Na2CO3 doping effect on ZnO-Pr6O11-Co3O4 ceramic varistor properties

被引：24

作者：

Mei, Li-Then ^{[1
]}

Hsiang, Hsing-I ^{[1
,2
]}

Hsi, Chi-Shiung ^{[3
]}

Yen, Fu-Su ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Resources Engn, Particulate Mat Res Ctr, Tainan 70101, Taiwan

[2] Natl Cheng Kung Univ, Ctr Micro Nano Sci & Technol, Tainan 70101, Taiwan

[3] Natl United Univ, Dept Mat Sci & Engn, Miaoli, Taiwan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 558卷

关键词：

Varistor; Zinc oxide; Chemisorptions; PRASEODYMIUM OXIDE; ZNO; OXYGEN;

D O I：

10.1016/j.jallcom.2013.01.047

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Suitable Na2CO3 doping can enhance the varistor properties of ZnO-Pr6O11-Co3O4 ceramics. X-ray diffractometer (XRD), thermo-gravimetry analysis (TGA), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were used to investigate the Na+ ion addition effects on the crystal phases, microstructure development and varistor properties of ZnO-Pr6O11-Co3O4 ceramics. The results imply that sodium ions will dissolve into praseodymium oxide and promote oxygen vacancy formation in praseodymium oxide. This phenomenon will enhance the oxygen diffusion and formation of zinc vacancies at the grain boundary. The varistor characteristics of ZnO-Pr6O11-Co3O4 ceramics can therefore be improved by adding Na2CO3. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：84 / 90

页数：7

共 28 条

[1] THE EFFECT OF LIQUID-PHASE SINTERING ON THE PROPERTIES OF PR6O11-BASED ZNO VARISTORS [J].

ALLES, AB ;

BURDICK, VL .

JOURNAL OF APPLIED PHYSICS, 1991, 70 (11) :6883-6890

[2] SnO2, ZnO and related polycrystalline compound semiconductors:: An overview and review on the voltage-dependent resistance (non-ohmic) feature [J].

Bueno, Paulo R. ;

Varela, Jose A. ;

Longo, Elson .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2008, 28 (03) :505-529

[3] PHASE TRANSFORMATIONS IN PRASEODYMIUM OXIDE-OXYGEN SYSTEM - HIGH-TEMPERATURE X-RAY DIFFRACTION STUDIES [J].

BURNHAM, DA ;

EYRING, L .

JOURNAL OF PHYSICAL CHEMISTRY, 1968, 72 (13) :4415-&

[4] COOLING RATE EFFECTS IN ZNO VARISTORS [J].

CASTRO, MS ;

PERISSINOTTI, L ;

ALDAO, CM .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 1992, 3 (04) :218-221

[5]

Chun SY, 1997, J AM CERAM SOC, V80, P995, DOI 10.1111/j.1151-2916.1997.tb02932.x

[6]

Clarke DR, 1999, J AM CERAM SOC, V82, P485

[7]

Gupta T. K., 1998, J MATER RES, V3, P745

[8] APPLICATION OF ZINC-OXIDE VARISTORS [J].

GUPTA, TK .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (07) :1817-1840

[9] PRASEODYMIUM OXIDES .2. X-RAY AND DIFFERENTIAL THERMAL ANALYSES [J].

GUTH, ED ;

HOLDEN, JR ;

BAENZIGER, NC ;

EYRING, L .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1954, 76 (20) :5239-5242

[10] Thermoelectric properties of porous zinc oxide ceramics doped with praseodymium [J].

Inoue, Yoshihiro ;

Okamoto, Yoichi ;

Morimoto, Jun .

JOURNAL OF MATERIALS SCIENCE, 2008, 43 (01) :368-377

← 1 2 3 →