Producción y caracterización de partículas y fibras cortas de β-Sic obtenidas a partir de cáscara de arroz
Valencia-García, M. F. (Marco Fidel) | 2014-05-07
The use of the rice hull is minimal in most of the Latin American countries and only a small portion is
used as fertilizer or fuel. However, products of rice hull obtained by pyrolysis can be useful for abrasive and
refractory products based on silicon carbide (SiC). Recently some applications have been developed to use
SiC as reinforcement for metallic alloys for metal matrix composites.
This paper reports the synthesis of short fibers and small particles of SiC obtained by controlled combustion
of rice hull. The SiC synthesis was performed in a gas furnace, designed during the research. This
process was optimized by an experimental design which included as variables the temperature, pyrolysis
time, the type of catalyst, and process atmosphere.