Preparation of YAG-ZrO2 composite nanofibers by electrospinning

Abstract

Abstract: YAG-ZrO₂ composite nano-fibers with smooth morphology and uniform size were successfully prepared by electrospinning and heat treatment. Effects of voltage and concentration on the phase and morphology of composite fibers were studied by XRD, FT-IR and SEM in this research. Obtained results show that the composite fiber has a smooth surface and uniform size if voltage of 25 kV and the PVA content of 11% applied. After annealing at 1 200 ℃ for 5 h, the precursor fiber has a higher crystallinity and a uniform diameter of about 500 nm. In order to make the YAG-ZrO₂ fiber reinforced composites, which possesses the function of self-testing, the luminescence properties of YAG-ZrO₂ fibers were also investigated. It was found that sharp emission peaks at 581 nm were detected when YAG-ZrO₂:Tb³⁺ composite nanofibers were excited by 290 nm UV light, emitting green light as well. This phenomenon belongs to the ⁴D₄→⁷F₄ transition of Tb³⁺. Stress-luminescence experiment results show that YAG-ZrO₂:Tb³⁺ fiber could detect the stress and strain of aluminum matrix composites.

Key words: electrospinning technology, YAG-ZrO₂ nanofibers, luminescence properties

CLC Number:

TB34

HE Ling, QIN Xing-wen, FENG Yu-jie, PAN Li-li, SUN Wei-min, LI Wen-sheng. Preparation of YAG-ZrO₂ composite nanofibers by electrospinning[J]. Journal of Lanzhou University of Technology, 2020, 46(3): 28-33.

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Preparation of YAG-ZrO₂ composite nanofibers by electrospinning

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