Mass production of β-silicon carbide nanofibers by the novel method of Forcespinning

Authors

Alfonso Salinas, University of Texas-Pan American

Date of Award

12-2013

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Mechanical Engineering

First Advisor

Dr. Karen Lozano

Second Advisor

Dr. Arturo Fuentes

Third Advisor

Dr. Horacio Vasquez

Abstract

Non-oxide Ceramics such as silicon carbide have very unique properties, for example high toughness, thermal stability, wear resistant, and thermal shock resistance these properties make these ceramic fibers excellent for high temperature applications. Here we present the development of Silicon Carbide nanofibers utilizing a Polystyrene/Polycarbomethylsilane solution as the precursor materials. The Forcespinning ® was performed under a controlled nitrogen environment to prevent fiber oxidation. Characterization was conducted using scanning electron microscopy, x-ray diffraction, and thermogravimetric analysis. The results show successful formation of high yield, long continuous bead-free nanofibers with diameters ranging from 280nm to 2 micron depending on the selected processing parameters. The sintered precursors show formation of SiC nanofibers with a beta phase crystalline structure and oxygen content below 15%.

Comments

Copyright 2013 Alfonso Salinas. All Rights Reserved.

https://www.proquest.com/dissertations-theses/mass-production-beta-silicon-carbide-nanofibers/docview/1501926305/se-2

Granting Institution

University of Texas-Pan American