Preparation of Sr β-alumina ionic conductors and their a.c. Impedance measurements

He Gang; Yasukazu Hayasaka; Takayuki Narushima; Takashi Goto; Toshio Hirai; Yasutaka Iguchi

Preparation of Sr β-alumina ionic conductors and their a.c. Impedance measurements

He Gang, Yasukazu Hayasaka, Takayuki Narushima, Takashi Goto, Toshio Hirai, Yasutaka Iguchi

ENG - Materials Processing

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

β-alumina type ionic conductors were synthesized in the SrO-MgO-Al₂O₃ system by a direct sintering method and their electrical conductivity was measured at 873 to 1373 K by an a.c. impedance method in order to apply the β-alumina to solid electrolyte of a gas sensor at high temperatures. Sr β-aluminas in a single phase were obtained in the composition range of SrO : MgO : Al₂O₃=1 : 1 : 4.8-5.2. The bulk and grain boundary conductivities were separated from the total conductivity at SrO : MgO : Al₂O₃=1 : 1 : 4.8 and 1 : 1 : 5.0. The bulk conductivity of the Sr β-alumina was around 6.7 × 10^-3 S·m^-1 at 1373 K.

Original language	English
Pages (from-to)	1067-1071
Number of pages	5
Journal	Journal of the Ceramic Society of Japan
Volume	105
Issue number	12
Publication status	Published - 1997 Dec

Keywords

Aluminate
Complex impedance
Electrical property
Ionic conductor
Strontium
β-alumina

Cite this

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title = "Preparation of Sr β-alumina ionic conductors and their a.c. Impedance measurements",

abstract = "β-alumina type ionic conductors were synthesized in the SrO-MgO-Al2O3 system by a direct sintering method and their electrical conductivity was measured at 873 to 1373 K by an a.c. impedance method in order to apply the β-alumina to solid electrolyte of a gas sensor at high temperatures. Sr β-aluminas in a single phase were obtained in the composition range of SrO : MgO : Al2O3=1 : 1 : 4.8-5.2. The bulk and grain boundary conductivities were separated from the total conductivity at SrO : MgO : Al2O3=1 : 1 : 4.8 and 1 : 1 : 5.0. The bulk conductivity of the Sr β-alumina was around 6.7 × 10-3 S·m-1 at 1373 K.",

keywords = "Aluminate, Complex impedance, Electrical property, Ionic conductor, Strontium, β-alumina",

author = "He Gang and Yasukazu Hayasaka and Takayuki Narushima and Takashi Goto and Toshio Hirai and Yasutaka Iguchi",

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T1 - Preparation of Sr β-alumina ionic conductors and their a.c. Impedance measurements

AU - Gang, He

AU - Hayasaka, Yasukazu

AU - Narushima, Takayuki

AU - Goto, Takashi

AU - Hirai, Toshio

AU - Iguchi, Yasutaka

PY - 1997/12

Y1 - 1997/12

N2 - β-alumina type ionic conductors were synthesized in the SrO-MgO-Al2O3 system by a direct sintering method and their electrical conductivity was measured at 873 to 1373 K by an a.c. impedance method in order to apply the β-alumina to solid electrolyte of a gas sensor at high temperatures. Sr β-aluminas in a single phase were obtained in the composition range of SrO : MgO : Al2O3=1 : 1 : 4.8-5.2. The bulk and grain boundary conductivities were separated from the total conductivity at SrO : MgO : Al2O3=1 : 1 : 4.8 and 1 : 1 : 5.0. The bulk conductivity of the Sr β-alumina was around 6.7 × 10-3 S·m-1 at 1373 K.

AB - β-alumina type ionic conductors were synthesized in the SrO-MgO-Al2O3 system by a direct sintering method and their electrical conductivity was measured at 873 to 1373 K by an a.c. impedance method in order to apply the β-alumina to solid electrolyte of a gas sensor at high temperatures. Sr β-aluminas in a single phase were obtained in the composition range of SrO : MgO : Al2O3=1 : 1 : 4.8-5.2. The bulk and grain boundary conductivities were separated from the total conductivity at SrO : MgO : Al2O3=1 : 1 : 4.8 and 1 : 1 : 5.0. The bulk conductivity of the Sr β-alumina was around 6.7 × 10-3 S·m-1 at 1373 K.

KW - Aluminate

KW - Complex impedance

KW - Electrical property

KW - Ionic conductor

KW - Strontium

KW - β-alumina

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SN - 1882-0743

VL - 105

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EP - 1071

JO - Journal of the Ceramic Society of Japan

JF - Journal of the Ceramic Society of Japan

IS - 12

ER -

Preparation of Sr β-alumina ionic conductors and their a.c. Impedance measurements

Abstract

Keywords

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