In situ platelet-toughened TiB2-SiC composites prepared by reactive pulsed electric current sintering

被引：42

作者：

Ran, Songlin ^{[2
]}

Van der Biest, Omer ^{[1
]}

Vleugels, Jef ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Met & Mat Engn MTM, B-3001 Heverlee, Belgium

[2] Anhui Univ Technol, Sch Mat Sci & Engn, Anhui Key Lab Met Mat & Proc, Maanshan 243002, Peoples R China

来源：

SCRIPTA MATERIALIA | 2011年 / 64卷 / 12期

关键词：

Texture; Borides; Reactive pulsed electric current sintering; Grain growth; Mechanical properties; TEMPERATURE CERAMICS; BORON-CARBIDE; DENSIFICATION; ZIRCONIUM; MICROSTRUCTURE; TOUGHNESS;

D O I：

10.1016/j.scriptamat.2011.03.015

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Partially textured TiB2-SiC composites were prepared by reactive pulsed electric current sintering of attrition-milled TiH2-B-SiC-B4C powder mixtures. Plate-like TiB2 grains, formed in situ with their elongated direction perpendicular to the pressing direction, improved both the strength and fracture toughness of the composites. The TiB2 composites with 20-30 vol.% SiC combined a three-point flexural strength of 625-695 MPa with a Vickers hardness of 21.1-23.5 GPa and a fracture toughness of 5.7-7.3 MPa m(1/2). (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1145 / 1148

页数：4

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