The Centrifugal Synthesis & Processing of Functionally Gradient Materials

本文提出了一个跨学科的研究计划，以一种新的技术合成功能梯度材料（FGM），这是一种具有空间梯度的复合材料。在燃烧合成过程中，利用离心力使熔融物料中的细颗粒发生相分离。该方案包括两类实验：燃烧合成与离心，热熔化金属与离心细颗粒进入熔体。本文选择了两种具有潜在商业应用潜力的体系进行研究：具有良好结构性能的金属-陶瓷和陶瓷-陶瓷复合材料，以及基于其在梯度折射率（GRIN）光学技术和量子点光电结构中的应用而选择的具有成分梯度的新型电光材料。%%%%本研究计划在燃烧合成过程中利用离心力引起熔融材料中细颗粒的相分离来合成功能梯度材料（FGM）。选择了两种具有潜在商业应用的系统进行研究：用于结构应用的金属陶瓷和陶瓷陶瓷复合材料，以及用于光学和光电子应用的电光材料。合成FGM的能力将大大增加商业应用的可能性。

This proposal outlined an interdisciplinary research program to synthesize, with a novel technique, functionally gradient materials (FGM), which are composites with a spatial gradient in composition. The novel process is to use centrifugal force to cause phase separations of fine particles in molten materials during the combustion synthesis. Two classes of experiments are included in the program: Combustion synthesis with centrifugation, and thermal melting of metals with centrifugation of fine particles into the melt. Two systems with potential commercial applications are selected for study: metal-ceramic and ceramic-ceramic composites with favorable structural properties, and novel electro-optic materials with compositional gradients chosen on the basis of their utility in gradient-index (GRIN) optical technology and quantum-dot optoelectronic structures. %%%% This study plans to synthesize functional gradient materials (FGM) using centrifugal force to cause phase separations of fine particles in molten materials during the combustion synthesis. Two systems with potential commercial applications are selected for study: metal-ceramic and ceramic-ceramic composites for structural applications, and electro-optic materials for optical and optoelectronic applications. The ability to synthesize FGM will increase the possibilities of commercial applications greatly.