Sensitivity of SnO2 non-ohmic behavior to the sintering process and to the addition of La2O3

被引：28
|
作者：
Oliveira, MM
Bueno, PR
Cassia-Santos, MR
Longo, E
Varela, JA
机构：
[1] Univ Fed Sao Carlos, Dept Quim, CMDMC, LIEC, BR-13560 Sao Carlos, SP, Brazil
[2] UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2001年 / 21卷 / 09期
基金：
巴西圣保罗研究基金会;
关键词：
electrical properties; La2O3; sintering; SnO2; varistors;
D O I：
10.1016/S0955-2219(00)00329-0
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：
The work reported here consisted of a study of the sensitivity of the nonlinear electrical properties of dense SnO2. CoO ceramic systems to low concentrations of La2O3, sintering temperature and cooling rates. The nonlinear electrical properties of these systems were found to increase with decreasing cooling rates, a behavior attributed to the CoO solid state reactions at temperatures below 1000 degreesC. Post-annealing treatment in N-2-rich atmospheres strongly decreases the non-ohmic behavior of SnO2. CoO ceramic systems. However, this behavior may be restored through thermal treatment in an O-2-rich atmosphere. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1179 / 1185
页数：7
相关论文
共 50 条
  • [31] Hot pressing sintering process and sintering mechanism of W–La2O3–Y2O3–ZrO2
    Bao-Gang Fu
    Jian-Can Yang
    Zhi-Kun Gao
    Zuo-Ren Nie
    Rare Metals, 2021, 40 : 1949 - 1956
  • [32] Effect of micro/nano La2O3 addition on the sintering and properties of mullite synthesized
    Gao, Xiong
    Zhang, Deng
    Feng, Xueru
    Zhang, Jiamin
    Peng, Yuqing
    Pan, Zhicheng
    Dai, Zongming
    INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, 2024, 21 (01) : 51 - 61
  • [33] Grain refinement and non-ohmic properties in (Co, Ta)-doped SnO2 ceramics by Cr2O3 additions and the in situ formation of CoCr2O4
    A. E. Montes Mejía
    M. I. Pech-Canul
    M. B. Hernández
    S. García-Villarreal
    C. Gómez Rodríguez
    J. A. Aguilar-Martínez
    Applied Physics A, 2018, 124
  • [34] Grain refinement and non-ohmic properties in (Co, Ta)-doped SnO2 ceramics by Cr2O3 additions and the in situ formation of CoCr2O4
    Montes Mejia, A. E.
    Pech-Canul, M. I.
    Hernandez, M. B.
    Garcia-Villarreal, S.
    Gomez Rodriguez, C.
    Aguilar-Martinez, J. A.
    APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2018, 124 (07):
  • [35] Improvement in the non-linear electrical characteristics of the SnO2•CoO•Ta2O5 varistor material with La2O3 additive
    Wang, CM
    Wang, JF
    Chen, HC
    Su, WB
    Zang, GZ
    Qi, P
    MATERIALS CHEMISTRY AND PHYSICS, 2005, 92 (01) : 118 - 122
  • [36] ZnO/La2O3/SnO2纳米新材料的气敏特性研究
    林舒凡
    于海
    企业科技与发展, 2022, (11) : 59 - 61+65
  • [37] SINTERING OF LIME DOPED WITH LA2O3 AND CEO2
    GHONEIM, NM
    MANDOUR, MA
    SERRY, MA
    CERAMICS INTERNATIONAL, 1989, 15 (06) : 357 - 362
  • [38] Effect of La2O3 addition on sintering behavior of MgAl2O4-CaAl4O7-CaAl12O19 composite
    Yin X.
    Chen M.
    Wang N.
    Du C.
    Xu L.
    Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica, 2018, 35 (02): : 403 - 409
  • [39] 2 KINDS OF CURRENT SATURATION ON NON-OHMIC BEHAVIOR IN CDS
    UCHIDA, I
    ISHIGURO, T
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1967, 23 (06) : 1257 - &
  • [40] Non-ohmic properties and impulse aging behavior of quaternary ZnO-V2O5-Mn3O4-Er2O3 semiconducting varistors with sintering processing
    Nahm, Choon-Woo
    MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2013, 16 (05) : 1308 - 1315
12345