Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1603229 | International Journal of Refractory Metals and Hard Materials | 2014 | 4 Pages |
Abstract
•Binderless WC ceramics were prepared by a reactive spark plasma sintering.•WC ceramics could be obtained after reactive sintering at 1500 °C.•WC ceramics exhibit a good hardness.
Binderless WC ceramics were prepared by reactive spark plasma sintering, using tungsten trioxide, tungsten and carbon black as the starting materials. Phase assemblages and microstructure of the as-sintered ceramics were investigated. It was found that graphite existed as an impurity phase due to the volatilization of WO3, and W could compensate for the WO3 loss to form WC with a single phase. Benefiting from the enhanced sinterability, WC ceramics with high relative density and good hardness could be obtained at temperature as low as 1500 °C.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Shi-Kuan Sun, Guo-Jun Zhang, Wen-Wen Wu, Ji-Xuan Liu, Ji Zou, Tohru Suzuki, Yoshio Sakka,