ISSN:
1013-9826
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
In this paper, the mechanical properties of porous Si3N4/SiC composite prepared by differentforming method (uniaxial pressing and gel-casting) were compared. Using gelcasting and two stepssintering technology, the porous SiC-particle/Si3N4 composites with a high strength, uniform structureand a relative high porosity were obtained by adding a little amount of nano carbon in slurry. The flexuralstrength of optimized material reaches to 100MPa and its porosity is more than 60%. But using uniaxialpressing and sintering at N2 atmosphere, because the green bodies have the high density, and the densitydistribution of a powder compact was not uniform, the flexural strength is not high, and at the same time,the microstructure is not uniform also
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1320.pdf
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