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Magnetic-Field-Assisted Assembly of Ordered Multifunctional Ceramic Nanocomposites for Extreme Environments

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Technical Report,15 Sep 2012,14 Nov 2017

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Clemson University Clemson United States

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The goal of this project was to explore physics, materials and surface chemistry behind the polymer-based route towards creation of magnetic ceramic composites out of magnetic nanorods and nanofibers. We successfully developed the experimental protocol aimed to make mullite coating films with embedded magnetic inclusions. Electrospun mullite nanofibers with incorporated magnetic nanoparticles, SiC whiskers decorated with magnetic nanoparticles, and Nickel nanorods were successfully embedded into mullite films. We developed an experimental procedure guarantying the reproducible preparation of magnetic silicon carbide mSiC whiskers for the use as fillers in the mullite based composite films. We studied kinetics of collective alignment of nanorods and fibers in mullite precursor undergoing a solgel transition under uniform magnetic field. These studies resulted in a successful development of the experimental protocol for controlled alignment of nanorodsnanofibers in thin films prior to the complete solidification of the film. Crack-free magnetic composite films with mullite matrix have been synthesized and characterized. Fifteen papers were published based on the results of this project.

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