Rapid Solid-State Synthesis of Materials

在这项研究中，复分解反应被用来制备耐火材料和重要的电子和磁性材料。这些反应对于多种材料的快速合成（2秒）是有效的。目标体系包括耐火主族硼化物、碳化物、氮化物和磷化物、导电耐火过渡金属氮化物和磷化物以及磁性稀土磷化物。此外，将特别努力改进制备亚稳态高温化合物的方法。进一步的研究将检查陶瓷材料的加工，特别是研究不同的结晶度和粒度对热压样品的致密性和机械性能的影响。由于在高温下需要长时间的反应，直接的固态反应常常变得复杂。复分解反应可以在几秒钟内制备材料。在这项研究中，复分解反应被用来制备耐火材料和重要的电子和磁性材料。探讨不同的结晶度和粒度对热压样品致密化和力学性能的影响。＊＊＊

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. ***