In-situ measurements by impedance spectroscopy of highly resistive α-alumina

被引：16

作者：

Öijerholm, J ^{[1
]}

Pan, J ^{[1
]}

Leygraf, C ^{[1
]}

机构：

[1] Royal Inst Technol, Dept Mat Sci & Engn, Div Corros Sci, SE-10044 Stockholm, Sweden

来源：

CORROSION SCIENCE | 2006年 / 48卷 / 01期

关键词：

aluminium oxide; impedance spectroscopy; ionic conductivity; high temperature corrosion;

D O I：

10.1016/j.corsci.2004.11.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In-situ impedance spectroscopy has been used for characterisation of oxides at elevated temperatures. However, for highly resistive oxides, the influence of electrode contact and leakage currents due to gas phase and surface conduction needs to be taken into account. In this study, IS measurements of pure and dense alpha-alumina (alpha-Al2O3) samples were performed in the temperature range 400-1000 degrees C with different types of electrode contact, in air and in nitrogen. The results show that above 700 degrees C the influence is negligible, whereas at lower temperatures the surface leakage current was substantial, and a so-called guard electrode recommendable. (C) 2005 Elsevier Ltd. All rights reserved.

引用

页码：243 / 257

页数：15

共 25 条

[1] STUDY OF SOLID ELECTROLYTE POLARIZATION BY A COMPLEX ADMITTANCE METHOD [J].

BAUERLE, JE .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1969, 30 (12) :2657-&

[2] ELECTROCHEMICAL CELLS AND ELECTRICAL CONDUCTION OF PURE AND DOPED AL2O3 [J].

BROOK, RJ ;

YEE, J ;

KROGER, FA .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1971, 54 (09) :444-+

[3]

Frederikse H.P.R., 1975, MATER SCI RES, P233, DOI [10.1007/978-1-4684-3150-6_16., DOI 10.1007/978-1-4684-3150-6_16]

[4] Platinum-induced oxidation of chromium in O2 at 800 °C [J].

Hultquist, G ;

Hörnlund, E ;

Dong, Q .

CORROSION SCIENCE, 2003, 45 (12) :2697-2703

[5] Experimental limitations in impedance spectroscopy .4. Electrode contact effects [J].

Hwang, JH ;

Kirkpatrick, KS ;

Mason, TO ;

Garboczi, EJ .

SOLID STATE IONICS, 1997, 98 (1-2) :93-104

[6] ELECTRICAL-CONDUCTION IN SINGLE-CRYSTAL AND POLYCRYSTALLINE AL2 O3 AT HIGH-TEMPERATURES [J].

KITAZAWA, K ;

COBLE, RL .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1974, 57 (06) :245-250

[7] DC AND AC ELECTRICAL-CONDUCTION IN SINGLE-CRYSTAL ALUMINA [J].

KIZILYALLI, HM ;

MASON, PR .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 1976, 36 (02) :499-508

[8] DEFECT RELATED PROPERTIES OF DOPED ALUMINA [J].

KROGER, FA .

SOLID STATE IONICS, 1984, 12 (MAR) :189-199

[9]

LEGALL M, 1994, PHILOS MAG A, V70, P761, DOI 10.1080/01418619408242929

[10]

Macdonald J. R., 1987, IMPEDANCE SPECTROSCO

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