Thermal Evolution and Stability of Pr2O3-doped ZrO2 Powder and Thin Films

被引：0
作者：
Barolin, S. [1 ]
Martinez Fernandez, J.
de Sanctis, O. A. [1 ]
机构：
[1] IFIR CONICET UNR, Lab Mat Ceram, Av Pellegrini 250, RA-2000 Rosario, Santa Fe, Argentina
来源：
11TH INTERNATIONAL CONGRESS ON METALLURGY & MATERIALS SAM/CONAMET 2011 | 2012年 / 1卷
关键词：
zirconia; Praseodymiun; thermal evolution; thin films;
D O I：
10.1016/j.mspro.2012.06.086
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
ZrO2 powders and films with 5, 8, 9 and 10 mol % of Pr2O3 were prepared by a modified sol-gel method using liquid precursors. The thermal stability of the different phases is crucial in order to use this material in devices such as fuel cells, where the appearance of unwanted spurious phases causes a negative impact in the efficiency of such devices. DTA-TG and HT-XRD analysis carried out on the powders show that crystallization takes place around 500 degrees C. Heat treatments over 1000 degrees C produces destabilization of the initial crystallization cubic phase in the powders as well as in the films. However, aging treatments consisting in thermal cycles between room temperature and 750 degrees C, which is the temperature of technological interest, do not affect the structure, the microstructure and the stresses state of the Pr-doped ZO(2) thin films. (C) 2012 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of SAM/CONAMET 2011, Rosario, Argentina.
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页码：636 / 643
页数：8
相关论文
共 9 条
  • [1] Bergeron C., 1984, INTRODUCTION TO PHAS
  • [2] Phase structure and thermal evolution in coating films and powders obtained by sol-gel process .2. ZrO2-2.5 mole % Y2O3
    Caruso, R
    Benavidez, E
    deSanctis, O
    Caracoche, MC
    Rivas, PC
    Cervera, M
    Caneiro, A
    Serquis, A
    [J]. JOURNAL OF MATERIALS RESEARCH, 1997, 12 (10) : 2594 - 2601
  • [3] Role of praseodymium on zirconia phases stabilization
    Corradi, AB
    Bondioli, F
    Ferrari, AM
    [J]. CHEMISTRY OF MATERIALS, 2001, 13 (12) : 4550 - 4554
  • [4] Structural, magnetic and luminescent characteristics of Pr3+-doped ZrO2 powders synthesized by a sol-gel method
    Isasi-Marin, J.
    Perez-Estebanez, M.
    Diaz-Guerra, C.
    Castillo, J. F.
    Correcher, V.
    Cuervo-Rodriguez, M. R.
    [J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2009, 42 (07)
  • [5] Specific twin junctions in doped zirconia
    Morales, F. M.
    Ruhle, M.
    [J]. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 2006, 62 (05) : 761 - 767
  • [6] Single-phase PrOy-ZrO2 materials and their oxygen storage capacity:: A comparison with single-phase CeO2-ZrO2, PrOy-CeO2, and PrOy-CeO2-ZrO2 materials
    Narula, CK
    Haack, LP
    Chun, W
    Jen, HW
    Graham, GW
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (18): : 3634 - 3639
  • [7] Sol-gel processed fluorite-structured PrOy-ZrO2 mixed oxides deposited on alumina
    Narula, CK
    Allard, LF
    Graham, GW
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 1999, 9 (05) : 1155 - 1159
  • [8] Photoluminescent spectroscopy measurements in nanocrystalline praseodymium doped zirconia powders
    Ramos-Brito, F.
    Murrieta S, H.
    Hernández A, J.
    Camarillo, E.
    García-Hipólito, M.
    Martínez-Martínez, R.
    Alvarez-Fragoso, O.
    Falcony, C.
    [J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2006, 39 (10) : 2079 - 2083
  • [9] Wenk H.-R., 1999, ICOTOM 12
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