On the reaction sequence of WC-Co formation using an integrated mechanical and thermal activation process

被引：61

作者：

Ban, ZG ^{[1
]}

Shaw, LL ^{[1
]}

机构：

[1] Univ Connecticut, Dept Met & Mat Engn, Inst Mat Sci, Storrs, CT 06269 USA

来源：

ACTA MATERIALIA | 2001年 / 49卷 / 15期

基金：

美国国家科学基金会;

关键词：

reaction sequence;

D O I：

10.1016/S1359-6454(01)00209-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A systematic study on the reaction sequence of WC-Co composite formation by annealing high energy ball milled WO3, CoO and graphite powder mixtures in a hydrogen atmosphere has been conducted. X-ray diffraction has been used as the main tool to analyze the phase transformation of the powder mixture during processing. It was observed that WO3 is reduced to W phase by passing through the intermediate W20O58 and WO2 phases and the subsequent carburization sequence appears as W --> Co6W6C --> Co3W3C -->W2C --> WC. The intermediate Co3W has been found in the reduction stage, which can be subsequently carburized at higher temperatures. (C) 2001 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：2933 / 2939

页数：7

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