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Zirconium diboride nanofiber generation via microwave arc heating
Tyson Baldridge1, Mool C Gupta
1Charles L Brown Department of Electrical and Computer Engineering, University of Virginia, Thornton Hall, 351 McCormick Road, Charlottesville, VA 22904-4743, USA.
Nanotechnology
|August 11, 2011
Summary
Ultrahigh temperature zirconium diboride (ZrB2) nanofibers were synthesized using microwave arc heating. These novel nanofibers exhibit potential for applications in aerospace and other extreme environments.
Area of Science:
- Materials Science
- Nanotechnology
- Ceramics Engineering
Background:
- Zirconium diboride (ZrB2) is an ultrahigh temperature ceramic known for its exceptional properties.
- Developing advanced nanostructures of ZrB2 is crucial for enhancing its performance in demanding applications.
Purpose of the Study:
- To produce ultrahigh temperature zirconium diboride (ZrB2) nanofibers.
- To characterize the morphology, composition, and crystallographic orientation of the synthesized nanofibers.
Main Methods:
- Microwave arc heating of micron-sized ZrB2 powder.
- Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) for morphology.
- Energy dispersive X-ray spectroscopy (EDS), electron energy loss spectroscopy (EELS), and selected area electron diffraction (SAED) for composition and crystallography.
Main Results:
- Successfully produced high aspect ratio ZrB2 nanofibers via microwave arc heating.
- Arcing during heating led to rapid heating and solidification, forming the nanofibers.
- Characterization confirmed the presence of Zr, B, N, Al, and O, along with specific crystallographic orientations.
Conclusions:
- Microwave arc heating is an effective method for synthesizing ZrB2 nanofibers.
- The synthesized nanofibers possess properties suitable for aerospace and other harsh environments.
- Further research can explore optimizing synthesis and exploring specific applications.
