Abstract
The influence of adsorbed oxygen on the properties of samples and the kinetics of spark plasma sintering of pure tungsten carbide and hard alloy powders has been investigated. It is shown that oxygen leads to the formation of W2C and η - phases in pure tungsten carbide and in hard alloys, respectively. It was found that adsorbed oxygen does not significantly affect the shrinkage kinetics of powder compacts. The activation energy of the intensive second stage of sintering of pure tungsten carbide and hard alloy powders was 9 and 12 kTm, respectively. Samples of pure tungsten carbide were characterized by high values of hardness (near 25 GPa) and crack resistance (4.7 MPa·m1/2).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
