Electrical, structural, and microstructural characterization of nanometric La0.9Sr0.1Ga0.8Mg0.2O3-δ (LSGM) prepared by high-pressure spark plasma sintering

被引：22

作者：

Maglia, F. ^{[1
,2
]}

Anselmi-Tamburini, U. ^{[1
,2
,3
]}

Chiodelli, G. ^{[2
]}

Camurlu, H. E. ^{[4
]}

Dapiaggi, M. ^{[5
]}

Munir, Z. A. ^{[3
]}

机构：

[1] Univ Pavia, Dept Phys Chem, I-27100 Pavia, Italy

[2] IENI CNR, Sez Pavia, I-27100 Pavia, Italy

[3] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA

[4] Akdeniz Univ, Dept Mech Engn, TR-07058 Antalya, Turkey

[5] Univ Milan, Dept Earth Sci, I-20133 Milan, Italy

来源：

SOLID STATE IONICS | 2009年 / 180卷 / 01期

基金：

美国国家科学基金会;

关键词：

LSGM; Sintering; Nanostructure; Spark plasma sintering (SPS); OXIDE-ION CONDUCTOR; MG-DOPED LAGAO3; PEROVSKITE-TYPE OXIDE; NANOSTRUCTURED MATERIALS; LANTHANUM GALLATE; IMPEDANCE SPECTROSCOPY; TRANSPORT-PROPERTIES; MAGNESIUM; STRONTIUM; DEFECT;

D O I：

10.1016/j.ssi.2008.10.005

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：

The synthesis of bulk nanometric La0.9Sr0.1Ga0.8Mg0.2O3 - delta (LSGM) was investigated using the high-pressure spark plasma sintering (HP-SPS) method. The starting precursor nanopowders were synthesized by the Pechini method. Single phase, fully dense LSGM was obtained with a sintering cycle of 5 min under a uniaxial pressure of 700 MPa at sintering temperatures as low as 850 degrees C. This sintering temperature is several hundred degrees lower than those typically reported for LSGM materials. A considerable reduction in the final grain size of the sintered materials was consequently observed. Fully dense samples with an average grain size as low as 65 nm could be prepared by this method. Despite the short. low temperature sintering process a single phase material was obtained. Due to the small size of the constituting grains it was possible to estimate the specific grain boundary conductivity by impedance measurements. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：36 / 40

页数：5

共 40 条

[1] Fast low-temperature consolidation of bulk nanometric ceramic materials [J].

Anselmi-Tamburini, U ;

Garay, JE ;

Munir, ZA .

SCRIPTA MATERIALIA, 2006, 54 (05) :823-828

[2] Spark plasma sintering and characterization of bulk nanostructured fully stabilized zirconia: Part I. Densification studies [J].

Anselmi-Tamburini, U ;

Garay, JE ;

Munir, ZA ;

Tacca, A ;

Maglia, F ;

Spinolo, G .

JOURNAL OF MATERIALS RESEARCH, 2004, 19 (11) :3255-3262

[3] Enhanced low-temperature protonic conductivity in fully dense nanometric cubic zirconia [J].

Anselmi-Tamburini, Umberto ;

Maglia, Filippo ;

Chiodelli, Gaetano ;

Riello, Pietro ;

Bucella, Stefania ;

Munir, Zuhair A. .

APPLIED PHYSICS LETTERS, 2006, 89 (16)

[4]

Anselmi-Tamburini U, 2006, ADV FUNCT MATER, V16, P2363, DOI [10.1002/adfm.200500415, 10.1002/adfm.200S00415]

[5] Nanostructured ceramics: a review of their potential [J].

Cain, M ;

Morrell, R .

APPLIED ORGANOMETALLIC CHEMISTRY, 2001, 15 (05) :321-330

[6] GRAIN-GROWTH TRANSITION DURING SINTERING OF COLLOIDALLY PREPARED ALUMINA POWDER COMPACTS [J].

CAMERON, CP ;

RAJ, R .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1988, 71 (12) :1031-1035

[7] Defect and transport properties of nanocrystalline CeO2-x [J].

Chiang, YM ;

Lavik, EB ;

Kosacki, I ;

Tuller, HL ;

Ying, JY .

APPLIED PHYSICS LETTERS, 1996, 69 (02) :185-187

[8] EXPERIMENTAL APPROACH TO THE IMPEDANCE SPECTROSCOPY TECHNIQUE [J].

CHIODELLI, G ;

LUPOTTO, P .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1991, 138 (09) :2703-2711

[9] Characterisation, conductivity and mechanical properties of the oxygen-ion conductor La0.9Sr0.1Ga0.8Mg0.2O3-x [J].

Drennan, J ;

Zelizko, V ;

Hay, D ;

Ciacchi, FT ;

Rajendran, S ;

Badwal, SPS .

JOURNAL OF MATERIALS CHEMISTRY, 1997, 7 (01) :79-83

[10]

FENG M, 1994, EUR J SOL STATE INOR, V31, P663

← 1 2 3 4 →