[NZP]: A new family of ceramics with low thermal expansion and tunable properties

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	2014-03-01T01:25:30Z
dc.date.available	2014-03-01T01:25:30Z
dc.date.issued	2007	en
dc.identifier.issn	0955-2219	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17693
dc.subject	NZP ceramics	en
dc.subject	Powders solid state reaction	en
dc.subject	Thermal expansion	en
dc.subject	Thermal shock resistance	en
dc.subject.classification	Materials Science, Ceramics	en
dc.subject.other	Bending strength	en
dc.subject.other	Heat resistance	en
dc.subject.other	Physical properties	en
dc.subject.other	Porosity	en
dc.subject.other	Thermal expansion	en
dc.subject.other	Powders solid state reaction	en
dc.subject.other	Sodium zirconium phosphate (NZP)	en
dc.subject.other	Thermal shock resistance	en
dc.subject.other	Tunable properties	en
dc.subject.other	Ceramic materials	en
dc.subject.other	Bending strength	en
dc.subject.other	Ceramic materials	en
dc.subject.other	Heat resistance	en
dc.subject.other	Physical properties	en
dc.subject.other	Porosity	en
dc.subject.other	Thermal expansion	en
dc.title	[NZP]: A new family of ceramics with low thermal expansion and tunable properties	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jeurceramsoc.2006.04.021	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jeurceramsoc.2006.04.021	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	Ceramic materials belonging in the sodium zirconioum phosphate (NZP), family were prepared and characterized, with the view to identify a ceramic material, that may be used as honeycomb material in three way catalysts (TWC). Two different families were studied. The first one belongs to the system Ca1-xBaxZr4P6O24 (x = 0-1). This system was chosen because CaZr4P6O24 contracts while BaZr4P6O24 expands on heating. The material for x = 0.25 has a thermal expansion coefficient value close to zero and its flexural strength varies between 36 and 50 MPa for porosity of 17-28%. However, this system is quite unstable in acidic environments. Another NZP system, namely Ba1+xZr4P6-2xSi2xO24 (x = 0-0.4) was investigated. The effect of the addition of Si substituting P was studied. As x increases, the thermal expansion coefficient decreases. For x = 0.22, the material is chemically stable and has a TEC value close to zero. Its porosity was quite high (36-47%) combined with flexural strength in the range of 20-40 MPa. Additionally, it was proved that materials with adequate physical and mechanical properties can be produced at relatively fast firing schedules. Optimum calcination time is 4 h and optimum sintering time is 8 h. © 2006 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Journal of the European Ceramic Society	en
dc.identifier.doi	10.1016/j.jeurceramsoc.2006.04.021	en
dc.identifier.isi	ISI:000243265100141	en
dc.identifier.volume	27	en
dc.identifier.issue	2-3	en
dc.identifier.spage	1253	en
dc.identifier.epage	1258	en