Rapid Solid-State Synthesis of Materials

材料的快速固态合成

• 批准号: 9315914
• 负责人: Richard Kaner
• 金额: $ 36.49万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-05-01 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9315914&HistoricalAwards=false
• 关键词: Rapid; Solid; State; Synthesis; Materials

9315914 Kaner In this research, metathesis reactions are used to prepare refractory and electronically and magnetically important materials. These reactions are effective for the rapid synthesis ( 2 s) of a large variety of materials. Targeted systems include refractory main group borides, carbides, nitrides and phosphides and conductive refractory transition metal nitrides and phosphides and magnetic rare earth phosphides. Additionally, special efforts will be made to refine methods for the preparation of metastable high temperature compounds. Further studies will examine the processing of ceramic materials, specifically studying the effects of varying crystallinity and particle size on the densification and mechanical properties of hot-pressed samples. % % % Direct solid-state reactions often are complicated by the need for long reaction times at elevated temperatures. Metathesis reactions allow the preparation of materials in seconds. In this research, metathesis reactions are used to prepare refractory and electronically and magnetically important materials. The effects of varying crystallinity and particle size on the densification and mechanical properties of hot-pressed samples will be explored. ***

9315914卡纳在这项研究中，复分解反应被用来制备耐火材料和具有重要电学和磁性的材料。这些反应对于多种材料的快速合成是有效的(S 2)。目标系统包括难熔主族硼化物、碳化物、氮化物和磷化物以及导电难熔过渡金属氮化物和磷化物和磁性稀土磷化物。此外，还将特别努力改进亚稳态高温化合物的制备方法。进一步的研究将考察陶瓷材料的加工，特别是研究不同的结晶度和颗粒尺寸对热压样品的致密化和机械性能的影响。直接固相反应通常因为需要较长的高温反应时间而变得复杂。化合反应可以在几秒钟内制备出材料。在这项研究中，复分解反应被用来制备耐火材料和具有重要电学和磁性的材料。将探索不同结晶度和颗粒大小对热压样品致密化和机械性能的影响。***