About: Grain boundary diffusion of Ge in Mg and Mg-Al solid solution

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Diffusion characteristics of Ge in Mg and Mg-1.8wt.%Al alloy were studied. The measurement was carried out by serial sectioning and by residual activity methods in temperature interval 448–848 K. Due to extremely low bulk solubility, Ge diffusion occurs almost exclusively in grain boundaries (GB’s). Hence, Ge diffusion coefficient Db in GB’s was directly evaluated at higher temperatures, whereas triple product P = Dbsδ (s, δ – segregation factor and GB thickness, respectively) was measured in low-temperature region. Obtained values of Db and P enabled to make a rough estimation of segregation factor s of Ge to GB’s. Diffusion characteristics of Ge in Mg and Mg-1.8wt.%Al alloy were studied. The measurement was carried out by serial sectioning and by residual activity methods in temperature interval 448–848 K. Due to extremely low bulk solubility, Ge diffusion occurs almost exclusively in grain boundaries (GB’s). Hence, Ge diffusion coefficient Db in GB’s was directly evaluated at higher temperatures, whereas triple product P = Dbsδ (s, δ – segregation factor and GB thickness, respectively) was measured in low-temperature region. Obtained values of Db and P enabled to make a rough estimation of segregation factor s of Ge to GB’s. (en) Byly studovány difúzní chacrakteristiky Ge v Mg a Mg-1.8wt.%Al slitině. Měření metodou odebírání vrstev a metodou zbytkové aktivity byla provedena v teplotním intervalu 448–848 K. Díky extrémně nízké rozpustnosti Ge v objemu probíhala difúze Ge diffusion vetšinou podél hranic zrn. Tak byl přímo zíkán koeficient difúze germania Db v hranicích zrn při nejvyších teplotách, difuzivita P = Dbsδ (s, δ – segregační faktor, šířka hranice zrn) byla naopak pměřena při nižších teplotách. Získané hodnoty Db a P umožnili hrubě odhanout segregační faktor s germania. (cs)
Title	Grain boundary diffusion of Ge in Mg and Mg-Al solid solution Grain boundary diffusion of Ge in Mg and Mg-Al solid solution (en) Difúze Ge podél hranic zrn v Mg a v tuhém roztoku Mg-Al (cs)
skos:prefLabel	Grain boundary diffusion of Ge in Mg and Mg-Al solid solution Grain boundary diffusion of Ge in Mg and Mg-Al solid solution (en) Difúze Ge podél hranic zrn v Mg a v tuhém roztoku Mg-Al (cs)
skos:notation	RIV/68081723:_____/06:00031159!RIV07-AV0-68081723
http://linked.open.../vavai/riv/strany	13;18
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA106/03/1355), P(IBS2041105), Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2007
http://linked.open...aciTvurceVysledku	Stloukal, Ivo Čermák, Jiří
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	Ústav fyziky materiálů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	477262
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/06:00031159
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	magnesium alloys; diffusion; grain boundaries (en)
http://linked.open.../riv/klicoveSlovo	diffusion grain boundaries magnesium alloys
http://linked.open...odStatuVydavatele	SK - Slovenská republika
http://linked.open...ontrolniKodProRIV	[6BB9BB68E848]
http://linked.open...i/riv/nazevZdroje	Kovové materiály
http://linked.open...in/vavai/riv/obor	BJ
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Transport processes during heat treatment in Mg-Al alloys Surfaces and interfaces in structural materials - applications of modern technologies and computer modelling
http://linked.open...UplatneniVysledku	2006
http://linked.open...v/svazekPeriodika	44
http://linked.open...iv/tvurceVysledku	Čermák, Jiří Stloukal, Ivo Eversheim, D.
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing
issn	0023-432X
number of pages	6 (xsd:int)

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