Galvanostatic electrophoretic deposition of yttriumsilicate on C/C-Si-SiC composites

Grosse-Brauckmann, J; Damjanovic, T; Argirusis, C

dc.contributor.author	Grosse-Brauckmann, J	en
dc.contributor.author	Damjanovic, T	en
dc.contributor.author	Argirusis, C	en
dc.date.accessioned	2014-03-01T02:52:00Z
dc.date.available	2014-03-01T02:52:00Z
dc.date.issued	2009	en
dc.identifier.issn	10139826	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35803
dc.subject	C/C-Si-SiC	en
dc.subject	Carbon composites	en
dc.subject	EPD	en
dc.subject	Oxidation protection	en
dc.subject	Yttrium silicate	en
dc.subject.other	C/C-Si-SiC	en
dc.subject.other	Carbon composites	en
dc.subject.other	EPD	en
dc.subject.other	Oxidation protection	en
dc.subject.other	Yttrium silicate	en
dc.subject.other	Carbon carbon composites	en
dc.subject.other	Carbon fibers	en
dc.subject.other	Electrophoretic coatings	en
dc.subject.other	Electrophoretic mobility	en
dc.subject.other	Iodine	en
dc.subject.other	Oxidation	en
dc.subject.other	Oxygen	en
dc.subject.other	Protective coatings	en
dc.subject.other	Silicates	en
dc.subject.other	Silicon	en
dc.subject.other	Silicon carbide	en
dc.subject.other	Suspensions (fluids)	en
dc.subject.other	Thermogravimetric analysis	en
dc.subject.other	Yttrium	en
dc.subject.other	Yttrium alloys	en
dc.subject.other	Atmospheric temperature	en
dc.title	Galvanostatic electrophoretic deposition of yttriumsilicate on C/C-Si-SiC composites	en
heal.type	conferenceItem	en
heal.identifier.primary	10.4028/www.scientific.net/KEM.412.243	en
heal.identifier.secondary	http://dx.doi.org/10.4028/www.scientific.net/KEM.412.243	en
heal.publicationDate	2009	en
heal.abstract	The use of carbon fibre reinforced carbon composites in oxidizing atmospheres is limited to temperatures below 400 °C. To benefit from their excellent mechanical strength that is still preserved at high temperatures, suitable oxidation protection coating systems have to be developed. Composites which are capillary infiltrated with Si and coated with SiC via chemical vapour deposition show significantly enhanced oxidation resistance. For the increase of service temperature above 1300 °C, high temperature stable materials with low oxygen diffusivities such as yttrium silicates have to complement the SiC coating. The electrophoretic deposition performed under constant current conditions leads to relatively high green densities and therefore good sinterability of the applied coatings. In this work we present the preparation of suspensions, their characterization regarding particle size and electrophoretic mobility for yttrium silicate powder prepared by the solid state method. Depending on particle charge and conductivity of the investigated suspensions iodine is employed to increase particle charge. The use of current densities between 0.5-5mA/cm2 leads to smooth and homogeneous layers. Layers sintered as low as 1400 °C for 2h already show promising protection of the C/C-Si-SiC substrate during thermogravimetric analysis.	en
heal.journalName	Key Engineering Materials	en
dc.identifier.doi	10.4028/www.scientific.net/KEM.412.243	en
dc.identifier.volume	412	en
dc.identifier.spage	243	en
dc.identifier.epage	248	en