Abstract
A novel biomimetic approach in designing and fabricating engineering ceramic materials has gained much interest in recent times. Following this approach, synthesis has been made of dense Si-SiC duplex ceramic composites and highly porous SiC ceramics in the image of the morphological features inherent in the caudex stem of a local monocotyledonous plant. The process route involves making of a carbonaceous biopreform and its subsequent reaction with an infiltrating silicon melt to yield the biomorphic Si-SiC ceramic composites with flexural strength and Young’s modulus of 264 MPa and 247 Gpa, respectively and loss in weight of only ∼9% during oxidative heating up to 1200°C in flowing air.
The Si-SiC composites were transformed into porous (49 vol.%) SiC ceramics with complete preservation of microcellular anatomy of the parent plant, by depleting residual silicon phase in channel pores through reaction with carbon. SiC based materials so derived can be used in structural applications and in designing high temperature filters and catalyst supports.
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References
Calvert P 1992Mater. Res. Soc. Bull. 17 36
Chakrabarti O P, Ghosh S and Mukerji J 1994Ceram. Int. 20 283
Chakrabarti O P, Maiti H S and Majumdar R 2002a Patent appli- cation, PCT/IB 02/05418
Chakrabarti O P, Maiti H S and Majumdar R 2002b Patent appli- cation, PCT/IB 02/05534
Chakrabarti O P, Maiti H S and Majumdar R 2003 Patent appli- cation, NF 345/03
Forrest C W, Kennedy P and Shennan J V 1972 inSpecial ceramics (ed.) P Popper (London: Brit. Ceram. Res. Assn.) Vol. 5, p. 99
Greil P, Lifka T and Kaindl A 1998J. Eur. Ceram. Soc. 18 1961
Heuer A Hetal 1992Science 225 1098
Popper P 1960 inSpecial ceramics (ed.) P Popper (London: Heywood and Co. Ltd.) Vol. 1 p. 209
Shin D W, Park S S, Choa Y H and Niihara K 1999J. Am. Ceram. Soc. 82 3251
Sieber H, Friedrich H, Schwarze D, Kaindl A and Greil P 2000Ceram. Trans. 108 571
Singh M 2000Ceram. Engg. Sci. Proc. 21 39
Srinivasan A V, Haritos G K and Hedberg F L 1991Appl. Mech. Rev. 44 463
Vincent J F V and Srinivasan A V 1992Biomimetics 1 1
Vogil E, Mukerji J, Hoffman C, Kladny R, Sieber H and Greil P 2001J. Am. Ceram. Soc. 84 1236
Vogil E, Sieber H and Greil P 2002J. Eur. Ceram. Soc. 22 2663
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Chakrabarti, O.P., Maiti, H.S. & Majumdar, R. Biomimetic synthesis of cellular SiC based ceramics from plant precursor. Bull Mater Sci 27, 467–470 (2004). https://doi.org/10.1007/BF02708565
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DOI: https://doi.org/10.1007/BF02708565