The influence of annealing on grain growth in nanocrystalline CeO2 ceramics

被引:0
|
作者
Czerwinski, F
Szpunar, JA
机构
来源
GRAIN GROWTH IN POLYCRYSTALLINE MATERIALS II, PTS 1 AND 2 | 1996年 / 204-卷
关键词
CeO2; sol-gel technology; nanocrystalline solids;
D O I
10.4028/www.scientific.net/MSF.204-206.503
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Sol-gel technology was utilized to produce the nanocrystalline CeO2 ceramics in the form of bulk materials and coatings with thicknesses of up to 200 nm. After deposition, the CeO2 ceramics were composed of randomly oriented crystallites with a size of 5 nm. The grain size evolution during annealing depended on the coating thickness and the substrate nature. On non-oxidizing substrates the conversion of gel to ceramics was accompanied by the removal of water and organic species and followed by grain growth without formation of any evident texture. On substrates forming protective NiO and Cr2O3 films, the annealing resulted in the incorporation of CeO2 into the native oxides. When the CeO2 particles with a size smaller than 10 nm were incorporated, they started to dissolve at high temperatures and to saturate the network of grain boundaries of oxides with Ce ions. In contrast, the large particles did not change their size and remained inert inside the native oxides.
引用
收藏
页码:503 / 508
页数:6
相关论文
共 50 条
  • [1] Sintering of nanocrystalline CeO2 ceramics
    Kleinlogel, C
    Gauckler, LJ
    ADVANCED MATERIALS, 2001, 13 (14) : 1081 - +
  • [2] Kinetic of grain growth of CeO2 nanocrystalline prepared by precipitation method
    Song, XL
    Qiu, GZ
    Qu, P
    Yang, ZH
    RARE METAL MATERIALS AND ENGINEERING, 2005, 34 (07) : 1085 - 1088
  • [3] Sintering and grain growth of CoO-doped CeO2 ceramics
    Zhang, TS
    Hing, P
    Huang, HT
    Kilner, J
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2002, 22 (01) : 27 - 34
  • [4] Effects of Grain Boundary Decoration on the Electrical Conduction of Nanocrystalline CeO2
    Lupetin, Piero
    Giannici, Francesco
    Gregori, Giuliano
    Martorana, Antonino
    Maier, Joachim
    JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2012, 159 (04) : B417 - B425
  • [5] Dual effects of co-electrodeposition of CeO2 nanoparticles on the grain growth of nanocrystalline Ni matrix
    Liangfu Zheng
    Zhen Yang
    Huijuan Zhen
    Xiao Peng
    Journal of Materials Research, 2017, 32 : 1741 - 1747
  • [6] Dual effects of co-electrodeposition of CeO2 nanoparticles on the grain growth of nanocrystalline Ni matrix
    Zheng, Liangfu
    Yang, Zhen
    Zhen, Huijuan
    Peng, Xiao
    JOURNAL OF MATERIALS RESEARCH, 2017, 32 (09) : 1741 - 1747
  • [7] Influence of pH on Morphology and Formation Mechanism of CeO2 Nanocrystalline
    梅燕
    王为
    聂祚仁
    JournalofRareEarths, 2007, (01) : 53 - 57
  • [8] Influence of pH on morphology and formation mechanism of CeO2 nanocrystalline
    Mei Yan
    Wang Wei
    Nie Zuoren
    JOURNAL OF RARE EARTHS, 2007, 25 (01) : 53 - 57
  • [9] Mechanochemical synthesis of nanocrystalline CeO2:: The effect of annealing temperatures on the particle size
    Hadi, Abdul
    Yaacob, Iskandar Idris
    Ling, Lee Seok
    FUNCTIONAL MATERIALS AND DEVICES, 2006, 517 : 252 - 256
  • [10] Effect of annealing temperature on oxygen vacancy concentrations of nanocrystalline CeO2 film
    Wang, Ka
    Chang, Yongqin
    Lv, Liang
    Long, Yi
    APPLIED SURFACE SCIENCE, 2015, 351 : 164 - 168