Abstract
The process of chemical vapor infiltration for densification of porous ceramic preforms consists of reactant diffusion and decomposition followed by solid product deposition in the porous body. A mathematical model for isothermal and nonisothermal CVI is presented where the transient porous structure is approximated by a Bethe lattice. Concepts of percolation theory are used to account for utilized, unutilized, and filled pore space. Diffusion coefficients are evaluated using the effective medium theory. The effect of pore connectivity, porosity distribution, operating pressure, inlet temperature, hot‐face temperature, and length of the preform on densification is studied. Optimum conditions for low residual porosities and uniform densification are suggested.
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.
