Theory of Spark-Plasma Sintering

本研究旨在探讨放电等离子烧结（SPS）粉末零件的理论。SPS烧结主要包括高温、轴向压力和场（基于电流）辅助烧结的联合应用.潜在地，SPS具有许多优于传统粉末固结方法的显著优点，最终导致烧结产品的性能显著改善、制造成本低和环境友好。SPS的实际应用？然而，由于缺乏能够实现工艺预测性和优化的理论概念，光明的潜力受到限制。因此，迫切需要建立可靠的放电等离子烧结理论。除了其对粉末加工科学的根本重要性外，所开发的理论还将为基于SPS的粉末部件生产的实际问题提供协同解决方案，这些问题具有优化的微米和纳米结构。具有优化晶粒结构的散装粉末部件对于广泛的应用具有重要意义，包括航空航天、汽车、数据处理、电信和医疗领域。研究生，本科生和K-12学生将参加这项研究计划，这将有助于圣地亚哥州立大学（SDSU）的材料工程课程的发展和SDSU粉末技术实验室的进展。该项目还将加强两个联合博士项目的多学科发展：SDSU和加州大学圣地亚哥分校（UCSD）的工程科学项目;以及圣地亚哥州立大学（SDSU）和克莱蒙研究生大学（CGU）之间的计算科学。该项目由化学，生物工程，环境，工程&部（ENG）的土木、机械和制造创新（CMMI）部门的材料加工制造（MPM）计划。

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).