GOALI: Oxide Scale Development in Coated High-Temperature Alloys for Solid-Oxide Fuel Cell Interconnects

该项目的研究目标是阐明固体氧化物燃料电池（SOFC）高温合金互连件上导电氧化物涂层结构演变的机制。 该研究将导致更基本的了解相互扩散，反应层的形成和外加电场的氧化物涂层的结构和电气特性的作用。该研究方法利用脉冲激光沉积来生产具有当前一代SOFC涂层和夹层的化学性质的模型涂层，但其形态更适合于良好控制的机械研究。 模型涂层和夹层的沉积后结构发展将采用先进的离子束和电子束分析技术表征为暴露条件的函数。从模型涂层/夹层获得的数据将被用作氧化皮发展和性能的多层模型的关键输入。该项目的成功完成将为更好地预测现有涂层合金SOFC互连件的寿命和具有上级性能的新涂层的性能提供基础。该GOALI项目是康涅狄格大学（UConn）和联合技术研究中心（UTRC）之间的合作，将涉及全方位的时间UConn研究生和UTRC员工追求UConn研究生学位的兼职基础上。这些学生将受益于正规的研究生教育和动手培训，通过参与在这两个网站的研究。学生们还将参与该组织更广泛的教育推广活动，旨在为当地K-12学生带来对MSE的欣赏。研究的主要成果将通过以下方式传播：在公开文献中发表，在会议上介绍，在UTRC举办的讲习班，以及将实例纳入外联材料。

The research objective of this Grant Opportunity for Academic Liaison with Industry (GOALI) project is to elucidate the mechanisms that are responsible for structural evolution in conductive oxide coatings on high-temperature alloy interconnects for solid oxide fuel cells (SOFCs). The research will result in a more fundamental understanding of the roles of interdiffusion, reaction layer formation and applied electric field on the structural and electrical characteristics of oxide coatings. The research approach utilizes pulsed laser deposition to produce model coatings with the chemistries of current generation SOFC coatings and interlayers but with morphologies that are better suited to well-controlled mechanistic studies. Post-deposition structural development in model coatings and interlayers will be characterized as a function of exposure conditions using advanced ion- and electron-beam analysis techniques. The data obtained from the model coatings/interlayers will be used as critical inputs to multi-layer models of oxide scale development and properties. The successful completion of this project will provide the basis for better predictive modeling of lifetimes for existing coated alloy SOFC interconnects and of the properties for new coatings with superior properties.This GOALI project is a collaboration between the University of Connecticut (UConn) and United Technologies Research Center (UTRC) and will involve both full-time UConn graduate students and UTRC employees pursuing UConn graduate degrees on a part-time basis. These students will benefit both from formal graduate education and from hands-on training through involvement in the research at both sites. The students will also be involved in the broader educational outreach activities of the group aimed at bringing an appreciation of MSE to local K-12 students. Key results from the research will be disseminated through: publication in the open literature, presentation at conferences, workshops held at UTRC, and integration of examples into outreach materials.