Abstract
Hot‐pressing of MoSi2 powders with carbon at high temperatures reduces the siliceous grain boundary phase in the resultant compact. The chemical reactions in this process were examined using the Knudsen cell technique. A 2.3 wt% oxygen MoSi2 powder and a 0.59 wt% oxygen MoSi2 powder, both with additions of 2 wt% carbon, were examined. The reduction of the siliceous grain boundary phase was examined at 1350 K and the resultant P(SiO)/P(CO) rations interpreted in terms of the SiO(g) and CO(g) isobars on the Si‐C‐O predominance diagram. The MoSi2+ carbon mixtures were then heated at the hot‐pressing temperature of 2100 K. Large weigh losses were observed and could be correlated with the formation of a low‐melting eutectic and the formation and vaporization of SiC.
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.
