A Study of Ceramic Powder Preparation: Kinetics and Mechanisms of Precursor Precipitation

陶瓷粉体制备研究：前驱体沉淀动力学和机理

• 批准号: 8808912
• 负责人: Daina Briedis
• 金额: $ 4万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-01-01 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8808912&HistoricalAwards=false
• 关键词: Study; Ceramic; Powder; Preparation; Kinetics

The research is in the area of crystallization and precipitation of sparingly soluble salts to develop expertise in the study of the precipitation and processing of ceramic powders. The programs is complemented by collaboration with staff at Sandia National Laboratories in the development of novel experimental techniques. The objective of the research program is to develop a fundamental understanding of the mechanisms involved in the precipitation of ceramic precursor powders for the manufacture of electronic components. The electronic properties of ceramics are critically dependent on the chemical and physical properties of the precursor powder. Precipitation from solution is proposed as the chemical method for obtaining the desired powder properties. In order to fully exploit this type of processing and control the end use properties of the ceramic, the mechanisms of precipitation are studied. The focus of the work is on the preparation of doped zinc oxide powders for ceramic varistors, but the techniques and analyses developed may be generally applied to other compounds and other ceramic material types.

这项研究是在难于溶解的盐的结晶和沉淀领域，以发展陶瓷粉末沉淀和加工研究的专门知识。与桑迪亚国家实验室的工作人员合作开发新的实验技术是对这些计划的补充。该研究计划的目的是对用于制造电子元件的陶瓷前驱体粉末的沉淀机理有一个基本的了解。陶瓷的电学性质在很大程度上取决于前驱体粉末的化学和物理性质。溶液沉淀被认为是获得所需粉末性能的化学方法。为了充分开发这种工艺，控制陶瓷的最终使用性能，研究了析出机理。这项工作的重点是陶瓷压敏陶瓷用掺杂氧化锌粉末的制备，但所开发的技术和分析可普遍应用于其他化合物和其他陶瓷材料类型。