Direct Measurement of Interfacial Energies in Ceramics

陶瓷界面能的直接测量

• 批准号: 2414106
• 负责人: Ricardo Castro
• 金额: $ 52.8万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-01-15 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2414106&HistoricalAwards=false
• 关键词: Direct; Measurement; Interfacial; Energies; Ceramics

NON-TECHNICAL DESCRIPTION: Ceramics are present in a multitude of technological solutions that help address the current and future global challenges. Applications range from electronics in mobile devices to sensors for biohazards, but the design and fabrication of finely controlled and predictable ceramics still face significant difficulties. This project takes a transformative approach to provide a missing piece of understanding on how to control the evolution of ceramic structures during processing and operations. By using experimental approaches utilizing sophisticated techniques, including quantification of microscale heat evolution- and high-resolution electron microscopy, the research introduces a method to measure interfacial energies – currently largely unknown – which hold the key for predictive manufacturing and design. The project also has important education components that focus on the promotion of engineering in middle and high schools with a series of educational activities based on the science behind superheroes. These are effective vehicles to inspire students to join science and engineering fields by discussing the fantastic universe of superheroes from a technological perspective. The project also provides training of undergraduate and graduate students in research and development in this strategic field, with graduates in this field typically finding positions in high-tech electronics companies. TECHNICAL DETAILS: The predictability of manufacturing and design of ceramics strongly relies on a solid understanding of the thermodynamics of interfaces. Direct measurements of interfacial energies is therefore a key element for evolution of the field into being less dependent on empirical evidences and trends. This project applies microcalorimetric techniques to measure interface energies of ceramics, using yttrium oxide as a model system, and combines the results with detailed microstructural and structural analyses to deliver unprecedented data. The first research product presents a methodology for broad application in other materials, which is complemented by a careful study on how to control interfacial energies. Such control optimizes compositional design in industries, enabling more energy and cost-efficient products, and improves reliability during operation. From an education perspective, students are mentored and conduct research with strategic materials and processes, receiving training on highly advanced techniques to be applied in their future careers as materials’ professionals.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术描述：陶瓷存在于多种技术解决方案中，有助于应对当前和未来的全球挑战。从移动设备中的电子设备到生物危害传感器的应用范围，但是精心控制和可预测的陶瓷的设计和制造仍然面临很大的困难。该项目采用了一种变革性的方法来提供有关如何控制处理和操作过程中陶瓷结构演变的缺失理解。通过使用实验方法利用复杂的技术，包括微观传热和高分辨率电子显微镜的定量，该研究引入了一种测量界面能量的方法（目前在很大程度上未知），这是预测性制造和设计的关键。该项目还具有重要的教育组成部分，该组成部分着重于在中学和高中促进工程学，并根据超级英雄背后的科学进行一系列教育活动。这些是有效的工具，可以通过从技术角度讨论超级英雄的奇妙宇宙来激发学生加入科学和工程领域。该项目还提供了该战略领域研发的本科生和研究生的培训，该领域的毕业生通常在高科技电子公司中找到职位。技术细节：陶瓷制造和设计的可预测性在很大程度上依赖于对界面热力学的扎实理解。因此，对界面能量的直接测量是该领域进化为较少依赖经验证据和趋势的关键要素。该项目使用微浮力技术来测量陶瓷的界面能量，使用氧化Yttrium作为模型系统，并将结果与​​详细的微观结构和结构分析相结合，以提供前所未有的数据。第一个研究产品介绍了一种在其他材料中进行广泛应用的方法，该方法是通过仔细研究如何控制界面能量完成的。这种控制优化了行业中的复合设计，从而实现了更多的能源和具有成本效益的产品，并提高了操作过程中的可靠性。从教育的角度来看，学生受到指导并通过战略材料和流程进行研究，接受有关材料专业人士的未来职业的高级技术的培训。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子优点和更广泛影响的审查标准来通过评估而被认为是珍贵的支持。