Structure and hardness of a hard metal alloy prepared with a WC powder synthesized at low temperature

被引：19

作者：

da Costa, F. A. ^{[1
]}

de Medeiros, F. F. P. ^{[1
]}

da Silva, A. G. P. ^{[2
]}

Gomes, U. U. ^{[3
]}

Filgueira, M. ^{[2
]}

de Souza, C. P. ^{[4
]}

机构：

[1] Univ Fed Rio Grande do Norte, Programa Posgrad Ciencia & Engn Mat, BR-59072970 Natal, RN, Brazil

[2] UENF, Lab Mat Avancados, BR-28015620 Campos Dos Goytacazes, RJ, Brazil

[3] Univ Fed Rio Grande do Norte, Dept Fis Teor & Expt, BR-59072970 Natal, RN, Brazil

[4] Univ Fed Rio Grande do Norte, Lab Termodinam & Reatores, BR-59072970 Natal, RN, Brazil

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 485卷 / 1-2期

关键词：

WC-Co alloy; sintering; gas-solid reaction; hardness; cemented carbides;

D O I：

10.1016/j.msea.2007.08.058

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The structure and hardness of a WC-IOwt% Co alloy prepared with an experimental WC powder are compared with those of another alloy of the same composition produced under the same conditions and prepared with a commercial WC powder. The experimental WC powder was synthesized by a gas-solid reaction between APT and methane at low temperature and the commercial WC powder was conventionally produced by a solid-solid reaction between tungsten and carbon black. WC-10 wt% Co alloys with the two powders were prepared under the same conditions of milling and sintering. The structure of the sample prepared with the experimental WC powder is homogeneous and coarse grained. The structure of the sample prepared with the commercial powder is heterogeneous. Furthermore the size and shape of the WC grains are significantly different. @ 2007 Elsevier B.V. All rights reserved.

引用

页码：638 / 642

页数：5

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