Fabrication of silicide materials and their composites by reaction sintering

被引：14

作者：

Scholl, R ^{[1
]}

Böhm, A ^{[1
]}

Kieback, B ^{[1
]}

机构：

[1] Fraunhofer Inst Angew Mat Forsch, IFAM, Div Powder Met & Composite Mat Dresden, D-01277 Dresden, Germany

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1999年 / 261卷 / 1-2期

关键词：

refractory silicides; controlled reaction sintering; metal injection molding; MoSi2;

D O I：

10.1016/S0921-5093(98)01067-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The paper reports on a new powder metallurgical technique applicable for the preparation of refractory silicides, silicide composites, and other poorly sinterable materials. Starting from the fundamentals of sintering a general approach for reaction sintering of elemental powders-termed controlled reaction sintering (CRS)-will be given. The sintering behaviour of pre-alloyed powders, coarse elemental powders, and the mechanically treated elemental powder mixtures are compared. A detailed study of powder preparation, consolidation, CRS, and properties will be pointed out for MoSi2 and MoSi2-SiC composites. Several silicides (MoSi2, MoSi2-SiC, TiSi2, Ti5Si3, FeSi2, ReSi2) were produced by CRS. Properties such as fracture toughness, minimum creep rate, bending strength, and oxidation resistance were determined for MoSi2-based materials. The paper presents an outlook for different fabrication routes for silicides and silicide composites. as pressureless and pressure assisted sintering, metal injection moulding (MIM), and tape casting. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：204 / 211

页数：8

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