BRIGE: Engineering the Mechanisms Controlling Durability of High Temperature Ceramic Coatings for Energy Efficiency

这项扩大参与工程研究启动拨款（bridge）奖为实现控制和增强用于先进涡轮技术的高温陶瓷涂层系统或热障涂层的耐久性的目标提供支持。为了提高高效发电系统的效率，降低排放，这些涂层必须具有更高的耐久性，以适应更高的涡轮温度和燃料杂质。这将通过深入研究热机械和污染环境的降解机制来实现，从而制定缓解解决方案。将利用高分辨率同步x射线衍射和压电光谱技术与操作环境相结合的最新进展来研究多层高温陶瓷涂层内的应变演变。选定的缓解方案，重点是覆盖涂层，以防止污染物渗透，将探讨评估对多层涂层系统应变顺应性的影响。研究结果将揭示热机械环境和污染物对涂层顺应性和寿命的直接和长期影响。研究结果将有助于通过材料和工艺修改来缓解这种情况，以实现这些涂层在能源应用中的耐久性和可靠性。这项工作的重要意义在于，有可能使一种新型陶瓷涂层适用于使用替代燃料的涡轮机的清洁和高效运行。通过高温涂层的进步来满足这些操作环境，该研究在实现下一代涡轮机技术的可靠性和能效目标方面具有深远的社会效益。研究目标将与旨在通过同步加速器设施的独特研究经验和指导扩大参与和鼓励早期对工程研究的兴趣的努力相结合。

This Broadening Participation Research Initiation Grants in Engineering (BRIGE) award provides support to meet goals to control and enhance the durability of high temperature ceramic coating systems or thermal barrier coatings for advanced turbine technology. Advances in high efficiency power generation systems that produce lower emissions must be accompanied by enhanced durability of these coatings to higher turbine temperatures and fuel impurities. This will be achieved through in-depth studies on degradation mechanisms from thermo-mechanical and contaminant environments, leading to the development of mitigation solutions. Recent advances integrating high-resolution synchrotron X-ray diffraction and piezospectroscopic techniques in situ with operational environments will be utilized to study the evolution of strain within the multilayered high temperature ceramic coatings. Selected mitigation solutions, with a focus on overlay coatings to prevent contaminant infiltration, will be explored to assess effects on the strain compliance of the multi-layer coating system. The outcome of the novel studies will unravel the immediate and long-term effects of thermo-mechanical environment and contaminants on the coating compliance and life. Results will enable mitigation through material and process modifications, to achieve durability and reliability of these coatings for energy applications.The significance of the proposed work is in the potential for enabling a new class of ceramic coatings applicable to the clean and efficient operation of turbines with alternative fuels. Through the advancement of high temperature coatings to meet these operating environments, the research has far reaching societal benefits in achieving reliability and energy efficiency goals for the next generation turbine technology. Research goals will be integrated with efforts aimed at broadening participation and encouraging early interest in engineering research through unique research experiences at a synchrotron facility as well as mentoring.