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:
The recrystallized carbon-ceramic composites were prepared from calcined coke, coal-tar pitchand Cr by hot-press to investigate the effects of Cr on the physical properties, mechanical properties andmicrostructure of recrystallized graphite. Experimental results showed that Cr doped recrystallizedgraphites exhibited higher bending strength and compressive strength and lower electrical resistivitywhen the Cr content is10wt% compared with pure graphite. Microstructural analyses revealed that thedegree of graphitization of recrystallized graphite increased and the layers spacing of microcrystallinedecreased with increasing the Cr concentration. XRD analysis indicated that Cr added to the carbonsubstrate was in the form of C, Cr2C3 and Cr2O3. The catalytic mechanism of Cr dopant to accelerate thegraphitization of carbon substrates can be explained by the mechanism of decomposition of the carbide
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1168.pdf
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