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 CNTs/Si3N4 ceramic matrix composites were prepared by the reaction bonded processing.The phase compositions, chemical compatibility, mechanical properties, and microwave attenuationproperties of the composites were investigated. XRD analysis shows the composites consist mainly of theα- and β-Si3N4, with a trace of unreacted silicon. The SEM micrograph displays the fractured surface ofthe composites studs with intact CNTs, indicating that CNTs and Si3N4 are chemically compatible. Thecomposites with 1.0wt.% CNTs have a strength of 280 MPa, hardness of 8.2 GPa and toughness of 2.3MPa·m0.5. The average value of the transmission attenuation reaches 6 dB at X band, indicating thecomposites have a potential for application in electromagnetic adsorbing or shielding
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1277.pdf
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