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:
In order to contribute to the development of the joining technique of Cf/SiC, joining ofSiC ceramic to high strength graphite was investigated. This joining has been successfully realizedby reaction joining process using a preceramic polymer, polysiloxane, mixed with the activeadditive Al-Si powder as joining material. The weld strength is strongly affected by thetechnological parameters and the ingredient ratio (polysiloxane:Al-Si powder). The optimizedfactors have been obtained by orthogonal experiments, under which the achieved three-pointbending strength of the joints is 96.8% of the strength of the welding base material graphite. Themicrostructure and composition of the weld zone were analyzed by SEM, EDX and XRD. Theresults show that the joining material has transformed into a densified interlayer with the thicknessof about 15μm. Also, diffusion takes place in the interfacial area, which contributes to a soundinterfacial bonding. The interlayer is composed of SiC, Al2O3 and Si
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.2092.pdf
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