Journal of Jilin University(Engineering and Technology Edition) ›› 2024, Vol. 54 ›› Issue (2): 394-399.doi: 10.13229/j.cnki.jdxbgxb.20220338

Previous Articles    

Flash sintering of 3YSZ doping with CNT at low temperature

Yue YANG(),Pei-lei ZHAO,Tian-hui MA,Jian-ming JIA   

  1. School of Materials Science and Engineering，Changchun University of Technology，Changchun 130012，China
  • Received:2022-03-29 Online:2024-02-01 Published:2024-03-29

RICH HTML

 3   

PDF (PC)

28

Abstract:

In the present study， 3 mol% Yttria-Stabilized Zirconia （3YSZ） powder was used as the base material doping with conductive phase-carbon nanotubes （CNT） to conduct low-temperature sintering at 200 ℃， and simultaneously assisting AC electric field and pressure. The effects of carbon nanotube concentration on the phase composition， microscopic morphology and ionic conductivity of sintered materials were mainly discussed. The results showed that the composites were sintered uniformly and densely at this temperature， and the ionic conductivity was 0.20 μs/cm when the concentration of carbon nanotubes was 2%；When the concentration of carbon nanotubes was 3%， the ionic conductivity 0.83 μs/cm could be reached；When the concentration of carbon nanotubes was increased to 4%， the ability of the material to withstand electric field strength and current density was further improved， and the initial voltage of flash sintering was reduced， but the conductivity was 0.6 μs/cm at this time， meantime， the material could be sintered at room temperature.

Key words: materials science, flash sinter, carbon nanotubes, sintering temperature, ionic conductivity

CLC Number: 

  • TB34

Fig.1

Schematic diagram of flash sintering furnace"

Fig.2

Schematic diagram of the FS process of 3YSZ doping with CNT"

Fig.3

Power variations and corresponding blackbody radiation temperature curves of flash sintered samples with different CNT concentrations"

Fig.4

XRD patterns of 3YSZ-2%CNT， 3YSZ-3%CNT， 3YSZ-4%CNT samples after flash sintering"

Fig.5

Fracture surface Micromorphology of the samples sintered with different concentrations"

Fig.6

Impedance spectra of samples prepared with different concentrations of CNT"

Table 1

Ionic conductivity and activation energy of 3YSZ prepared with different concentrations of CNT"

项目FS-2%-150FS-3%-150FS-3%-300FS-4%-300FS-4%-室温
Conductivity/（μs·cm-1）0.110.200.830.600.24
ΔEσ/eV1.191.281.071.171.18

Fig.7

Arrhenius curves of the corresponding electrical conductivity of samples prepared with different concentrations of CNT"

1 Guan S H, Liu Z P. Theoretical aspects on doped-zirconia for solid oxide fuel cells: from structure to conductivity[J]. Chinese Journal of Chemical Physics, 2021, 34 (2): 125-136.
2 Lv Y M, Xie J T, Wang D B, et al. Review of cell performance in solid oxide fuel cells[J]. Journal of Materials Science, 2021, 55(17): 7184-7207.
3 杨悦, 李雪, 徐晓丹. Ti-B-C-N粉末烧结的微观组织及其性能[J].吉林大学学报:工学版, 2017, 47(2): 552-556.
Yang Yue, Li Xue, Xu Xiao-dan. Microstructure and properties of sintered Ti-B-C-N powder[J]. Journal of Jilin University(Engineering and Technology Edition), 2017, 47(2): 552-556.
4 Cologna M, Rashkova B, Raj R. Flash sintering of nanograin zirconia in <5 s at 850 ℃[J]. Journal of the American Ceramic Society, 2010, 93 (11): 3556-3559.
5 苏兴华, 吴亚娟, 安盖, 等. 陶瓷材料闪烧机理研究进展[J]. 硅酸盐学报, 2020, 48 (12): 1872-1879.
Su Xing-hua, Wu Ya-juan, An Gai, et al. Advances in mechanisms for flash sintering of ceramic materials[J]. Journal of The Chinese Ceramic Society, 2020, 48(12): 1872-1879.
6 Liu J M, Li X, Wang X L, et al. Alternating current field flash sintering 99% relative density ZnO ceramics at room temperature[J]. Scripta Materialia, 2020, 176: 28-31.
7 Xiao W W, Ni N, Fan X H, et al. Ambient flash sintering of reduced graphene oxide/zirconia composites: role of reduced graphene oxide[J]. Journal of Materials Science & Technology, 2021, 60: 70-76.
8 Muccillo R, Ferlauto A S, Muccillo E N S. Flash sintering samaria-doped ceria–carbon nanotube composites[J]. Ceramics, 2019, 2(1): 64-73.
9 Du Y, Stevenson A J, Vernat D, et al. Estimating joule heating and ionic conductivity during flash sintering of 8YSZ[J]. Journal of the European Ceramic Society, 2016, 36(3): 749-759.
10 刘金铃,刘佃光, 王一光, 等. 氧化物陶瓷闪烧机理及其应用研究进展[J]. 无机材料学报, 2022, 37(5): 473-480.
Liu Jin-ling, Liu Dian-guang, Wang Yi-guang, et al. Research progress on the flash sintering mechanism and application of oxide ceramics[J]. Journal of Inorganic Materials, 2022, 37(5): 1-8.
11 杨悦, 马天惠, 赵培雷, 等. 快速热压烧结制备立方相Li7La3Zr2O12固态电解质[J]. 吉林大学学报: 工学版, 2023, 53(8): 2272-2276.
Yang Yue, Ma Tian-hui, Zhao Pei-lei,et al. Preparation of cubic Li7La3Zr2O12 solid electrolyte by fast hot-press sintering[J]. Journal of Jilin University (Engineering and Technology Edition),2023,53(8): 2272-2276.
[1] Yue YANG,Tian-hui MA,Pei-lei ZHAO,Jian-ming JIA. Preparation of cubic Li7La3Zr2O12 solid electrolyte by fast hot⁃press sintering [J]. Journal of Jilin University(Engineering and Technology Edition), 2023, 53(8): 2272-2276.
[2] Mi WANG,Zhi-yuan LI,Wen-xuan FAN,Jia-yi LI,Zhen-ning LIU,Guo-long LU. Influence factors upon friction coefficient of bioinspired materials with integrated soft and hard layers [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(5): 1630-1635.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © Journal of Jilin University(Engineering and Technology Edition), All Rights Reserved.
Tel: +86-431-85095297　Fax: +86-431-85094074　E-mail: xbgxb@jlu.edu.cn
Powered by Beijing Magtech Co. Ltd