Non-Aqueous Molecular Processing of Sulfide Powder and Ceramics

硫化物粉末和陶瓷的非水分子加工

• 批准号: 9301014
• 负责人: Prashant Kumta
• 金额: $ 27.57万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-04-01 至 1997-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9301014&HistoricalAwards=false
• 关键词: Non; Aqueous; Molecular; Processing; Sulfide

The overall objectives of this research program are to synthesize novel precursors containing metal-sulfur linkages; to develop a fundamental understanding of the molecular processes involved in the formation of precursors and structural evolution of the sulfide ceramics; and, to correlate the precursor chemistry with the microstructure and optical properties of the dense ceramic. Cubic lanthanum sulfide is selected as the representative system in the studies. Other sulfides, such as titanium sulfide, zinc sulfide, and gallium sulfide, can also be selected for this study. %%% This proposed research aims to use modified metal alkoxide and metal thioalkoxide to synthesize sulfide ceramics of reactive metals which have strong affinity for oxygen. These metals include lanthanum, titanium, zinc, and gallium. This studies will seek fundamental understandings of the molecular processes involved in the formation of precursors and the subsequent evolution of sulfide ceramics. This study shall enhance our knowledge in the area of controlled chemical synthesis of non-oxide sulfide ceramics.

本研究计划的总体目标是 合成含有金属-硫键的新型前体; 发展对分子过程的基本理解 参与前体的形成和结构演变 硫化物陶瓷;并且，为了关联前体化学 与致密的微结构和光学性质 陶瓷。 选取立方硫化镧为代表 研究中的系统。 其它硫化物，如硫化钛， 硫化锌和硫化镓也可用于此 study. %%% 这项研究的目的是使用改性的金属醇盐， 金属硫代醇盐合成反应性硫化物陶瓷 对氧有很强亲和力的金属。 这些金属包括 镧、钛、锌和镓。 这项研究将寻求 参与分子过程的基本理解 前驱体的形成和随后硫化物的演化 陶瓷. 这项研究将增进我们在以下领域的知识： 非氧化物硫化物陶瓷的受控化学合成。