MRI: Acquisition of an electron probe microanalyzer for Earth Science and Materials research and education

MRI：购买电子探针显微分析仪用于地球科学和材料研究和教育

• 批准号: 1428877
• 负责人: Matthew Kohn
• 金额: $ 91.45万
• 依托单位: Boise State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1428877&HistoricalAwards=false
• 关键词: MRI; Acquisition; electron; probe; microanalyzer

This award will provide funds to acquire a state-of-the-art electron probe microanalyzer (EPMA) to support numerous funded and ongoing research projects. As a cornerstone instrument within the Center for Materials Characterization, the EPMA is vital to the scientific health of the university and region by providing a versatile platform for the analysis of major, minor, and trace elements to promote NSF-funded research in the solid Earth Sciences and in Materials Science and Engineering. The EPMA will directly enhance undergraduate and graduate student research, teaching, and hands-on experiences through directed research and classroom projects. Adding this instrument will fill a critical need in the regional analytical infrastructure, promote cross-disciplinary research, and greatly enhance the quality and scope of Earth Science and Materials research and education in the Interior Northwest. Major research objectives for the EPMA include the following: 1. Analysis of major, minor, and trace element compositions and zoning in metamorphic minerals to infer petrogenetic processes and pressure-temperature conditions and evolution; 2. Major, minor, and trace element analysis of igneous minerals to constrain (a) melt evolution at mid-ocean ridges, (b) formation of the mantle lithosphere, and (c) felsic magmagenesis and formation of continental crust (in conjunction with U-Pb geochronology); 3. Major and minor element analysis of functional ceramics, e.g. barium polytitanates and lanthanide perovskites, to evaluate how vacancy-producing chemical substitutions affect physical and electrical properties; 4. Composition maps of tooth enamel to understand mineralization processes of modern teeth (which has implications for interpreting chemical and isotopic data) and trace element uptake; 5. Trace element analysis of minerals for geologic thermometry as applied to understanding the conditions of formation of mylonites and dateable minerals like zircon and titanite; 6. Major and minor element analysis of magnetic shape memory alloys, e.g. Ni-Mn-Ga, to determine micrometer-scale element distributions and their influence on mechanical and magnetic properties; 7. Minor element contamination of materials of interest to the nuclear industry, especially graphite- molten salt interactions; and 8. Major and minor element stoichiometry of transition-metal dichalcogenides for electronics materials research and development.

该奖项将提供资金购买最先进的电子探针微量分析仪（EPMA），以支持众多资助和正在进行的研究项目。作为材料表征中心的基石仪器，EPMA 对大学和地区的科学健康至关重要，它提供了一个用于分析主元素、微量元素和微量元素的多功能平台，以促进 NSF 资助的固体地球科学和材料科学与工程研究。 EPMA 将通过定向研究和课堂项目直接增强本科生和研究生的研究、教学和实践经验。添加该仪器将满足区域分析基础设施的关键需求，促进跨学科研究，并大大提高西北内陆地区地球科学和材料研究和教育的质量和范围。 EPMA的主要研究目标包括： 1. 分析变质矿物的主量、微量和微量元素组成和分带，以推断岩石成因过程、压力-温度条件和演化； 2. 对火成矿物进行主量、微量和微量元素分析，以限制 (a) 大洋中脊的熔体演化，(b) 地幔岩石圈的形成，以及 (c) 长英质岩浆成因和大陆地壳的形成（与 U-Pb 地质年代学结合）； 3、功能陶瓷等的主微量元素分析。多钛酸钡和镧系钙钛矿，评估产生空位的化学取代如何影响物理和电性能； 4. 牙釉质成分图，用于了解现代牙齿的矿化过程（这对解释化学和同位素数据有影响）和微量元素吸收； 5. 用于地质测温的矿物微量元素分析，用于了解糜棱岩和锆石、钛矿等定年矿物的形成条件； 6. 磁性形状记忆合金的主微量元素分析，例如： Ni-Mn-Ga，确定微米级元素分布及其对机械和磁性能的影响； 7. 核工业相关材料的微量元素污染，特别是石墨-熔盐相互作用； 8. 用于电子材料研究和开发的过渡金属二硫属化物的主量和微量元素化学计量。