EAGER/Collaborative Research: Laser Sintering of Nanolayered Carbon Nanotube Paper for Functionally Gradient Ceramic Nanocomposites

EAGER/合作研究：激光烧结纳米层碳纳米管纸用于功能梯度陶瓷纳米复合材料

• 批准号: 1144949
• 负责人: Benxin Wu
• 金额: $ 7.5万
• 依托单位: Illinois Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-15 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1144949&HistoricalAwards=false
• 关键词: EAGER; Collaborative; Research; Laser; Sintering

The research objective of this EArly-concept Grant for Exploratory Research (EAGER) project is to study the processing-structure-property relationship of functionally gradient nanolayered ceramic nanocomposite coating fabricated through a new paper making - laser sintering process, and test the hypothesis that the addition of carbon nanotubes can yield significant enhancement in mechanical properties of the ceramic coatings. It is a high-risk but high-payoff project because the new process is radically different from traditional approaches to make ceramic nanocomposite coating. This project's approach involves: 1) paper making process to manufacture nanolayered carbon nanotube paper consisting of both ceramic nanoparticles and carbon nanotubes, 2) laser sintering of the paper layer by layer to fabricate the functionally gradient coating, and 3) characterization of microstructures and mechanical properties of the fabricated nanocomposite coating. In the paper making - laser sintering process, good dispersion and controlled alignment of carbon nanotubes will be achieved in a suspension under an electric field. A suitable functionally gradient multilayered coating can be realized by laser sintering of the paper layer by layer, with varied and controlled compositions in each layer. The developed functionally gradient coating can potentially decrease the possibility of cracks and delamination at the coating-substrate interface significantly. Specifically, the grant will be used to demonstrate whether the addition of the carbon nanotubes will result in improved fracture toughness of the coating.This research will have a major impact on ceramic nanocomposite coating through advancing manufacturing science of ceramic nanocomposite coating and better understanding its structure-property relationship. The project will have broad potential impacts on aerospace, automotive, biomedical, and many other areas, where ceramic coatings play a key role. Some examples include the thermal barrier coatings in gas turbine engines, and the wear or corrosion resistance coatings needed in numerous medical implants and mechanical components.

这项早期概念研究授予的研究目标是研究通过新纸制作 - 激光烧结过程制造的功能梯度纳米层纳米层纳米复合涂层的加工结构 - 范围关系的关系，并测试以下假设，可以在机械涂层中添加大量的碳Nanotubes的假设。这是一个高风险但高付的项目，因为新过程与制造陶瓷纳米复合涂层的传统方法根本不同。 该项目的方法涉及：1）制造纸张制造过程，以制造由陶瓷纳米颗粒和碳纳米管组成的纳米碳纳米管纸，2）用一层对纸张进行激光烧结，以制造功能梯度涂层，以及3）3）表征的微观结构和机械性能的构造纳米涂层的表征。在纸制作 - 激光烧结过程中，将在电场下的悬架中实现良好的分散和控制碳纳米管的对齐。合适的功能梯度多层涂层可以通过逐层对纸张的激光烧结来实现，每一层中都有多样化和受控的组成。开发的功能梯度涂层可以显着减少在涂层 - 基底界面处的裂纹和分层的可能性。具体而言，该赠款将用于证明碳纳米管的添加是否会改善涂层的裂缝韧性。这项研究将通过推进陶瓷纳米复合材料的制造科学并更好地理解其结构 - 特质的关系，从而对陶瓷纳米复合涂层产生重大影响。该项目将对航空航天，汽车，生物医学以及许多其他领域产生广泛的潜在影响，陶瓷涂料起着关键作用。 一些示例包括燃气轮机发动机中的热屏障涂层，以及许多医疗植入物和机械组件中所需的耐磨性抗涂层。