Abstract
Titanium diboride (TiB2) appears to be an attractive candidate for a high-temperature
fiber reinforced composites. Chemical Vapor Infiltration (CVI) has been carried out for the
preparation of TiB2/C composites. Titanium diboride has been deposited from the gas mixtures of
TiCl4, BCl3, and H2 in the furnace at the reaction temperatures between 850 to 950 °C and about 20
torr. Effects of infiltration parameters such as temperature, reaction time, and concentrations of
BCl3 and H2 have been studied. Analyses with SEM, TGA and XPS were carried out. The
amount of deposition in the preform increased with the increases of the reaction time, temperature
and the flow rate of BCl3. The activation energy of the whole deposition reaction could be
estimated from the Arrhenius plot.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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