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.

该研究计划的总体目标是合成含有金属硫连接的新型前体；对参与前体形成和硫化物陶瓷的结构演化所涉及的分子过程的基本了解；并将前体化学与密集陶瓷的微结构和光学性质相关联。 在研究中，选择立方腺硫化物作为代表性系统。 还可以选择其他硫化物，例如硫化钛，硫化锌和硫化硅。 %% %%这项拟议的研究旨在使用改良的金属烷氧化物和金属硫烷氧化物来合成对氧气具有强亲和力的反应性金属的硫化物陶瓷。 这些金属包括灯笼，钛，锌和甘油。 这项研究将寻求对参与前体形成和随后硫化物陶瓷进化的分子过程的基本理解。 这项研究应增强我们在非氧化物硫化物陶瓷的受控化学合成领域的知识。