Collaborative Proposal: Manufacturing of Nanocrystalline Bulk Materials by Field Activated Sintering

合作提案：通过场激活烧结制造纳米晶块体材料

• 批准号: 0400168
• 负责人: Antonios Zavaliangos
• 金额: --
• 依托单位: Drexel University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0400168&HistoricalAwards=false
• 关键词: Collaborative; Proposal; Manufacturing; Nanocrystalline; Bulk

A scientific framework will be established for field processing of nanosize particulate materials. In particular, a detailed theoretical-experimental program will be pursued with specific goals to: (a) evaluate and clarify the interdependence of material properties, geometry of microstructure and processing parameters of nanosize powders, (b) quantify the conduction of electric current through sintering nanopowder compacts and relate them to manufacturing and properties, and (c) develop a process design/characterization methodology for this technology that is applicable to nanocrystalline materials for large and net shape parts.This project will: (a) generate fundamental knowledge of the role of size scale in field processing, (b) elucidate specific mechanisms responsible for the enhanced performance of field sintering, (c) provide a rational basis for process design and optimization of this process, (d) provide guidance for the development of new models for design of complex shape processing in terms of optimization of current application, as well as die design. In addition, we will generate sizable specimens of nanocrystalline materials that will be extensively characterized for structure, defects and mechanical properties.Structural materials with grain size less than 100 nm are characterized by unusually high strength, hardness and wear resistance, as well as good fatigue resistance. This project focuses on the manufacturing and characterization of bulk nanocrystalline materials produced by field assisted sintering that can produce near net-shape bulk components starting from nanosize powders, and retains the scale of the microstructure during processing. The development of a scientific processing base for manufacturing of bulk nanoscale materials will be a major step towards commercialization of this exciting new class of materials which preserve nanometric grain size and combine unusual properties. This collaborative proposal between two Universities will provide a synergistic effect to enhance both modeling performed at Drexel University and nano-process understanding by experiments at University of California Davis.The integration of education and training within the research program will be achieved by developing a seminar course for Drexel and UCD students on "Manufacturing of bulk nanomaterials". We will continue involving undergraduate students in research by REU supplements.

将建立一个科学框架，用于纳米颗粒材料的现场加工。 特别是，将采用特定目标来实现一个详细的理论实验计划：（a）评估和澄清材料属性的相互依存关系，微观结构的几何形状以及纳米化粉末的处理参数，（（b）量化电流的限制，通过杀害纳米级的构造和构造，并将其用于制造和属性。为大型和净形状部分的纳米晶体材料。该项目将：（a）对尺寸尺寸在现场处理中的作用的基本知识，（b）阐明了负责提高现场烧结性能的特定机制，（c）为当前的设计以及为设计的设计，为当前的设计以及设计的设计，为设计和优化的设计提供了合理的基础。 此外，我们还将生成纳米晶材料的相当大型标本，这些标本将广泛地以结构，缺陷和机械性能为特征。晶粒尺寸小于100 nm的结构材料的特征是异常高的强度，硬度和磨损耐药性，以及良好的疲劳性耐药性。 该项目的重点是由现场辅助烧结产生的大量纳米晶材料的制造和表征，这些材料可以从纳米粉中产生近乎净形的散装组件，并在加工过程中保留微观结构的规模。开发用于制造批量纳米级材料的科学加工基础将是朝着这种令人兴奋的新型材料商业化的重要一步，这些材料可以保留晶粒尺寸并结合了异常的特性。两所大学之间的合作提议将提供协同效果，以增强Drexel University在加利福尼亚大学戴维斯大学的实验中进行的建模和纳米过程的理解。研究计划中的教育和培训的整合将通过开发Drexel和UCD学生在“ Bulk Nananomeatials的制造”上开发一个研讨会课程来实现。我们将继续让本科生参与REU补充剂的研究。