Abstract
This high temperature mass spectrometric study is aimed at the quantitative vaporization of powder beds of SiC–Al2O3 and related triphasic SiC–Al2O3–C and SiC–Al2O3-Si powder mixtures. The quantitative evaluation of reaction enthalpies showed that the different vaporization processes are not equilibrium processes and all the vaporization reactions are kinetically hindered. The multiple Knudsen cell method is used to determine directly the condensation coefficients of the Al(g), Al2O(g), CO(g) and SiO(g) species. Further, the comparison with previous equilibrium pressures calculated using thermodynamics allows the calculation of the evaporation coefficients of these species from the condensation coefficients and the measured mass spectrometric pressures. Supersaturated or undersaturated resultant pressures for each species are used as a criteria in the choice of suitable powder beds.
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.
