field Emission Scanning Electron Microscope for Nanophase Materials Characterization

该项目购买具有能量色散轻元素x射线分析（EDX）和电子背散射衍射（EBSD）能力的场发射扫描电子显微镜，将使重要的材料研究工作得以开展。SEM将被安置在密苏里大学罗拉分校材料研究研究生中心。中心被指定为校园重大设备资源。该仪器将用于探测导电金属氧化物、金属/半导体纳米复合材料、纳米相弛豫铁电体和压电陶瓷、纳米结构形状记忆合金、环保聚合物涂层、玻璃纤维增强复合材料、玻璃的成核和结晶的电沉积成分和缺陷化学超晶格的纳米结构、组成、晶体取向和相组成。用等离子体增强化学气相沉积法沉积磁性薄膜。新仪器经过优化，可以在低光束电压和电流下工作，因此非常适合研究聚合物等材料，这些材料在传统的基于细丝的扫描电子显微镜中被损坏。该仪器对于纳米外延结构的研究、电陶瓷材料的研究、用于肝癌治疗的玻璃球和在玻璃中封装核废料的研究、用于替代铝上铬的防腐材料的研究以及用于冶金的纳米材料的研究都是必不可少的。＊＊＊

9704288 Switzer This project to purchase a field-emission scanning electron microscope with energy dispersive light-element x-ray analysis (EDX) and electron backscatter diffraction (EBSD) capabilities will enable important materials research work to be carried out. The SEM will be housed in the Graduate Center for Materials Research at the University of Missouri- Rolla. The Center is designated as a campus resource for major equipment. The proposed instrument will be used to probe the nanostructure, composition, crystallographic orientation, and phase composition of electrodeposited compositional and defect-chemistry superlattices of conducting metal oxides, metal/semiconductor nanocomposites, nanophase relaxor ferroelectrics and piezoelectric ceramics, nanostructured shape memory alloys, environmentally compliant polymer coatings, glass fiber reinforced composites, nucleation and crystallation of glass, and magnetic films deposited by plasma-enhanced chemical vapor deposition. The new instrument is optimized to operate at low beam voltages and currents, and is therefore ideal for studying materials like polymers which are damaged in conventional filament-based scanning electron microscopes. %%% The instrumentation is essential for work on nanoscale epitaxial architectures, work on electroceramic materials, work on glass sphere's for the treatment of liver cancer and encapsulation of nuclear waste in glass, and work on a corrosion protection material to be a replacement for chrome on aluminum and in work on nanomaterials in metallurgy. ***