Abstract
The densification of WC–10Co (wt %) alloys is studied in relation with interface formation, below the melting temperature of the Co base binder phase. Two alloys containing an excess of carbon or tungsten are investigated. The evolution of the pore and Co phase size distribution is quantified at several temperatures using image analysis. While shrinkage and Co spreading start earlier in the W rich alloy, the reduction of porosity and Co spreading is more uniform in the C rich alloy. Preferential orientation relationships are frequently found at WC basal facets for WC/Co interfaces especially in the W rich alloy. A WC1-x film is also sometimes observed at randomly oriented WC/Co interfaces whatever the C content. The formation of low energy interfaces may explain the early spreading of the binder phase and the onset of densification in the solid state.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: International Journal of Refractory Metals and Hard Materials
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.