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	Volume 2, Issue 2 Pg 109 - 218 (October 2009)
	Volume 2, Issue 1 Pg 1 - 108 (July 2009)

Volume 1 (2009)

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International Journal of Materials Engineering and Technology

are used as precursors for the production of SiC using two silicon sources: sol (Levasil) and powder. Liquid silica

sol is infiltrated into pine, beech and maple in order to produce a porous SiC structure mimicking that of wood. The liquid sol is vacuum infiltrated into the pyrolyzed wood species, dried and reacted at

under a

flow of argon. Scanning electron microscopy (SEM) showed SiC grains formed on the interior of the tracheid walls and a high density of SiC whiskers are discovered in certain tracheids of pine and vessels of beech and maple. In addition, infiltration of carbonized pine wood by various stoichiometric amounts of liquid silicon is achieved in order to determine the sufficient amount to obtain a porous SiC structure. The carbonized pine wood is placed on top of the silicon bed of powder and heated to

for 1 hr in a vacuum atmosphere. Infiltration is based on capillary forces within the preform. To understand the infiltration front of the liquid silicon an infiltrated pine sample is ground to different depths. Optical microscope, SEM and EDS are used for microstructure characterization and phase identification.

International Journal of Materials Engineering and Technology
Volume 2, Issue 2, Pages 141 - 159 (October 2009)

FORMATION OF SILICON CARBIDE FROM PYROLYZED NORTHERN WOOD SPECIES
D. Cree (Canada) and M. Pugh (Canada)

Abstract:
This research entails the use of a “green” structure that is already available, thus saving time, energy and cost of manufacturing. Semi-porous silicon carbide (SiC) structures are conceived from various wood species. Carbonized wood species measuring

are used as precursors for the production of SiC using two silicon sources: sol (Levasil) and powder. Liquid silica

under a

Keywords and phrases: silicon carbide, silica sol, infiltration, wood ceramics.

Communicated by M. Misbahul Amin

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