Acquisition of X-Ray Fluorescence Spectrometer

购置 X 射线荧光光谱仪

• 批准号: 9409718
• 负责人: Donald Mikkola
• 金额: $ 14万
• 依托单位: Michigan Technological University
• 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: 1994-07-15 至 1996-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9409718&HistoricalAwards=false
• 关键词: Acquisition; Ray; Fluorescence; Spectrometer

Matching funds are provided for the purchase of a state-of- the-art x-ray fluorescence spectrometer to be used in support of research in the areas of materials and minerals at Michigan Technological University. Primary users will be faculty and graduate students from the Department of Metallurgical and Materials Engineering, with significant use also from the Department of Geological Engineering, Geology and Geophysics. Research programs in the materials area requiring the new spectrometer include studies of: structure-property-composition relationships in intermetallics, austempered ductile irons, and mechanically alloyed materials; macrosegregation in castings; microstructural development in multi-component oxide systems; means of minimizing hexavalent chromium effects in steelmaking refractories; parameters for powder forging low alloy steels; compositional effects in grain boundary segregation; and welding electrode wear mechanisms. Programs in geology that would use the new instrument include studies of: volcanic ash and rock; paleomagnetic effects in rocks and sediments; techniques of enhanced petroleum recovery; ground water effects related to fluid flow in porous media and remediation strategies; and the Precambrian rocks in the Lake Superior basin. The new instrument would replace a 16- year-old spectrometer in the x-ray analytical facility at the University. The old instrument, which has been used heavily by a large number of users, is no longer reliable, and is inadequate for current and future projects requiring analyses of a large number of samples with greater precision, accuracy, and much lower detection levels.

还提供了配套资金，用于购买一台最先进的X射线荧光光谱仪，用于支持密歇根理工大学材料和矿物领域的研究。主要用户将是冶金和材料工程系的教师和研究生，地质工程、地质和地球物理系也有大量使用。材料领域需要新型光谱仪的研究计划包括：金属间化合物、等温淬火球墨铸铁和机械合金化材料的结构-性能-成分关系;铸件的宏观偏析;多组分氧化物系统的微观结构发展;炼钢耐火材料中六价铬影响最小化的方法;粉末锻造低合金钢的参数;成分对晶界偏析的影响;以及焊接电极磨损机制。将使用新仪器的地质学方案包括：火山灰和岩石;岩石和沉积物中的古地磁效应;提高石油采收率的技术;与多孔介质中流体流动有关的地下水效应和补救战略;以及苏必利尔湖上级盆地的前寒武纪岩石。新仪器将取代该大学X射线分析设施中使用了16年的分光计。大量用户大量使用的旧仪器已不再可靠，不适合当前和未来需要以更高的精度、准确度和低得多的检测水平分析大量样品的项目。