PREPARATION AND GRAIN-BOUNDARY DEVITRIFICATION OF SAMARIUM ALPHA-SIALON CERAMICS

被引：61

作者：

CHENG, YB ^{[1
]}

THOMPSON, DP ^{[1
]}

机构：

[1] UNIV NEWCASTLE UPON TYNE,DEPT MECH MAT & MFG ENGN,NEWCASTLE TYNE NE1 7RU,TYNE & WEAR,ENGLAND

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1994年 / 14卷 / 01期

关键词：

D O I：

10.1016/0955-2219(94)90039-6

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：

The reaction sequence and densification behaviour of Sm alpha-sialon ceramics have been studied. Sm2O3 is an effective sintering aid and dense Sm alpha-sialon ceramics can be prepared by pressureless sintering at 1800-degrees-C for 4 h. Post-sintering heat-treatment produces two different grain boundary phases depending on the heat-treatment temperature. Below 1400-degrees-C SmAlO3 is stable, and between 1400 and 1600-degrees-C an Al-containing melilite solid solution (M(SS)') appears at the grain boundaries. Microstructures of the materials before and after heat-treatment have been studied and the results are discussed.

引用

页码：13 / 21

页数：9

共 11 条

[1] ALUMINUM-CONTAINING NITROGEN MELILITE PHASES [J].

CHENG, YB ;

THOMPSON, DP .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1994, 77 (01) :143-148

[2]

CHENG YB, IN PRESS PRESSURELES

[3]

CHENG YF, 1990, UNPUB

[4] SIAION CERAMICS [J].

EKSTROM, T ;

NYGREN, M .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1992, 75 (02) :259-276

[5] EFFECT OF COMPOSITION, PHASE CONTENT AND MICROSTRUCTURE ON THE PERFORMANCE OF YTTRIUM SI-AL-O-N CERAMICS [J].

EKSTROM, T .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1989, 109 :341-349

[6]

JACK KH, 1987, CERAMICS CIVILISATIO, V3, P259

[7]

Lewis M. H., 1986, Non-Oxide Technical and Engineering Ceramics. Proceedings of the International Conference, P175

[8]

MANDAL H, 1992, SPECIAL CERAMICS, V9, P97

[9]

MITOMO M, 1988, ADV CERAM, V2, P147

[10] TWO-DIMENSIONAL SOLID-SOLUTION FORMATION OF Y-CONTAINING ALPHA-SI3N4 - COMMENTS [J].

SLASOR, S ;

THOMPSON, DP .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1987, 6 (03) :315-316

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