Composites from WC powders sputter-deposited with iron rich binders

被引：20

作者：

Femandes, C. M. ^{[1
]}

Senos, A. M. R. ^{[1
]}

Vieira, M. T. ^{[2
]}

Fernandes, J. V. ^{[2
]}

机构：

[1] Univ Aveiro, Dept Ceram & Glass Engn, CICEO, P-3810193 Aveiro, Portugal

[2] Univ Coimbra, Dept Mech Engn, CEMUC, P-3030788 Coimbra, Portugal

来源：

CERAMICS INTERNATIONAL | 2009年 / 35卷 / 04期

关键词：

Mechanical properties; Hardness; Carbides; Sputter-coated powders; TUNGSTEN CARBIDE POWDERS; STAINLESS-STEEL; CEMENTED CARBIDES; FRACTURE-TOUGHNESS; PHASE-DIAGRAMS; CO COMPOSITES; HARD METALS; PARTICLES; MICROSTRUCTURE; LOAD;

D O I：

10.1016/j.ceramint.2008.09.009

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：

Composite powders of tungsten carbide (WC) and iron rich binder were prepared by an innovative approach, which consists in sputtering of a metallic binder on the tungsten carbide particles. The phase composition, microstructure and mechanical behaviour of WC coated powder composites with binder contents from 6 to 9 wt.% were characterized. eta-Phase is early formed during sintering and its effect on the mechanical behaviour was investigated and related to the microstructure and atomic structure. The results show that the presence of eta-phase has not a hazardous role in toughness as is previewed in conventional cemented carbide. Despite the presence of q-phase, a good compromise between toughness and hardness was attained in composites prepared from iron rich binders sputtered on WC powders. (C) 2008 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：1617 / 1623

页数：7

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