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:
Internal friction of 2D C/SiC composites fabricated by chemical vapor infiltration (CVI)method was measured by dynamical mechanical analysis (DMA) at different frequencies from roomtemperature (RT) to 400°C in air atmosphere. Internal friction of 2D C/SiC composites increasedgradually with increasing temperature and then decreased after damping peak appeared in thetemperature range of 250°C to 300°C. Damping capacity and peak value decreased gradually withincreasing frequency, accompanied with a shift of damping peak towards lower temperatures.Moreover, the effect of interphase thickness on damping behavior of 2D C/SiC composites wasinvestigated. The results showed that damping peak of the composites increased gradually and thetemperature of the peak shifted to the lower temperature with increasing PyC interphase thickness,when the interphase thickness is in the range of 90~296nm. The influence of interphase thickness oninterfacial bonding strength, sliding resistance and the microstructure of SiC matrix was discussed,which was considered to be responsible for the results
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.1531.pdf
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