Capillary infiltration studies of liquids into 3D-stitched C–C preforms: Part A: Internal pore characterization by solvent infiltration,mercury porosimetry,and permeability studies |
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| Authors: | Suresh Kumar Anil Kumar Anupam Shukla AK Gupta Rohini Devi |
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| Affiliation: | 1. Advanced Systems Laboratory (DRDO), Hyderabad 500058, India;2. Department of Chemical Engineering, IIT Delhi, New Delhi 110016, India;1. ICIMSI-SUPSI, Manno, Switzerland;2. Petroceramics SPA, Stezzano, Italy;3. Fricke und Mallah Microwave Technology GmbH, Peine, Germany;4. Istituto per i Processi Chimico-Fisici, UOS Pisa, Consiglio Nazionale delle Ricerche, Pisa, Italy;5. Brembo SGL Carbon Ceramic Brakes, Stezzano, Italy;6. Erbicol SA, Viale Carlo Pereda 22, 6828 Balerna, Switzerland;1. College of Automobile and Mechanical Engineering, Changsha University of Science and Technology, Changsha, China;2. National Engineering Research Center for Mechanical Product Remanufacturing, Academy of Armored Forces Engineering, Beijing, China;3. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, China;4. State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China;1. Central Glass and Ceramic Research Institute, CSIR, Kolkata 700032, West Bengal, India;2. North East Institute of Science and Technology, CSIR, Jorhat 785006, Assam, India |
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| Abstract: | Mathematical modeling of silicon infiltration in porous carbon–carbon (C–C) preforms is the key to fabricate liquid silicon infiltration based carbon–silicon carbide (C–SiC) composite components. Existing models for silicon infiltration are based on straight capillaries. For interconnected capillary systems, e.g. as in 3D-stitched C–C preforms these show large deviations when compared with experimental observations. The aim of the present study is to develop a mathematical model suitable for silicon infiltration in 3D-stitched C–C preforms. The work is being presented in two parts: A and B. This part (Part A) describes the experimental details pertaining to the fabrication of the C–C preforms and their pore structure characterization by mercury porosimetry, infiltration of solvents by capillary rise, and by permeability studies. A two-pore capillary infiltration model termed as modified Washburn equation has been proposed. It has been validated by experimental data of solvent infiltration. The same model correlates silicon infiltration observations as well (Part B). |
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