US-Turkey Cooperative Research: Characterization and Processing of Oxide Powders and Compacts

美国-土耳其合作研究：氧化物粉末和压块的表征和加工

• 批准号: 0322622
• 负责人: C Carter
• 金额: --
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0322622&HistoricalAwards=false
• 关键词: US; Turkey; Cooperative; Research; Characterization

0322622 CarterDescription: This project supports a cooperative research between Dr. Barry Carter, Department of Chemical Engineering and Materials Science at the University of Minnesota (UM), Minneapolis, Minnesota and Dr. Mehmet Ali Gulgun, Department of Engineering and Natural Sciences, Sabanci University, Istanbul, Turkey. They plan to study the characterization and processing of oxide powders and compacts. The project emphasizes two important ceramic oxides, namely ceria and alumina, with which the two investigators are already independently working. Polycrystalline a-Al2O3 is one of the most important ceramics for industrial applications. Its strength, toughness, corrosion and wear resistance, and creep properties, for example, are closely related to its microstructure and interfacial chemistry. Extensive knowledge has been gathered in the literature about the influence of various impurities on the properties and microstructure of the ceramic. Analytical electron microscopy investigations, especially using energy-lossspectroscopy, will allow the study of the incipient formation of second phases, e.g. CA6, in highly doped alumina ceramics. The U.S. group's interest in ceria is due primarily to its critical role in chemical/mechanical polishing (CMP). The group in Turkey has experience in processing the same material for use in fuel cells. The collaboration will exploit the synergy of these two programs. Through collaboration with Oak Ridge National Laboratory (ORNL), the U.S. group has used EELS to probe the chemistry of ceria. This methodology will be applied to polycrystalline ceria samples, which have been doped and processed in Turkey using methods similar to those used to process alumina specimens. The U.S. team will provide the ceria material and, working with ORNL and the 3M Company, prepare and characterize the powders; the Turkish team will provide the expertise to process this material in a controlled manner. Scope: This project brings together a group in the USA which has been extensively working on the structural and chemical analysis of powders and their sintered products and a group in Turkey which is developing a program on the preparation and processing of high-purity powders. Both groups are including undergraduates and women in their research programs. The U.S. group has extensive interaction with other laboratories, e.g., ORNL, thus benefiting both the students and the other labs. Both Professors Carter and Gulgun have worked extensively on characterization of interfaces and interphases in alumina systems. The collaboration will involve the exchange of three graduate students, two from U. of Minnesota and one from Sabanci University.

0322622 CarterDescription：该项目支持明尼苏达大学（UM），明尼阿波利斯，明尼苏达州的化学工程与材料科学系Barry Carter博士与Mehmet Ali Gulgun博士，工程与自然科学系，Sabanci University，Sabanci University，Sabanci University，Sabanci University，Istanbul，Turkey。 他们计划研究氧化物粉末和紧凑型的表征和加工。 该项目强调了两种重要的陶瓷氧化物，即陶瓷和氧化铝，两名研究人员已经独立起作用。 多晶A-Al2O3是工业应用最重要的陶瓷之一。 例如，其强度，韧性，腐蚀性和耐磨性以及蠕变特性与其微观结构和界面化学密切相关。 文献中已经收集了有关各种杂质对陶瓷特性和微观结构的影响的广泛知识。 分析电子显微镜研究，尤其是使用能量光谱的研究，将允许研究第二阶段的初期形成，例如CA6，在高度掺杂的氧化铝陶瓷中。 美国对陶瓷的兴趣主要是由于其在化学/机械抛光（CMP）中的关键作用。 土耳其的小组具有处理相同材料以用于燃料电池的经验。该协作将利用这两个计划的协同作用。通过与Oak Ridge国家实验室（ORNL）的合作，美国集团使用鳗鱼来探究陶瓷化学。 该方法将应用于多晶陶瓷样品，这些样品已使用类似于处理氧化铝样品的方法在土耳其进行了掺杂和处理。美国团队将提供陶瓷材料，并与Ornl和3M公司合作，准备和特征粉末；土耳其团队将提供专业知识，以受控方式处理该材料。范围：该项目汇集了一个在美国的群体，该小组一直在研究粉末及其烧结产品的结构和化学分析以及土耳其的一个集团，该组织正在开发有关高纯粉的制备和处理的计划。 这两个小组都在其研究计划中包括本科生和妇女。美国小组与其他实验室（例如ORNL）进行了广泛的互动，从而使学生和其他实验室受益。 卡特教授和古尔贡教授都在氧化铝系统的界面和相互作用的表征上进行了广泛的工作。该合作将涉及三名研究生的交流，两名来自明尼苏达州的研究生，另一名来自Sabanci University。