ISSN:
1013-9826
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:
Chopped fiber and a hybrid reinforcement of chopped and continuous fibers were used forfabricating SiC/SiC composites. Under the selected sintering pressure, the composite sintered at lowertemperature (1820°C) had lower density. Increasing temperature to 1850°C, the density of the compositereached at a higher level. However, pores still existed and mainly distributed in the areas the fibersaccumulated, especially inside of the fiber bundles. Densely sintered matrix still could be found in thecomposite sintered at 1820°C, 15 MPa. In the areas with the fibers accumulated, matrix was relativelyweak so that the cracks were easily propagated leading to the delamination during bending test. Whencontinuous fiber was included into the chopped fiber reinforced composite, a hybrid reinforcingmechanism was obtained. This kind of composite had obviously improved toughness and strength. On thefracture surface, the pulled out fibers that were perpendicular to the fracture surface were increased
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1257.pdf
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