Cluster Assembled Nanophase Metals Using NMR

使用 NMR 聚集纳米相金属

• 批准号: 9308168
• 负责人: Bryan Suits
• 金额: $ 24万
• 依托单位: Michigan Technological University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-01 至 1997-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9308168&HistoricalAwards=false
• 关键词: Cluster; Assembled; Nanophase; Metals; Using

9308168 Suits This work addresses fundamental issues of atomic and electronic structure and the deformation mechanism in cluster-assembled nanophase metals. Nuclear magnetic resonance (nmr) techniques will be applied to metallic samples prepared by consolidation of small clusters. These nanophase samples will have a grain size of a few nanometers and can be up to five times stronger than the same material with a larger grain size. The atomic scale effect on the nmr response and the site-selective nature of the nmr measurements will provide a new and unique view of the structure of these materials. The NMR work is performed in conjunction with sample preparation performed at Argonne National Laboratory. %%% Nuclear Magnetic resonance (NMR) provides information on the structural and electronic properties of materials as seen by individual atoms. Metals produced by consolidation of very small crystalline particles (10 to 30 atoms across), referred to as nanophase metals, have significantly enhanced mechanical properties compared to the naturally occuring material. This work will apply techniques of NMR to help understand the enhanced mechanical properties from an atomic viewpoint. This will aid in the development of new materials and new uses for these materials. The NMR work is performed in conjunction with sample preparation performed at Argonne National Laboratory. ***

9308168诉讼这项工作解决原子和电子结构的基本问题，并在集群组装纳米金属的变形机制。 核磁共振（nmr）技术将应用于通过小团簇的固结制备的金属样品。 这些纳米相样品将具有几纳米的晶粒尺寸，并且可以比相同的纳米材料强五倍。 具有较大晶粒尺寸的材料。 核磁共振响应的原子尺度效应和核磁共振测量的位置选择性将为这些材料的结构提供一个新的和独特的视角。 NMR工作与在阿贡国家实验室进行的样品制备一起进行。 %核磁共振（NMR）提供了单个原子所见的材料结构和电子特性的信息。 由非常小的晶体颗粒（10至30个原子）固结而成的金属，称为纳米相金属，与自然发生的材料相比，具有显着增强的机械性能。 这项工作将应用核磁共振技术来帮助从原子的角度理解增强的机械性能。 这将有助于开发新材料和这些材料的新用途。 NMR工作与在阿贡国家实验室进行的样品制备一起进行。 ***