Reinforcing Mechanisms of Carbon Nanotube Metallic Nanocomposites

碳纳米管金属纳米复合材料的增强机制

• 批准号: 0700666
• 负责人: Quanfang Chen
• 金额: $ 22.5万
• 依托单位: The University of Central Florida Board of Trustees
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-05-01 至 2012-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0700666&HistoricalAwards=false
• 关键词: Reinforcing; Mechanisms; Carbon; Nanotube; Metallic

The goal of this work is to understand the fundamental issues affecting reinforcement efficiency in carbon nanotube reinforced metallic composites. The objectives of the research are to: 1) Develop efficient simulation methods in order to better study the mechanical properties of carbon nanotube reinforced metallic composites; 2) Establish efficient experimental methods to evaluate reinforcement mechanisms and the efficiency of carbon nanotube reinforced metallic composites; 3) Understand important factors that determine mechanical properties of carbon nanotube reinforced metallic composites; 4) Establish relationships between the mechanical strength of carbon nanotube reinforced metallic composites and the factors that influence it. The various research approaches consist of material synthesis, experimental characterization, microstructure characterization, and analytical investigations. Metallic materials with strong mechanical strengths are important for developing advanced engineering systems. However, pure metals normally have a low strength. Fibers have been proven efficient to improve metals' strength by forming composites. Carbon nanotubes have proven much stronger than conventional fibers and therefore they are potentially an ideal reinforcement material in developing advanced composites. However, the interfacial bonding between carbon nanotubes and metal matrices, as well as how to best use the miniature size and super high strength associated with carbon nanotubes to realize expected mechanical strength of composites are important issues but they still remain unclear. The proposed work, if successful, will provide guidelines for future, more efficient development of carbon nanotube reinforced metallic composites. In addition, curriculum renovation and workforce production will be realized by involving students to conduct the researched work.

这项工作的目的是了解影响碳纳米管增强金属复合材料的增强效率的基本问题。研究的目标是：1）开发有效的仿真方法，以更好地研究碳纳米管增强金属复合材料的机械性能； 2）建立有效的实验方法，以评估碳纳米管增强金属复合材料的增强机制和效率； 3）了解确定碳纳米管增强金属复合材料的机械性能的重要因素； 4）建立碳纳米管增强金属复合材料的机械强度与影响它的因素之间的关系。各种研究方法包括材料合成，实验表征，微观结构表征和分析研究。 具有强大机械优势的金属材料对于开发高级工程系统很重要。但是，纯金属通常具有低强度。通过形成复合材料，已证明纤维可以有效地提高金属的强度。事实证明，碳纳米管比常规纤维强得多，因此它们可能是开发晚期复合材料的理想增强材料。但是，碳纳米管和金属矩阵之间的界面键合以及如何最好地使用与碳纳米管相关的微型尺寸和超高强度来实现复合材料的预期机械强度是重要的问题，但仍然不清楚。拟议的工作，如果成功的话，将为未来的碳纳米管增强金属复合材料的更有效开发提供指南。此外，通过让学生进行研究工作来实现课程翻新和劳动力生产。