Formation and sintering of LaCrO3 prepared by the hydrazine method

被引：40

作者：

Azegami, K ^{[1
]}

Yoshinaka, M ^{[1
]}

Hirota, K ^{[1
]}

Yamaguchi, O ^{[1
]}

机构：

[1] Doshisha Univ, Fac Engn, Dept Mol Sci & Technol, Kyoto 61003, Japan

来源：

MATERIALS RESEARCH BULLETIN | 1998年 / 33卷 / 02期

关键词：

oxides; chemical synthesis; electron microscopy; X-ray diffraction; electrical properties;

D O I：

10.1016/S0025-5408(97)00233-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Sinterable LaCrO3 powder consisting of submicron particles (approximate to 0.2 mu m) has been obtained at low temperatures (approximate to 850 degrees C) by decomposition of LaCrO4, which crystallizes at 495 degrees C, from an amorphous material prepared by the hydrazine method. Powder characterization is examined. Dense LaCrO3 ceramics (93.9% of theoretical) with small grains (approximate to 2.1 mu m) can be fabricated by sintering for 2 h at 1600 degrees C without any control of oxygen pressure. They show a high electrical conductivity of 108 S.m(-1) at 1000 degrees C. (C) 1998 Elsevier Science Ltd.

引用

页码：341 / 348

页数：8

共 21 条

[1]

BANSAL KP, 1981, BRIT CERAM TRANS J, V80, P215

[2]

GELLER S, 1982, ACTA CRYSTALLOGR, V15, P102

[3]

INAGAKI M, 1990, NIPPON SERAM KYO GAK, V98, P675, DOI 10.2109/jcersj.98.675

[4] FORMATION OF ZIRCONIA SOLID-SOLUTIONS CONTAINING ALUMINA PREPARED BY NEW PREPARATION METHOD [J].

ISHIDA, K ;

HIROTA, K ;

YAMAGUCHI, O ;

KUME, H ;

INAMURA, S ;

MIYAMOTO, H .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1994, 77 (05) :1391-1395

[5]

*JOINT COMM POWD D, 33701 JOINT COMM POW

[6]

*JOINT COMM POWD D, 3693 JOINT COMM POWD

[7] LOCALIZED LEVEL HOPPING TRANSPORT IN LA(SR)CRO3 [J].

KARIM, DP ;

ALDRED, AT .

PHYSICAL REVIEW B, 1979, 20 (06) :2255-2263

[8] STRUCTURAL STUDIES OF (LA,SR)CRO3 SYSTEM [J].

KHATTAK, CP ;

COX, DE .

MATERIALS RESEARCH BULLETIN, 1977, 12 (05) :463-471

[9]

KLEINSCHMAGER H, 1972, Z NATURFORSCH PT A, VA 27, P363

[10]

KOSE S, 1991, KAGAKU KOGYO, V74, P72

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