Stabilized tialite-mullite composites with low thermal expansion and high strength for catalytic converters

Oikonomou, P; Dedeloudis, Ch; Stournaras, CJ; Ftikos, Ch

dc.contributor.author	Oikonomou, P	en
dc.contributor.author	Dedeloudis, Ch	en
dc.contributor.author	Stournaras, CJ	en
dc.contributor.author	Ftikos, Ch	en
dc.date.accessioned	2014-03-01T01:27:17Z
dc.date.available	2014-03-01T01:27:17Z
dc.date.issued	2007	en
dc.identifier.issn	0955-2219	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18380
dc.subject	Al2TiO5	en
dc.subject	Chemical stability	en
dc.subject	Mechanical properties	en
dc.subject	Mullite	en
dc.subject	Thermal expansion	en
dc.subject.classification	Materials Science, Ceramics	en
dc.subject.other	Bending strength	en
dc.subject.other	Catalytic converters	en
dc.subject.other	Chemical stability	en
dc.subject.other	Decomposition	en
dc.subject.other	Iron oxides	en
dc.subject.other	Mullite	en
dc.subject.other	Porosity	en
dc.subject.other	Solid solutions	en
dc.subject.other	Thermal expansion	en
dc.subject.other	Aluminum titanate	en
dc.subject.other	Four point bending strength	en
dc.subject.other	Tialite	en
dc.subject.other	Ceramic matrix composites	en
dc.subject.other	Bending strength	en
dc.subject.other	Catalytic converters	en
dc.subject.other	Ceramic matrix composites	en
dc.subject.other	Chemical stability	en
dc.subject.other	Decomposition	en
dc.subject.other	Iron oxides	en
dc.subject.other	Mullite	en
dc.subject.other	Porosity	en
dc.subject.other	Solid solutions	en
dc.subject.other	Thermal expansion	en
dc.title	Stabilized tialite-mullite composites with low thermal expansion and high strength for catalytic converters	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jeurceramsoc.2006.07.020	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jeurceramsoc.2006.07.020	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	Aluminium titanate (AT) is a potential candidate material for use in demanding high temperature applications, because it exhibits an excellent thermal shock resistance due to its low thermal expansion coefficient and high refractoriness. However, industrial applications of this material are hindered by two major limitations. Its decomposition to (alpha-Al2O3 and TiO2 between 800 and 1280 degrees C and its low mechanical strength. The present work aims to stabilize aluminium titanate with the addition of Fe2O3. The decomposition of aluminium titanate-iron oxide solid solutions when heated at 1100 degrees C for up to 1000 h was studied. The effect of iron oxide addition on pure aluminium titanate properties was investigated. Additionally, strengthening of the iron stabilized AT with mullite was considered adding mullite (M), 3Al(2)O(3) center dot 2SiO(2) to tialite body at various amounts (5-50%, w/w). Properties like four point bending strength, thermal expansion coefficient (TEC), and porosity of the composites, were evaluated. Finally, the effect of mullite on the mechanical properties of AT-mullite composites was investigated. It was found that aluminium titanate (iron oxide stabilized)-mullite composites exhibit very good mechanical strength combined with excellent thermal stability. (c) 2007 Published by Elsevier Ltd.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Journal of the European Ceramic Society	en
dc.identifier.doi	10.1016/j.jeurceramsoc.2006.07.020	en
dc.identifier.isi	ISI:000250691800011	en
dc.identifier.volume	27	en
dc.identifier.issue	12	en
dc.identifier.spage	3475	en
dc.identifier.epage	3482	en