Synthesis and characterization of boron doped alumina stabilized zirconia fibers

Uslu, İbrahım; Tunç, Tuncay; Keskin, Selda; Öztürk, M. Kemal

doi:10.1007/s12221-011-0303-1

Cited by 9 publications

(8 citation statements)

References 41 publications

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“…This study is similar to our recent publication appeared at [19] where we prepared Boron doped poly(vinyl) alcohol/zirconium acetate (PVA/Zr) nanofibers. In this study, we wanted to improve the properties of the composite material by using both boron oxide as a sintering aid to improve the densification of zirconia, to lower the sintering temperature and to increase the thermal shock resistance of the composite structures and, the yttrium oxide as a stabilizer to produce defective oxides with oxygen vacancies in the crystal structure.…”

Section: Introductionsupporting

confidence: 86%

Fabrication and characterization of boron doped yttria‐stabilized zirconia nanofibers

Tunç

Uslu

2012

Polymer Engineering & Sci

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Boron doped and undoped poly(vinyl) alcohol/zirconium‐yttrium acetate (PVA/Zr‐Y) nanofibers were prepared by electrospinning using PVA as a precursor. The effect of boron doping was investigated in terms of solution properties, morphological changes and thermal properties. The effect of boron doping on calcined yttria stabilized zirconia (YSZ) fibers was evaluated by X‐ray diffraction (XRD) and X‐ray photoelectron spectroscopy analysis. XRD analysis revealed varying amounts of monoclinic and tetragonal zirconia present in the undoped fibers calcined at 800°C. The average crystallite sizes of the undoped YSZ were increased from 9.28 to 22.79 nm with calcining temperature increasing from 250 to 800°C. The crystallite size was enhanced with boron doping. The systematic evolution of morphological features in the spun and the processed fibers were employed by scanning electron microscopy. POLYM. ENG. SCI., 2013. © 2012 Society of Plastics Engineers

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Section: Introductionsupporting

confidence: 86%

Fabrication and characterization of boron doped yttria‐stabilized zirconia nanofibers

Tunç

Uslu

2012

Polymer Engineering & Sci

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“…However, these plasticizers were volatilized during the melt electrospinning process because of high temperature and leaving long‐chain molecule. Thus the increased content of long molecule chains resulting in slightly high melting temperature to the spun fibers . Two unclear melting peaks marked in a rectangle box, which has been enlarged for display, appear for cured fibers (curve d).…”

Section: Resultsmentioning

confidence: 99%

“…Two unclear melting peaks marked in a rectangle box, which has been enlarged for display, appear for cured fibers (curve d). The peak at 65°C possibly because of more serious chain entanglement of cured fibers, which result in higher viscosity and cause restricted molecular chain movement, thereby leading to higher T m . Because of the exothermic heat from curing offsets part of the melting endothermic heat, the peak is flat.…”

Section: Resultsmentioning

confidence: 99%

Orthogonal design preparation of phenolic fiber by melt electrospinning

Xie

Chen

Ramakrishna

et al. 2015

J of Applied Polymer Sci

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Through orthogonal experimental methods, the melt electrospinning of pure phenolic fibers has been achieved. The preparation is based on an orthogonal experimental method, which was designed to investigate the optimal conditions for production through integrated effects of spinning temperature, gap between spinneret and collector, as well as applied voltage. We found that optimal spinning conditions at 1608C, a spinneret-to-collector gap of 8 cm, and applied voltage at 40 kV produce an average electrospun fiber diameter reaching 4.44 6 0.76 lm, with narrow variance distribution. The fibers were cured in a solution with 18.5% formaldehyde and 12% hydrochloric acid, heated from room temperature to 808C and maintained 1h. In this report, the morphology, structural changes, and heat resistance of the fibers are characterized. Obtained results reveal that curing the fiber reduces crystallization and improves heat resistance.

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“…It is a postulate that the doped nanofibres have a larger diameter than the undoped one, which is also found in our study, where the average diameter of C3 is 1.71 times higher than C2. This is a concept as per the findings of Uslu et al 3 in their study on boron-doped alumina-stabilised zirconia nanofibres produced by electrospinning. 3 The dopant-based zirconia nanofibres showed good round and even shaped fibres with an appreciable diameter, as per the literature.…”

Section: Morphological Studies Of the Developed Nanofibresmentioning

confidence: 74%

“…2 Electrospinning is considered as one of the better synthesis methods due to its versatility, inexpensive fabrication, simple construction and ability to be used for various polymers. 3,4 Ceramic-based nanofibres possess good mechanical strength, thermal strength, electrical and thermal insulation. In particular, zirconia-based nanofibres possess this quality.…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of metal-dopant-based zirconia nanofibres via an electrospinning process for scientific applications

Thomas¹,

Judes²

2018

Mater. Tehnol.

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Nanofibres and their composites are some of the emerging materials used in versatile applications due to their better compatible performance. Zirconia nanofibres are examples of such materials. Though zirconia nanofibres have better performance, their conductivity is inferior and to boost their performance, doping with metals is required. Thus, the present study deals with the development of zirconia nanofibres doped with copper and iron in different concentrations and hybrid combinations using the electrospinning method with polyvinyl alcohol as a precursor. The developed materials are subjected to a thermal treatment to develop the properties. Both the thermally treated and untreated fibres were characterized using thermogravimetric analysis, Fourier-transform infrared spectroscopy, X-Ray diffraction, scanning electron microscopy coupled with energy-dispersive analysis, viscosity and conductivity measurements. It was concluded that doping thermally treated zirconia nanofibres with a hybrid combination of copper and iron was beneficial.

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Synthesis and characterization of boron doped alumina stabilized zirconia fibers

Cited by 9 publications

References 41 publications

Fabrication and characterization of boron doped yttria‐stabilized zirconia nanofibers

Fabrication and characterization of boron doped yttria‐stabilized zirconia nanofibers

Orthogonal design preparation of phenolic fiber by melt electrospinning

Development and characterization of metal-dopant-based zirconia nanofibres via an electrospinning process for scientific applications

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