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Processing of Silicon Oxycarbide Foams by Steam Chest Molding and Pyrolysis
Author(s) -
Kim YoungWook,
Eom JungHye,
Park Chul B.,
Zhai Wentao,
Guo Yanting,
Balasubramanian Maridass
Publication year - 2010
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.04087.x
Subject(s) - materials science , molding (decorative) , pyrolysis , composite material , porosity , ceramic , microsphere , silicon , chemical engineering , metallurgy , engineering
This paper reports a new processing strategy for manufacturing ceramic foams based on a steam chest molding and pyrolysis process. Silicon oxycarbide (SiOC) foams were fabricated from a polysiloxane‐hollow microsphere blend using the newly developed process. During steam chest molding, the polysiloxane softened and the hollow microspheres expanded, resulting in a three‐dimensional shape. During heat treatment, the microspheres decomposed and the polysiloxane transformed to an amorphous SiOC, resulting in SiOC foams with a porosity of 62%–81%.