U.S.-Egypt Cooperative Research: Direct (Gel) Casting of Piezoelectric Ceramic Parts

项目描述：该项目支持Rutgers大学陶瓷与材料工程系Ahmad Safari博士和埃及Helwan中央冶金研究与发展研究所（CMRDI） Emad Ewais博士的合作研究。智力优势：该项目的目标是研究和实现直接（凝胶）铸造法作为制造压电陶瓷物体的成型技术。在这项研究中，几种PZT陶瓷浆料将通过胶体法制备，并进行了彻底的检查。在高固体负荷的水介质中制备浆料的可能性将通过流变学测量进行研究。将检查浆料的浇铸和凝胶。为了比较，热等静压（HIP）也将用于生产相同的物体，以基准凝胶铸造的有效性。本研究将研究应用所提出的成形技术制造具有完整或接近完整密度的复杂形状物体的可能性。产品的质量将通过微观结构、物理、机械、热学和电学性能的表征来评估。这次调查的结果将被分析和报告。在这个项目中，两家机构的专业知识将被整合，以开发适合凝胶铸造的材料，并制造复杂的压电驱动器。在过去的几年里，罗格斯大学的团队已经开发出了各种压电传感器和执行器的加工和制造能力。埃及团队在开发各种陶瓷浆料方面具有专业知识。两个团队的专业知识是互补的，将使他们能够达到项目目标。更广泛的影响：拟议的项目是罗格斯大学和CMRDI之间的合作努力，允许美国和埃及团队之间交流思想和专业知识。这个项目需要一位博士后科学家的支持。这也为埃及合作伙伴提供了一个很好的机会，使他们更加熟悉和发展压电材料和执行器领域的专业知识。研究工作的发现将在当地和国际会议上提出并出版，以便在陶瓷和铁电界传播信息。该项目得到了美国-埃及联合基金项目的支持，该项目向两国的科学家和工程师提供赠款，以开展这些合作活动。

0513690SafariDescription: This project supports a collaborative research between Dr. Ahmad Safari, Department of Ceramics and Materials Engineering, Rutgers University and Dr. Emad Ewais, Central Metallurgical Research and Development Institute (CMRDI), Helwan, Egypt. Intellectual Merit: The goal of the project is to study and implement direct (gel) casting method as the forming technique for the fabrication of piezoelectric ceramic objects. In this study, several PZT ceramic slurries will be prepared via colloidal process and examined thoroughly. The possibility of preparing slurries in aqueous medium with high solid loading will be investigated using rheological measurements. Casting and gelation of the slurries will be examined. For comparison purposes, hot isostatic pressing (HIP) will also be used to produce the same objects in order to benchmark the effectiveness of the gel casting. This investigation will examine the possibility of applying the proposed forming technique to manufacture complex shape objects with full or near full density. The quality of the products will be evaluated through characterization of microstructure, and physical, mechanical, thermal and electrical properties. The results of this investigation will be analyzed and reported. In this program, the expertise of the two institutions will be integrated to develop suitable materials for gel casting and to fabricate complex piezoelectric actuators. In the past several years, the Rutgers team has developed processing and manufacturing capabilities for various piezoelectric sensors and actuators. The Egyptian team has expertise in developing slurries for various ceramics. The expertise of both teams iscomplementary and will enable them to reach the project objectives. Broader Impact: The proposed program is a collaborative effort between Rutgers and CMRDI and allows exchange of ideas and expertise between the American and Egyptian teams. This project involves support of a postdoctoral scientist. It also provides a good opportunity for the Egyptian partner to become more familiar with, and develop expertise in the field of piezoelectric materials and actuators. The finding of research work will be presented in local and international conferences and published to disseminate the information within the ceramics and ferroelectric communities. This project is being supported under the US-Egypt Joint Fund Program, which provides grants to scientists and engineers in both countries to carry out these cooperative activities.