Acquisition of a Field Emission Gun Analytical Transmission Electron Microscope for Materials Research

购买用于材料研究的场发射枪分析透射电子显微镜

• 批准号: 9413550
• 负责人: David Luzzi
• 金额: $ 70万
• 依托单位: University of Pennsylvania
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9413550&HistoricalAwards=false
• 关键词: Acquisition; Field; Emission; Gun; Analytical

Funds fron the Academic Research Infrastructure Program will support the acquisition of a Field Emission Transmission Electron Microscope (FE-TEM), an instrument that is specifically designed for high-resolution chemical analysis. The FE-TEM will include basic specimen stages, an x-ray flourescence spectrometer, a GATAN imaging filter, and a charge- coupled-device (CCD) camera and associated hardware. The FE-TEM will be employed in the study of: 1) structure and properties of alloy and model composite interfaces; 2) the effect of impurity segregation on the fracture mechanisms of metal/ceramic interfaces; 3) structural and compositional inhomogeneities in microwave ceramics; 4) the effects of concentration gradients near grain boundaries on the properties of electronic ceramics; 5) local structure and composition in catalytic materials; 6) morphological development of nanocrystalline ceramic composites from polymeric precursors; 7) chemistry/property relations at the interphase region in polymer/ceramic composites; 8) polymer interfaces and capillary wave formation. A field emission transmission electron microscope with associated peripheral hardware will be employed in the study of materials. A diverse range of topics from composite interfaces, fracture of metal/ceramic interfaces, microwave and electronic ceramics, catalytic materials, polymer/ceramic composities, and capillary wave formation at polymer interfaces will be studied.

学术研究基础设施计划的资金将支持购买场发射透射电子显微镜 (FE-TEM)，这是一种专为高分辨率化学分析而设计的仪器。 FE-TEM 将包括基本样品台、X 射线荧光光谱仪、GATAN 成像滤光片、电荷耦合器件 (CCD) 相机和相关硬件。有限元透射电镜将用于研究： 1）合金和模型复合材料界面的结构和性能； 2）杂质偏析对金属/陶瓷界面断裂机制的影响； 3）微波陶瓷的结构和成分不均匀性； 4）晶界附近浓度梯度对电子陶瓷性能的影响； 5）催化材料的局部结构和组成； 6) 聚合物前驱体纳米晶陶瓷复合材料的形态发展； 7) 聚合物/陶瓷复合材料界面区域的化学/性能关系； 8）聚合物界面和毛细波的形成。 场发射透射电子显微镜及其相关外围硬件将用于材料研究。将研究复合材料界面、金属/陶瓷界面断裂、微波和电子陶瓷、催化材料、聚合物/陶瓷复合材料以及聚合物界面毛细管波形成等各种主题。