Formation Modes and Nucleation Stage Structural Investigations of Oxynitride Glass-Ceramic Systems

氮氧化物微晶玻璃体系的形成模式和成核阶段结构研究

• 批准号: 8703721
• 负责人: Subhash Risbud
• 金额: $ 29.08万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-07-01 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8703721&HistoricalAwards=false
• 关键词: Formation; Modes; Nucleation; Stage; Structural

This research is structural investigation of the nucleation stage in multianion oxynitride glass ceramic materials, e.g. barium-aluminum-silicon oxynitrides, or magnesium-aluminum- silicon oxynitrides. The study will determine, using magic angle sample spinning nuclear magnetic resonance, the relationship of local microstructural units to nucleation phenomena. Glasses processed by conventional melting or by sol-gel techniques will be chemically analyzed, and thermal stability and microstructure will be determined. Differential thermal analysis, x-ray diffraction, small angle x-ray scattering, nuclear magnetic resonance, and electron microscopy will be used to characterize the specimens. The research will provide the knowledge base needed to fabricate new glass and glass ceramic materials having novel combinations of properties.

本研究是对多阴离子氮氧化物微晶玻璃材料中成核阶段的结构研究，如：BaO-Al-Si氧化物或镁-铝-硅氧化物。这项研究将利用幻角样品自旋核磁共振，确定局部微结构单元与成核现象的关系。对用常规熔融或溶胶-凝胶技术加工的玻璃进行化学分析，并测定其热稳定性和微观结构。用差热分析、x射线衍射、小角x射线散射、核磁共振和电子显微镜对样品进行表征。这项研究将为制造具有新颖性能组合的新型玻璃和微晶玻璃材料提供所需的知识基础。