High-temperature superconducting polymer-ceramic compositions

Tonoyan, AO; Davtian, SP; Martirosian, SA; Mamalis, AG

dc.contributor.author	Tonoyan, AO	en
dc.contributor.author	Davtian, SP	en
dc.contributor.author	Martirosian, SA	en
dc.contributor.author	Mamalis, AG	en
dc.date.accessioned	2014-03-01T01:16:37Z
dc.date.available	2014-03-01T01:16:37Z
dc.date.issued	2001	en
dc.identifier.issn	0924-0136	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14123
dc.subject	polymer	en
dc.subject	ceramic	en
dc.subject	superconductivity	en
dc.subject.classification	Engineering, Industrial	en
dc.subject.classification	Engineering, Manufacturing	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Antioxidants	en
dc.subject.other	Binders	en
dc.subject.other	Ceramic materials	en
dc.subject.other	Heat treatment	en
dc.subject.other	High temperature superconductors	en
dc.subject.other	Hot pressing	en
dc.subject.other	Oxygen	en
dc.subject.other	Polymerization	en
dc.subject.other	Polymethyl methacrylates	en
dc.subject.other	Superconductivity	en
dc.subject.other	Ultrahigh molecular weight polyethylenes	en
dc.subject.other	Yttrium barium copper oxides	en
dc.subject.other	Transition critical temperature	en
dc.subject.other	Oxide superconductors	en
dc.title	High-temperature superconducting polymer-ceramic compositions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0924-0136(00)00755-X	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0924-0136(00)00755-X	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	Polymer-ceramic compositions, formed from polymeric binders (super high molecular polyethylene, polymethylmethacrylate) and superconducting ceramics (Y1Ba2Cu3O7-chi), were obtained by hot-pressing at 200 degreesC possessing 96 and 94 K transition critical temperature, respectively. Superconductivity of the composition is reduced as the ceramic's grain surface oxygen participates in thermo-oxidation destruction reaction with the binder. Thermal treatment at alpha -transition temperatures and in oxygen environment restores the superconducting properties of the composition. To sustain superconductivity of the composition immediately after the hot-pressing, i.e. eliminating the stage of restoration, very small quantities, about 1% of the binder's weight, of antioxidant organic compound has to be added in the initial mixture of polymer and ceramic. By the polymerization of merhylmethacrylate of the separate pre-pressed specimens of ceramic, Y1Ba2Cu3O7-chi - polymethylmethacrylate compositions were obtained. It was shown that the compositions obtained using the polymerization method maintained their superconducting properties. Anomalous impact of Y1Ba2Cu3O7-chi oxide ceramic on the kinetics of the initiated polymerization of methylmethacrylate by dinitrylazoisooleic acid was observed. (C) 2001 Published by Elsevier Science B.V.	en
heal.publisher	Elsevier Science S.A., Lausanne, Switzerland	en
heal.journalName	Journal of Materials Processing Technology	en
dc.identifier.doi	10.1016/S0924-0136(00)00755-X	en
dc.identifier.isi	ISI:000166532700015	en
dc.identifier.volume	108	en
dc.identifier.issue	2	en
dc.identifier.spage	201	en
dc.identifier.epage	204	en