Experimental study and numerical modeling of pulse CVI for the production of organomorphic C/SiC composites

During the recent years, considerable attention has been given to the development of efficient and environmentally friendly technologies for the production of ceramic matrix composites. However, little research has been carried out on use of methylsilane (MS) as a halogen‐free precursor in the CVI p...

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Bibliographic Details
Published inInternational journal of applied ceramic technology Vol. 19; no. 1; pp. 91 - 100
Main Authors Kulik, Alexey, Bogachev, Evgeny, Kulik, Victor
Format Journal Article
LanguageEnglish
Published Malden Wiley Subscription Services, Inc 01.01.2022
Subjects
Ceramic matrix composites
Chemical vapor infiltration
Densification
Mathematical models
methylsilane
numerical modeling
Optimization
organomorphic preform
Precursors
Preforms
pulse chemical vapor infiltration
R&D
Research & development
SiC matrix
Silicon carbide
Temperature
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Summary:During the recent years, considerable attention has been given to the development of efficient and environmentally friendly technologies for the production of ceramic matrix composites. However, little research has been carried out on use of methylsilane (MS) as a halogen‐free precursor in the CVI process. The goal of this work was therefore to study the production of SiC‐matrix composites by pulse chemical vapor infiltration (PCVI) method with MS as a precursor and recently developed organomorphic frameworks as preforms. Experimental research was combined with numerical modeling to get deeper insight into the physical mechanisms underlying the technological process. Results of the study demonstrated that the PCVI allows performing the process with higher densification rate compared to continuous‐flow modifications of CVI. It is shown that optimization of PCVI providing a compromise between the utilization efficiency of the precursor, the densification uniformity, and the process time requires a proper choice of duration of the deposition stage and the process temperature. Numerical modeling proved to be a helpful tool in research and development of PCVI technology.
ISSN:1546-542X
1744-7402
DOI:10.1111/ijac.13855