Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.msea.2006.05.118
Title: Effects of lower cobalt binder concentrations in sintering of tungsten carbide
Authors: Li, T.
Li, Q.
Fuh, J.Y.H. 
Yu, P.C.
Wu, C.C.
Keywords: Abnormal grain growth
Cemented tungsten carbide
Hardness test
W2C phase
Issue Date: 25-Aug-2006
Citation: Li, T., Li, Q., Fuh, J.Y.H., Yu, P.C., Wu, C.C. (2006-08-25). Effects of lower cobalt binder concentrations in sintering of tungsten carbide. Materials Science and Engineering A 430 (1-2) : 113-119. ScholarBank@NUS Repository. https://doi.org/10.1016/j.msea.2006.05.118
Abstract: Cemented tungsten carbides have received much attention because of their superior characteristics. Traditional cemented tungsten carbides usually contain 3-30 wt% binder phase. In this paper, WC with low Co concentration less than 3 wt% is studied using traditional powder metallurgy. The binder phase has tremendous effect on sinterability of WC. High sinterability and high hardness can be achieved for the WC (0.7 μm) with 0.5 wt% Co. Abnormal grain growth (AGG) is often observed in sintering WC with small amount of Co. It seems that AGG is affected by the concentration of Co and a range of Co concentrations may exist for the large amount of AGG. To control the grain size, VC is added to inhibit the grain growth of WC. It is observed that the hardness is affected by the amount of addition of VC. Controlling the ratio of C/W less than unity at low Co concentrations will result in the production of W2C phase. The hardness of WC-Co is affected by the amount of W2C phase in the sample and W2C is stable during the normal cooling process. © 2006 Elsevier B.V. All rights reserved.
Source Title: Materials Science and Engineering A
URI: http://scholarbank.nus.edu.sg/handle/10635/85077
ISSN: 09215093
DOI: 10.1016/j.msea.2006.05.118
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

34
checked on May 19, 2018

WEB OF SCIENCETM
Citations

28
checked on Apr 3, 2018

Page view(s)

40
checked on May 4, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.