Effects of the sintering temperature on the oxygen adsorption in ZnO ceramics

被引：19

作者：

Castro, MS ^{[1
]}

Aldao, CM ^{[1
]}

机构：

[1] Univ Mar del Plata, Inst Mat Sci & Technol, CONICET, INTEMA, RA-7600 Mar Del Plata, Argentina

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1999年 / 19卷 / 04期

关键词：

sintering; grain boundaries; electrical conductivity; ZnO; sensors;

D O I：

10.1016/S0955-2219(98)00210-6

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：

Changes in electrical resistivity due to oxygen adsorption for samples prepared at different sintering temperature are presented. It was found that samples cooled in steps from the sintering temperature show a higher resistivity and that oxygen indiffusion is faster in quenched samples and in samples sintered at low temperatures. Two mechanisms were determined to be responsible for an increase in the sample resistivity. First, oxygen adsorption at grains surfaces produces a rapid increase in resistivity and then a slow change in the response due to oxygen diffusion into the grains. (C) 1999 Elsevier Science Limited. All rights reserved.

引用

页码：511 / 515

页数：5

共 11 条

[1] THE INVESTIGATION OF THE PRESSURE AND TEMPERATURE-DEPENDENCE OF THE ELECTRICAL-CONDUCTIVITY OF THIN ZINC-OXIDE FILMS WITH HIGH RESISTANCES [J].

BONASEWICZ, P ;

HIRSCHWALD, W ;

NEUMANN, G .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 1986, 97 (02) :593-599

[2] PREBREAKDOWN CONDUCTION IN ZINC-OXIDE VARISTORS - THERMIONIC OR TUNNEL CURRENTS AND ONE-STEP OR 2-STEP CONDUCTION PROCESSES [J].

CASTRO, MS ;

ALDAO, CM .

APPLIED PHYSICS LETTERS, 1993, 63 (08) :1077-1079

[3] CHARACTERIZATION OF DEFECTS ON ZNO AND RU-ZNO - A STRUCTURAL, TPD, AND SPECTROSCOPIC STUDY [J].

CATTANIA, MG ;

DANTONA, P ;

MORAZZONI, F ;

SCOTTI, R .

VACUUM, 1990, 41 (7-9) :1633-1635

[4] FORMATION OF ENERGY BARRIER BY ADSORBED OXYGEN ON ZNO [J].

FUJITSU, S ;

KOUMOTO, K ;

YANAGIDA, H .

SOLID STATE IONICS, 1989, 32-3 :482-487

[5]

FUJITSU S, 1987, J AM CERAM SOC, V70, pC71, DOI 10.1111/j.1151-2916.1987.tb04988.x

[6] CARBON-MONOXIDE OXIDATION-KINETICS ON ZINC-OXIDE [J].

KOBAYASHI, M ;

KANNO, T ;

KIMURA, T .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1988, 84 :2099-2108

[7]

MADOU MJ, 1989, CHEM SENSING SOLID S, pCH2

[8] ELECTRON-PARAMAGNETIC RESONANCE INVESTIGATION OF PARAMAGNETIC POINT-DEFECTS IN ZNO AND ZNO-SUPPORTED RUTHENIUM [J].

MORAZZONI, F ;

SCOTTI, R ;

VOLONTE, S .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1990, 86 (09) :1587-1591

[9]

Morrison S. R., 1994, SEMICONDUCTOR SENSOR, P383

[10]

Sukkar M., 1983, ADV CERAM, V7, P71

← 1 2 →