Cellular SiC ceramic from stems of corn-processing and microstructure

SiC-based cellulosic composites were prepared using maize and barley stems as precursors. Reactive melt infiltration has been chosen as processing method. Inspite of very weak and thin cell walls of maize stems, honeycomb microstructure of maize stems was retained by using a slow infiltration techni...

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Bibliographic Details
Published in:Journal of materials science 2006-04, Vol.41 (8), p.2443-2448
Main Authors: BHATTACHARYA, Anup K, HEINRICH, Jürgen G
Format: Article
Language:English
Subjects:
Applied sciences
Barley
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Composite materials
Corn
Cylinders
Exact sciences and technology
High temperature
Honeycomb
Honeycomb construction
Infiltration
Maize
Materials science
Microstructure
Miscellaneous
Silicon carbide
Stems
Technical ceramics
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Summary:SiC-based cellulosic composites were prepared using maize and barley stems as precursors. Reactive melt infiltration has been chosen as processing method. Inspite of very weak and thin cell walls of maize stems, honeycomb microstructure of maize stems was retained by using a slow infiltration technique. Residual silicon could also be removed from the final composite by treating the infiltrated sample under high vaccum and at high temperature viz.1600°C. Hollow cylindrical SiC composites were obtained from the stems of barley and SiC-cylinders supported by honeycomb SiC core was obtained from the stems of maize. Detailed microstructural features of the pyrolysed and infiltrated maize/barley stems were explored in this work.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-006-5155-5