ZrO2 Phase Structure in Coating Films and Powders Obtained by Sol-Gel Process

被引:17
作者
Caruso, R. [1 ]
Pellegri, N. [1 ]
De Sanctis, O. [1 ]
Caracoche, M. C. [2 ]
Rivas, P. C. [2 ]
机构
[1] FCEIyA UNR, Lab Mat Ceram, RA-2000 Rosario, Argentina
[2] Univ Nacl La Plata, Dept Fis, RA-1900 La Plata, Buenos Aires, Argentina
关键词
zirconia; sol-gel process; coating; PAC technique; annealing;
D O I
10.1007/BF00486563
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Zirconia coating film and powder obtained by the sol-gel route using zirconium n-propoxide as starting material and acid catalyst were investigated by the Perturbed Angular Correlations method, X-Ray Diffraction and Differential Scanning Calorimetry and Differential Thermal Analyses. The hyperfine interaction, measured after annealing the samples at increasing temperatures up to 1100 degrees C, allowed to distinguish five different zirconium neighborhoods. Two of them describe rather disordered material which, on heating, crystallizes to the tetragonal phase and end finally in monoclinic zirconia. As compared with the powder, the film exhibits a minor fraction of an unidentified ordered form and a higher and more stable fraction of tetragonal phase. In addition, the tetragonal to monoclinic conversion takes place at higher temperatures and with a larger activation energy.
引用
收藏
页码:241 / 247
页数:7
相关论文
共 23 条
  • [1] STRUCTURAL STUDIES OF PHASE-TRANSFORMATIONS IN ULTRAFINE ZIRCONIA POWDERS
    BERNSTEIN, E
    BLANCHIN, MG
    RAVELLECHAPUIS, R
    RODRIGUEZCARVAJAL, J
    [J]. JOURNAL OF MATERIALS SCIENCE, 1992, 27 (23) : 6519 - 6524
  • [2] Bratton RJ, 1981, ADV CERAM, P226
  • [3] HYPERFINE INTERACTION OF ZRO2 - TETRAGONAL PHASE
    CARACOCHE, MC
    DOVA, MT
    GARCIA, ARL
    MARTINEZ, JA
    RIVAS, PC
    [J]. HYPERFINE INTERACTIONS, 1988, 39 (02): : 117 - 121
  • [4] EPITAXIAL YTTRIA-STABILIZED ZIRCONIA ON HYDROGEN-TERMINATED SI BY PULSED LASER DEPOSITION
    FORK, DK
    FENNER, DB
    CONNELL, GAN
    PHILLIPS, JM
    GEBALLE, TH
    [J]. APPLIED PHYSICS LETTERS, 1990, 57 (11) : 1137 - 1139
  • [5] EVALUATION OF CRYSTALLINE QUALITY OF HETEROEPITAXIAL YTTRIA-STABILIZED ZIRCONIA FILMS ON SILICON BY MEANS OF ION-BEAM CHANNELING
    FUKUMOTO, H
    IMURA, T
    OSAKA, Y
    NISHIYAMA, F
    [J]. JOURNAL OF APPLIED PHYSICS, 1989, 66 (02) : 616 - 618
  • [6] GIMBLETT G, 1980, J CHEM TECHNOL BIOT, V30, P51
  • [7] Jaeger H., 1986, J AM CERAM SOC, V69, P459
  • [8] MICROSTRUCTURE OF YTTRIA-STABILIZED ZIRCONIA OVERCOATS FOR THIN-FILM RECORDING MEDIA
    KAO, AS
    HWANG, C
    [J]. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1990, 8 (04): : 3289 - 3294
  • [9] Morrell E, 1988, ADV CERAM, V24B, P927
  • [10] Murkherjee S. E., 1984, ULTRASTRUCTURE PROCE, P179