Engineering Research Equipment Grant: High-Speed x-y Positioning System for Nanophase Materials Synthesis

该合同将用于一个高速x-y定位系统，该系统将被整合到一个现有的设施中，该设施将被用于由NSF支持的正在进行的工作中，通过使用新的材料合成技术来展示增强网状材料微观结构的能力。该技术涉及产生熔融金属液滴流，这些液滴被引导到温度控制的基板上，在那里它们经历快速凝固。对凝固现象的控制就是对材料微观组织的控制和操纵。结合所提出的高速定位系统，微结构可以细化到纳米尺度的晶粒尺寸（至少一个维度的晶粒为100nm）。最近，人们对纳米材料的合成产生了重大的科学兴趣。与纳米相材料相关的特性，如增加的热膨胀，降低的密度，增加的强度和比热以及超模效应，使这些材料具有许多新的工程应用。所提出的高速定位系统将允许用新材料合成技术制造纳米相材料的演示。

9311075 Orme The award is for a high-speed x-y positioning system that will be incorporated in an existing facility which is used in ongoing work supported by NSF to demonstrate the ability to enhance the microstructure of net-formed materials by using the new materials synthesis technique. The technique involves the generation of streams of molten metal droplets that are directed onto a temperature controlled substrate where they undergo rapid solidification. Control of the solidification phenomena leads to control and manipulation of the materials's microstructure. With the incorporation of the proposed high speed positioning system the microstructure can be refined to exhibit grain sizes on a nanoscale (with grains 100nm in at least one dimension). Significant scientific interest is recently directed towards nanophase materials synthesis. Properties which are associated with nanophase materials such as increased thermal expansion, reduced density, increased strength and specific heat as well as a supermodulus effect, have given these materials numerous new engineering applications. The proposed high-speed positioning system will allow the demonstration of the fabrication of nanophase materials with the new materials synthesis technique.