期刊
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
卷 28, 期 4, 页码 516-522出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrmhm.2010.02.010
关键词
WC-Ni-Co-Cr; Cemented carbide; Sintering; Microstructure; Oxidation resistance
资金
- El Centro para el Desarrollo Tecnologico e Industrial (CDTI)
Fully dense WC-Ni-Co-Cr alloys have been consolidated via sinter HIP processing. Dilatometric tests show that shrinkage undergoes several accelerations and decelerations during heating, a phenomenon likely associated to the heterogeneous distribution of Cr in the binder phase. WC grain growth follows trends similar to those described for WC-Co hardmetals, increasing with the C activity and the amount of liquid phase of the cermets. Finally, the oxidation resistance of WC-Ni-Co-Cr cemented carbides is observed to improve as the metal content increases and the C content decreases. In both cases, the oxide layers present a higher proportion of (Co, Ni)WO4 tungstates. The oxide scales formed on compositions with low metal content contain a higher amount of WO3 oxide. (C) 2010 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据