Novel Brush Plating for In Situ Fabrication of Metallic Nanocomposites

用于金属纳米复合材料原位制造的新型刷镀

• 批准号: 0409650
• 负责人: Quanfang Chen
• 金额: $ 15.6万
• 依托单位: The University of Central Florida Board of Trustees
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-05-01 至 2007-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0409650&HistoricalAwards=false
• 关键词: Novel; Brush; Plating; Situ; Fabrication

The effectiveness of the reinforcement of carbon nanotubes (CNTs) in most composites so far developed has been disappointing. This is mainly attributed to poor interfacial bonding and poor alignment as well as CNTs' waviness in the composite. Metallic matrix composites can be successfully developed to meet strength and anti wear applications where strength to mass ratio is not strict as in the space applications related. PI plans to study the novel brush plating for the fabrication of CNTs reinforced metallic composite coatings. The electrolyte ("ink") consisting CNTs and the metallic ions will be developed for brush plating process. A brush applicator will be developed to realize the CNTs reinforced metallic coatings simultaneously. Efforts will be made on brush plating to achieve the desired CNTs alignment and straightness, etc. A through characterization study will be conducted, in terms of coating's hardness, friction and wear, tensile strength, and microstructure. The objectives of this work are: 1) Develop a novel cost effective brush plating method of CNTs reinforced metallic coating fabrication for surface engineering applications; 2) Provide a fundamental understating of how brush plating electrolytes and plating parameters can be used to control the CNTs reinforced metallic composite coating's quality; 3) Understanding CNTs' alignment and waviness stretching mechanism with mechanical work and electrical field during brush plating; 4) Performing various characterization study of the CNT reinforced coatings made by brush plating, including hardness, tensile strength, friction and wear, and microstructure analysis.Intellectual Merit: The proposed research will be the first of such effort to develop an in situ fabrication method of CNTs reinforced metallic composite coatings with brush plating co-deposition method. The novel brush plating co-deposition is expected to overcome underachievement identified in CNTs reinforced polymer composites where interfacial bonding and CNT alignment as well as CNTs' waviness are issues responsible for the underachievement in reinforcement. The success of this work will result in super robust CNTs reinforced metallic nanocomposite coatings for surface engineering applications to meet friction and wear requirements. Theoretical breakthrough is expected on the reinforcement mechanism of carbon nanotubes reinforced metallic composites.Broader Impacts: The proposed research has vast potential applications in surface engineering and broad impacts on science and engineering and huge benefits to society as a whole. The composite coatings will also find broad applications in the thermal management of power electronics because it can be used as ultra high thermal conductors or heat exchangers/spreaders. The composite coatings can be widely used to develop excellent electrical conductors. The brush plating fabricated CNTs reinforced metallic coatings can be used to fabricate MEMS/NEMS devices or components, as brush plated composite filed in predefined micro/nano molds can be released later by removing the molds and separated from the substrate. Graduate students and undergraduate students will involve in the proposed research. The research results will be introduced timely on the web page of PI's Laboratory, Efforts will be made to publish as mush as possible the research results in various professional journals and conferences.

到目前为止，大多数复合材料中碳纳米管（CNT）增强的有效性令人失望。这主要归因于界面粘结较差，对齐不良以及复合材料中的CNT挥发性。可以成功开发金属基质复合材料，以满足强度和抗磨损应用，在该应用中，强度与质量比并不像相关的空间应用中的强度比。 PI计划研究用于制造CNT增强金属复合涂层的新型刷板。将开发组成CNT和金属离子的电解质（“墨水”）用于刷板过程。将开发刷子涂抹器，以同时实现CNTS增强金属涂料。将在刷板上做出努力，以实现所需的CNT对准和直率等。这项工作的目标是：1）开发一种新型的CNT钢筋金属涂料制造的新型成本有效的刷子镀层方法，用于表面工程应用； 2）基本低估了如何使用刷子电镀电解质和电镀参数来控制CNT增强金属复合涂料的质量； 3）了解CNT的对齐和波浪伸展机理，并在刷板过程中使用机械工作和电场； 4）对CNT钢筋铺板制造的CNT增强涂层进行各种特征研究，包括硬度，拉伸强度，摩擦和磨损以及微观结构分析。智能优点：拟议的研究将是开发与CNT的原位制造方法的第一个努力，该方法具有CNTS的加固金属合成涂层，并使用刷子平板板层板层共构层。有望在CNTS增强聚合物复合材料中确定的新型刷子镀板共同沉积，其中界面键合和CNT对准以及CNT的波动是导致增强成绩不佳的问题。这项工作的成功将导致超强的CNTS增强金属纳米复合涂料，用于表面工程应用，以满足摩擦和磨损要求。预计在碳纳米管的增强机制方面有望进行理论突破。Boader的影响：拟议的研究在表面工程中具有巨大的潜在应用，并且对科学和工程的广泛影响以及对整个社会的巨大利益。复合涂料还将在电力电子的热管理中找到广泛的应用，因为它可以用作超高热导体或热交换器/撒布机。复合涂料可广泛用于开发出色的电导体。刷子制造的CNT加固金属涂层可用于制造MEMS/NEMS设备或组件，因为在预定义的微型/纳米模具中提交的刷子板条复合材料可以稍后释放，以稍后删除模具并与子材料材料分离。研究生和本科生将参与拟议的研究。研究结果将及时在PI实验室的网页上介绍，将努力在各种专业期刊和会议上发表尽可能糊涂的研究。