Theory of Spark-Plasma Sintering

本研究的目的是研究粉末成分的放电等离子烧结(SPS)理论。SPS主要包括高温、轴向压力和电场(电流基)辅助烧结的联合应用。与传统的粉末固结方法相比，SPS具有许多潜在的显著优势，最终显著改善了烧结产品的性能，降低了制造成本，并对环境友好。SPS的实际实施情况？然而，由于缺乏能够实现工艺预见性和最优化的理论概念，光明的潜力受到限制。因此，迫切需要发展可靠的放电等离子烧结理论。除了对粉末加工科学的基本重要性外，开发的理论还将使基于SPS生产具有优化微结构和纳米结构的粉末组件的现实问题能够实现协同解决方案。具有优化颗粒结构的块状粉末组元在航空航天、汽车、数据处理、电信和医疗等领域的广泛应用中具有重要意义。研究生、本科生和K-12学生将参与这项研究计划，这将有助于圣地亚哥州立大学(SDSU)材料工程课程的开发和SDSU粉末技术实验室的进步。该项目还将促进两个联合博士项目的跨学科发展：圣地亚哥州立大学和加州大学圣地亚哥分校(UCSD)在工程科学方面的合作，以及圣地亚哥州立大学(SDSU)和克莱蒙特研究生院(CGU)在计算科学方面的合作。该项目由化学、生物工程、环境和运输系统(CBET)部门的热传输过程(TTP)项目和土木、机械和制造创新(CMMI)部门的材料加工与制造(MPM)项目共同资助。

The objective of this research is to investigate the theory of spark-plasma sintering (SPS) of powder components. SPS consists essentially of conjoint application of high temperature, axial pressure and field (electric current - based) assisted sintering. Potentially, SPS has many significant advantages over the conventional powder consolidation methods, ultimately resulting in dramatically improved properties of sintered products, low manufacturing costs, and environmental friendliness. Practical implementations of the SPS? bright potential, however, are limited by the lack of theoretical concepts enabling the process predictiveness and optimization. Thus, the development of reliable theory of spark-plasma sintering is urgently needed. Besides its fundamental importance for the powder processing science, the developed theory will enable synergistic solutions for the real-world problems of the SPS-based production of powder components with optimized micro- and nanostructure. Bulk powder components with optimized grain structure are of significant importance for the broad spectrum of applications, including aerospace, automotive, data processing, telecommunications, and medical areas. Graduate, undergraduate, and K-12 students will participate in this research program, which will contribute to the development of the Materials Engineering curriculum of the San Diego State University (SDSU) and to the progress of the SDSU Powder Technologies Laboratory. The program will also enhance the multi-disciplinary development of two Joint Doctoral Programs: between SDSU and University of California, San Diego (UCSD) in Engineering Sciences; and between San Diego State University (SDSU) and Claremont Graduate University (CGU) in Computational Sciences.This project is jointly funded by the Thermal Transport Processes (TTP) Program, of the Chemical, Bioengineering, Environmental, and Transport Systems (CBET) Division and by the Materials Processing & Manufacturing (MPM) Program, of the Civil, Mechanical, and Manufacturing Innovation (CMMI) Division, both within the Directorate for Engineering (ENG).