About: Sintering of yttria-stabilized zirconia nanopowders studied by positron annihilation spectroscopy

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About: Sintering of yttria-stabilized zirconia nanopowders studied by positron annihilation spectroscopy Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	A positron annihilation study of the tetragonal yttria stabilized zirconia (YSZ) nanopowder compacted under a high pressure and subjected to a sintering at temperatures ranging from 1000 to 1350 oC were investigated. The conventional positron lifetime and coincidence Doppler broadening measurements were performed. In the compacted nanopowder, positrons were found to annihilate mainly as trapped at vacancy-like defects (most likely the Zr vacancies) situated in the negative space-charge layers along grain boundaries (GB-s) or at larger defects associated with GB intersections (triple points). Moreover, pores of a few-nanometer size were detected via positronium pick-off annihilation in the YSZ nanopowders. These pores, however, disappeared after sintering at 1000 oC and a significant grain growth takes place above this temperature. A positron annihilation study of the tetragonal yttria stabilized zirconia (YSZ) nanopowder compacted under a high pressure and subjected to a sintering at temperatures ranging from 1000 to 1350 oC were investigated. The conventional positron lifetime and coincidence Doppler broadening measurements were performed. In the compacted nanopowder, positrons were found to annihilate mainly as trapped at vacancy-like defects (most likely the Zr vacancies) situated in the negative space-charge layers along grain boundaries (GB-s) or at larger defects associated with GB intersections (triple points). Moreover, pores of a few-nanometer size were detected via positronium pick-off annihilation in the YSZ nanopowders. These pores, however, disappeared after sintering at 1000 oC and a significant grain growth takes place above this temperature. (en)
Title	Sintering of yttria-stabilized zirconia nanopowders studied by positron annihilation spectroscopy Sintering of yttria-stabilized zirconia nanopowders studied by positron annihilation spectroscopy (en)
skos:prefLabel	Sintering of yttria-stabilized zirconia nanopowders studied by positron annihilation spectroscopy Sintering of yttria-stabilized zirconia nanopowders studied by positron annihilation spectroscopy (en)
skos:notation	RIV/00216208:11320/09:10084093!RIV11-GA0-11320___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA106/06/0270), P(KAN300100801), P(KJB101120906), Z(MSM0021620834)
http://linked.open...iv/cisloPeriodika	11
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Melikhova, Oksana Procházka, Ivan Kuriplach, Jan Čížek, Jakub
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	341441
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/09:10084093
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Positron annihilation.; Sintering; Defects; Nanopowders; Yttria-stabilized-zirconia (en)
http://linked.open.../riv/klicoveSlovo	Yttria-stabilized-zirconia Defects Nanopowders Positron annihilation. Sintering
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[ABE32F9331C5]
http://linked.open...i/riv/nazevZdroje	Physica Status Solidi. C. Solid State Physics
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Multifunctional bulk metallic materials with nanocrystalline and ultrafine-grained structure Hydrogen interaction with defects in zirconia Zirconia-based nanoceramic materials - microstructure investigation by positron annihilation spectroscopy
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	6
http://linked.open...iv/tvurceVysledku	Kuriplach, Jan Melikhova, Oksana Procházka, Ivan Čížek, Jakub Danilenko, I. A. Konstantinova, T. E.
http://linked.open...ain/vavai/riv/wos	000279544900091
http://linked.open...n/vavai/riv/zamer	Condensed Matter Physics – New Materials and Technologies
issn	1610-1634
number of pages	3 (xsd:int)
http://localhost/t...ganizacniJednotka	11320

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