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Fabrication Of Ceramic Nanofibers And Effect Of Calcination Parameters On Grain Growth

Mokhtari Shabestari, Mehdi, Mokhtari

Abstract Details

2016, Master of Science, University of Akron, Chemical Engineering.
Electrospinning provides a straightforward method for generating continuous nanofibers. This technique has been used for many years to fabricate various types of nanofibers with different applications. Combining the electrospinning method and calcination process will result in fabrication of ceramic nanofibers. The unique characteristics of ceramic nanofibers such as high surface to volume ratio, high porosity and semi-conductivity make these material promising for advanced applications. Although they have unique characteristic behaviors, these nano materials have a major drawback; the brittleness has always been an issue for ceramic materials. According to the inverse Hall-Petch effect, it has been hypothesized that grain size has a direct effect on mechanical properties of ceramic nanofibers. This work consists of three objectives. In the first phase, aluminum acetate nanofibers are fabricated by the electrospinning method. This step is followed by controlled calcination process to investigate the effect of calcination parameters on grain size growth. Scanning electron microscopy (SEM) is used to inspect the morphology of as-spun and calcined nanofibers. Energy dispersive X-ray spectroscopy (EDS) was utilized for elemental analysis. X-ray diffraction spectroscopy (XRD) is used for grain size calculation and study crystalline structure of calcined samples. In the second phase, Mullite-like nanofibers are fabricated by using the electrospinning and calcination techniques and then characterized by SEM, EDS and XRD. The effect of surfactant on dispersion of nano silica powder has been studied. In the final phase, alumina nanofibers are deposited on two different types of silicon carbide (SiC) composites for mechanical/thermal reinforcement in cyclic high temperature applications.
Edward Evans (Advisor)
George Chase (Committee Member)
Gary Doll (Committee Member)
189 p.

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Citations

  • Mokhtari Shabestari, Mokhtari, M. (2016). Fabrication Of Ceramic Nanofibers And Effect Of Calcination Parameters On Grain Growth [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1462018118

    APA Style (7th edition)

  • Mokhtari Shabestari, Mokhtari, Mehdi. Fabrication Of Ceramic Nanofibers And Effect Of Calcination Parameters On Grain Growth. 2016. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1462018118.

    MLA Style (8th edition)

  • Mokhtari Shabestari, Mokhtari, Mehdi. "Fabrication Of Ceramic Nanofibers And Effect Of Calcination Parameters On Grain Growth." Master's thesis, University of Akron, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1462018118

    Chicago Manual of Style (17th edition)