ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Biomorphic silicon carbide ceramics is very promising as a natural base material forbiomedical applications due to their excellent mechanical-biochemical properties and biocompatiblebehaviour. This innovative material is produced by molten-Si infiltration of carbon templatesobtained by controlled pyrolysis of biological precursors. The final product is a light, tough andhigh-strength material with predictable microstructure.In this study the possibility to produce biomorphic silicon carbide ceramics using marine precursorsis demonstrated. Due to the great biodiversity offered by the marine medium, a previous selectionof algae (Laminaria ochroleuca Bachelot de la Pylaie, Undaria pinnatifida (Harvey) Suringar,Saccorhiza polyschides (Lightfoot) Batters and Cystoseira baccata (Gmelin) Silva) and marineplants (Zostera marina L. and Juncus maritimus L.) was carried out, taking into account itsmicrostructure, porosity and interconnectivity of each species.The bioceramization process was evaluated in three phases: original material analysis, pyrolysisprocess and reactive melt Si-infiltration. For each marine precursor, a detailed study by ScanningElectron Microscopy (SEM) of the natural material, the carbon preform and the final SiCbiomorphic product is described. The viability to obtain biomorphic SiC ceramic material for all theselected marine precursors is discussed
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.587-588.67.pdf
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