CAREER: A Faculty Early Career Program in Development of Superhard Coatings for Improved Performances

职业生涯：开发超硬涂层以提高性能的教师早期职业计划

• 批准号: 9983535
• 负责人: Ashok Kumar
• 金额: $ 21万
• 依托单位: University of South Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-06-15 至 2006-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9983535&HistoricalAwards=false
• 关键词: CAREER; Faculty; Early; Career; Program

Superhard coating systems for next generation materials applications must exhibit a combination of physical properties which include excellent thermal and chemical stability, wear resistance, high hardness, toughness, and good adhesion. The goal of this CAREER program is to develop a means by which application specific coatings can be efficiently designed, using an integrated approach tailored towards rapid scale-up and industrial production. The specific objective of this study is to understand structure-property relationships in advanced engineering superhard coating materials prepared by pulsed laser assisted physical vapor deposition (PVD) and by filament assisted chemical vapor deposition (CVD) techniques for multifunctional applications. The pulsed laser deposition (PLD) process promises a new generation of exotic coatings which have superior adhesion, near theoretical densities, and very high hardness, and which, at the same time can be deposited at low temperature. Superhard coatings of carbon nitride (CNx), cubic boron nitride (c-BN), diamond-like carbon (DLC) and microlaminate coatings of metal/ceramic materials will be fabricated by the PLD method. Very-high density CVD plasma will be explored for rapid growth of transparent diamond films at low substrate temperature with desirable microstructure that provides better mechanical properties for manufacturing applications. Evaluation of mechanical properties will include nanoindentation, adhesion and wear tests. Microstructural analyses will include X-ray diffraction analysis for lattice structure, and SEM, TEM and AFM for grain structure and lattice microstructural information. Efforts will be made to work with the industrial partners in developing potential commercial products. An important feature of the project is the training of graduate and undergraduate students in a fundamentally and technologically significant area of Materials Science research related to synthesis, structure, properties and performance. The education plan involves the development of a module on 'Thin Film Technology' that illustrates key aspects of materials processing with appropriate emphasis on synthesis, selection of materials for substrate and film, deposition processes, microstructural development, mechanical properties, kinetics and thermodynamics, and applications in industrial sectors, for instruction in cross-disciplinary fields. The module will include multimedia teaching resources and in-class demonstration. Special attempts will be made to attract students from under represented groups and to train them in multidisciplinary research.

下一代材料应用的超智涂层必须表现出物理特性的组合，包括出色的热和化学稳定性，耐磨性，高硬度，韧性和良好的粘附。该职业计划的目的是开发一种方法，该手段使用针对快速扩大和工业生产量身定制的集成方法可以有效地设计特定的涂料。这项研究的具体目的是了解由脉冲激光辅助物理蒸气（PVD）制备的高级工程超级涂料材料的结构 - 特性关系，并通过用于多功能应用的细丝辅助化学蒸气沉积（CVD）技术。脉冲激光沉积（PLD）过程有望新一代的外来涂层，这些涂层具有优越的粘附，靠近理论的密度和非常高的硬度，并且可以在低温下沉积。 PLD方法将制造氮化碳（CNX），CNX），立方硼（C-BN），钻石样碳（DLC）和金属/陶瓷材料的微层面涂层的超级涂层。将探索非常高的密度CVD等离子体，以在低基材温度下使用理想的微观结构在低基材温度下快速生长，为制造应用提供更好的机械性能。机械性能的评估将包括纳米识别，粘附和磨损测试。微观结构分析将包括用于晶格结构的X射线衍射分析，以及用于晶粒结构和晶格微结构信息的SEM，TEM和AFM。将努力与工业合作伙伴一起开发潜在的商业产品。 该项目的一个重要特征是培训与综合，结构，财产和表现有关的材料科学研究的根本和技术重要领域的研究生和本科生。该教育计划涉及开发“薄膜技术”模块，该模块说明了材料处理的关键方面，并适当地强调合成，底物和膜的材料选择，沉积过程，微观结构发展，机械性能，动力学和热力学和热力学，以及在工业领域的应用，用于跨学科领域的教学。该模块将包括多媒体教学资源和课堂演示。将进行特殊尝试，以吸引来自代表的小组的学生，并在多学科研究中训练他们。