Acquisition of a Scanning Electron Microscope with Specialized Crystalline Orientation and Particle Analysis Capability (Materials Research)

获得具有专门晶体取向和颗粒分析能力的扫描电子显微镜（材料研究）

• 批准号: 8704808
• 负责人: Brent Adams
• 金额: $ 10.76万
• 依托单位: Brigham Young University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-12-15 至 1989-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8704808&HistoricalAwards=false
• 关键词: Acquisition; Scanning; Electron; Microscope; Specialized

A new scanning electron microscope will be purchased which will include specialized rapid crystallite orientation and particle analysis capability needed for on-going research programs in four major groups at Brigham Young University. The general improvement in resolution over the present facility would also serve well many other faculty and graduate students. The microscope will be equipped with new low-light electron backscattering diffraction technology recently developed at Bristol University. This technology permits rapid crystallographic orientation of small crystals. The Materials Research Group in the Department of Mechanical Engineering has a critical need for this capability in order to advance a new theory of mesostructure in polycrystalline materials which is expected to have numerous applications in predicting the properties and optimal processing for metal and ceramic alloys. This technology is not presently installed at any other laboratory in the United States. The microscope will also be equipped with a state-of-the-art microchemical analysis system capable of computer controlled multiple particle analysis of the chemistry and morphology of crystallites and particles. The present scanning electron microscope at BYU is limited to single particle chemical analysis with a resolution of about 2 micrometers. The proposed system offers a four-fold improvement in the resolution of sized and composition for multiple particle images. In our current studies of the chemistry and morphology of carbon deposits in catalyst pellets and pores (BYU Catalysis Laboratory) the improved resolution and multiple-particle statistics are necessary to identify the important mechanisms of catalyst deactivation.

将购买一台新的扫描电子显微镜， 包括专门快速微晶取向和颗粒 分析能力所需的正在进行的研究计划，在四个 杨百翰大学的主要团体。 总 与现有设施相比，分辨率的提高还将 为许多其他教师和研究生服务。 该显微镜将配备新的低光电子 背散射衍射技术最近在 布里斯托大学。 这项技术可以快速 小晶体的晶体取向。 的材料 机械工程系的研究小组有一个 迫切需要这种能力，以推动一个新的 多晶材料的介观结构理论， 预计在预测未来的发展方面有许多应用 金属和陶瓷合金的性能和最佳加工。 这项技术目前还没有安装在任何其他 美国的实验室。 显微镜还将配备最先进的 计算机控制的微量化学分析系统 化学和形态的多颗粒分析 微晶和颗粒。 目前的扫描电子 杨百翰大学的显微镜仅限于单粒子化学分析 分辨率约为2微米。 所提出的系统 提供了四倍的提高分辨率的大小， 合成多个粒子图像。在我们目前的研究中， 催化剂中碳沉积物的化学和形态 颗粒和孔（杨百翰大学催化实验室）的改进 分辨率和多粒子统计是必要的， 确定催化剂失活的重要机制。