GOALI: Nanodesign and Efficient Processing of Boron Carbide Nanocomposites

目标：碳化硼纳米复合材料的纳米设计和高效加工

• 批准号: 0620621
• 负责人: Kathy Lu
• 金额: --
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0620621&HistoricalAwards=false
• 关键词: GOALI; Nanodesign; Efficient; Processing; Boron

This research develops innovative nickel nanolayer coated boron carbide (B4C/Ni) composites. B4C has high melting point, high hardness, good chemical resistance, and low density. However, the high melting point and high hardness make B4C very difficult to process and intrinsically brittle. Currently used hot pressing is expensive and inefficient; simple mixing of B4C and other additives hampers the desired performances. This project is aimed at establishing the framework for systematic understanding and manuipulation of matter, and will deliver far more desired properties and processability than the current stochastic approach. The particle-based electroless coating explores new methodology in high temperature material design; the combustion driven compaction process accelerates the application and improvement of ultrahigh pressure compaction; and the pressureless sintering studies of B4C/Ni hold great promise for the advancement of the unexplored nanolayer activated-sintering. B4C/Ni nanocomposites have important applications in high temperature thermoelectric conversion, neutron absorption, cutting tools, and lightweight structural materials. With the knowledge gained on nano-coating and high-efficiency manufacturing, many hard-to-process high temperature materials can be re-designed. The program will provide important opportunities for Virginia Tech and industry to build alliance in nanomaterial research and development to accelerate nanotechnology transfer to industry. The proposed activities in engaging university faculty, students, and industry scientists will contribute greatly to enhancing U.S. manufacturing workforce. The outreach activities are targeted at three areas of nanotechnology: industry nanotechnology development, female engineering student retention, and high school nano-education.

这项研究开发了创新的镍纳米层涂层碳化钾（B4C/NI）复合材料。 B4C具有高熔点，高硬度，良好的耐化学性和低密度。但是，高熔点和高硬度使B4C非常难以处理和本质上的脆性。目前使用的热按压昂贵且效率低下。 B4C和其他添加剂的简单混合阻碍了所需的表演。该项目的目的是建立对物质进行系统理解和构造的框架，并将提供比当前随机方法更具期望的属性和加工性。基于粒子的电涂层探索了高温材料设计中的新方法；燃烧驱动的压实过程加速了超高压力压实的应用和改善； B4C/NI的无加压烧结研究对未开发的纳米层激活插图的发展具有巨大的希望。 B4C/Ni纳米复合材料在高温热电转换，中子吸收，切割工具和轻质结构材料中具有重要应用。随着对纳米涂层和高效制造的知识，可以重新设计许多难以处理的高温材料。该计划将为弗吉尼亚技术和行业提供重要的机会，以在纳米材料研发中建立联盟，以加速纳米技术转移到行业。与大学教师，学生和行业科学家一起参与的拟议活动将为提高美国制造业劳动力做出巨大贡献。外展活动针对纳米技术的三个领域：工业纳米技术的发展，女性工程学生保留和高中纳米教育。