High-pressure synthesized nanostructural magnesium diboride-based materials for superconductive electromotors, generators and pumps

Prikhna, T; Gawalek, W; Novikov, N; Savchuk, Y; Zeisberger, M; Mamalis, A; Sergienko, N; Moshchil, V; Wendt, M; Habisreuther, T; Dou, SX; Dub, S; Melnikov, V; Schmidt, C; Jan, D; Nagorny, P

dc.contributor.author	Prikhna, T	en
dc.contributor.author	Gawalek, W	en
dc.contributor.author	Novikov, N	en
dc.contributor.author	Savchuk, Y	en
dc.contributor.author	Zeisberger, M	en
dc.contributor.author	Mamalis, A	en
dc.contributor.author	Sergienko, N	en
dc.contributor.author	Moshchil, V	en
dc.contributor.author	Wendt, M	en
dc.contributor.author	Habisreuther, T	en
dc.contributor.author	Dou, SX	en
dc.contributor.author	Dub, S	en
dc.contributor.author	Melnikov, V	en
dc.contributor.author	Schmidt, C	en
dc.contributor.author	Jan, D	en
dc.contributor.author	Nagorny, P	en
dc.date.accessioned	2014-03-01T01:56:29Z
dc.date.available	2014-03-01T01:56:29Z
dc.date.issued	2007	en
dc.identifier.issn	0924-0136	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/28122
dc.subject	MgB2-based bulk superconductor	en
dc.subject	high-pressure synthesis	en
dc.subject	Ta	en
dc.subject	Ti	en
dc.subject	SiC	en
dc.subject	Zr additions	en
dc.subject.classification	Engineering, Industrial	en
dc.subject.classification	Engineering, Manufacturing	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	CRITICAL-CURRENT DENSITY	en
dc.subject.other	MGB2	en
dc.subject.other	TI	en
dc.title	High-pressure synthesized nanostructural magnesium diboride-based materials for superconductive electromotors, generators and pumps	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	Additions of Zr can increase critical current density (j(c)) of high-pressure synthesized MgB2 (HPS-MgB2) in the same manner as additions of Ta or Ti, i.e. due to the absorption of impurity hydrogen (to form ZrH2). The formation in HPS-MgB2 of ZrB2 phase at higher synthesis temperatures (about 950 degrees C) does not result in the j(c) increase. Some increase in j(c) of HPS-MgB2 at 10 K in the fields higher than 8 T was observed when nano-SiC was added. The additions of Zr, Ta or Ti can prevent the harmful MgH2 impurity phase from appearing and may prevent hydrogen from being introduced into the material structure and besides, their presence in HPS-MgB2 promotes the formation of a higher amount of Mg-B (most likely MgB2) inclusions in the Mg-B-O material "matrix" that in turn leads to the increase of j(c) in magnetic fields. The high level of superconductive (SC) and mechanical characteristics attained for HPS-MgB2 and the possibility to manufacture large samples make its application in the superconductive electromotors, generators, pumps, etc., very promising. (c) 2006 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE SA	en
heal.journalName	JOURNAL OF MATERIALS PROCESSING TECHNOLOGY	en
dc.identifier.isi	ISI:000241963900016	en
dc.identifier.volume	181	en
dc.identifier.issue	1-3	en
dc.identifier.spage	71	en
dc.identifier.epage	75	en