Synthesis and characterization of MgAl2O4 spinel precursor from a heterogeneous alkoxide solution containing fine MgO powder

被引：88

作者：

Shiono, T ^{[1
]}

Shiono, K ^{[1
]}

Miyamoto, K ^{[1
]}

Pezzotti, G ^{[1
]}

机构：

[1] Kyoto Inst Technol, Dept Chem & Mat Technol, Kyoto 6068585, Japan

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2000年 / 83卷 / 01期

关键词：

Alkoxide solution - Boehmite - Hydroxide - Magnesium aluminate;

D O I：

10.1111/j.1151-2916.2000.tb01180.x

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：

A precursor was synthesized from a heterogeneous alkoxide solution that contained fine MgO powder, which allowed the preparation of MgAl2O4 spinel powder with high sinterability characteristics. The precursor consisted of a mixture of boehmite (AlO(OH)) and a mixed hydroxide (Mg4Al2(OH)(14). 3H(2)O). The spinel phase formed through two steps: (i) decomposition of the mixed hydroxide at low temperature and (ii) solid-state reaction between MgO and gamma-Al2O3 at higher temperatures. Dense polycrystalline spinel could be obtained from the calcined powders at sintering temperatures as low as 1400 degrees C.

引用

页码：235 / 237

页数：3

共 10 条

[1]

BAKKER WT, 1967, AM CERAM SOC BULL, V46, P1094

[2]

BRATTON RJ, 1969, AM CERAM SOC BULL, V48, P759

[3]

HOKAZONO S, 1992, BRIT CERAM TRANS J, V91, P77

[4]

KANZAKI S, 1983, YOGYO-KYOKAI-SHI, V91, P164

[5]

Nakagawa Z., 1982, Yogyo-Kyokai-Shi, V90, P312, DOI 10.2109/jcersj1950.90.1042_312

[6]

SHIONO T, 1991, CERAMIC T, V22, P69

[7]

SHIONO T, 1994, J JPN SOC POWDER POW, V41, P573

[8]

Sugiura M., 1984, Yogyo-Kyokai-Shi, V92, P605, DOI 10.2109/jcersj1950.92.1071_605

[9] PREPARATION OF MGAL2O4 SPINEL POWDERS VIA FREEZE-DRYING OF ALKOXIDE PRECURSORS [J].

WANG, CT ;

LIN, LS ;

YANG, SJ .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1992, 75 (08) :2240-2243

[10]

YAMAGUCHI O, 1975, J JPN SOC POWDER POW, V22, P202

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