TY - JOUR
T1 - Characterization of novel high-entropy (La0.2Nd0.2Sm0.2Dy0.2Yb0.2)2Zr2O7 electrospun ceramic nanofibers
AU - Li, Zeshuai
AU - Zhou, Feifei
AU - Xu, Baosheng
AU - Guo, Donghui
N1 - Publisher Copyright:
© 2022 Elsevier Ltd and Techna Group S.r.l.
PY - 2022/5/1
Y1 - 2022/5/1
N2 - We present a simple way to fabricate high-entropy (La0.2Nd0.2Sm0.2Dy0.2Yb0.2)2Zr2O7 (HE-RE2Zr2O7) ceramic nanofibers using the electrospinning and annealing processing in this work. The microstructure of nanofibers was characterized by thermal gravity-differential scanning calorimetry (TG-DSC), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), respectively. Meanwhile, the diameter and grain growth of HE-RE2Zr2O7 nanofibers under 1000 °C was analyzed. Results indicate that HE-RE2Zr2O7 nanofibers can be prepared at temperatures above 400 °C and the crystallite size can be controlled by annealing temperature. Both diameter and the grain growth of HE-RE2Zr2O7 nanofibers are lower than that of La2Zr2O7 nanofibers, attributed to the sluggish diffusion effect. The advantages of HE-RE2Zr2O7 nanofibers can further enlarge the application of nanofibers in the aspect of high-temperature thermal insulation materials.
AB - We present a simple way to fabricate high-entropy (La0.2Nd0.2Sm0.2Dy0.2Yb0.2)2Zr2O7 (HE-RE2Zr2O7) ceramic nanofibers using the electrospinning and annealing processing in this work. The microstructure of nanofibers was characterized by thermal gravity-differential scanning calorimetry (TG-DSC), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), respectively. Meanwhile, the diameter and grain growth of HE-RE2Zr2O7 nanofibers under 1000 °C was analyzed. Results indicate that HE-RE2Zr2O7 nanofibers can be prepared at temperatures above 400 °C and the crystallite size can be controlled by annealing temperature. Both diameter and the grain growth of HE-RE2Zr2O7 nanofibers are lower than that of La2Zr2O7 nanofibers, attributed to the sluggish diffusion effect. The advantages of HE-RE2Zr2O7 nanofibers can further enlarge the application of nanofibers in the aspect of high-temperature thermal insulation materials.
KW - Ceramic nanofiber
KW - Electrospinnig
KW - High-entropy ceramics
KW - Rare-earth zirconates
KW - Sluggish diffusion effect
UR - http://www.scopus.com/inward/record.url?scp=85122523882&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2022.01.067
DO - 10.1016/j.ceramint.2022.01.067
M3 - Article
AN - SCOPUS:85122523882
SN - 0272-8842
VL - 48
SP - 12074
EP - 12078
JO - Ceramics International
JF - Ceramics International
IS - 9
ER -