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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F10%3A10069754%21RIV11-MSM-11320___
rdf:type
n12:Vysledek skos:Concept
dcterms:description
Positron annihilation spectroscopy (oPs lifetime, coincidence Doppler broadening techniques) was employed for defect studies of %22Ti%22-based nanocomposites prepared by high-energy ball milling. It was found that size of nanoscopic holes is reduced with increasing milling time in H2 /He atmosphere and also probability of Ps formation in holes decreases. At the same time the Ti content in the vicinity of holes increases. A simple explanation of these observations was suggested. The effect of filling the nanoscopic pores with hydrogen is enhanced in TiH2 milled with h-BN or B in He atmosphere. Sufficiently long milling time leads to a similar size distribution of nanoscopic holes in Ti/h-BN and Ti/B, despite the fact that it differs substantially in the initial powders, however, density of nanoscopic holes in Ti/B is significantly lower than in Ti/h-BN Positron annihilation spectroscopy (oPs lifetime, coincidence Doppler broadening techniques) was employed for defect studies of %22Ti%22-based nanocomposites prepared by high-energy ball milling. It was found that size of nanoscopic holes is reduced with increasing milling time in H2 /He atmosphere and also probability of Ps formation in holes decreases. At the same time the Ti content in the vicinity of holes increases. A simple explanation of these observations was suggested. The effect of filling the nanoscopic pores with hydrogen is enhanced in TiH2 milled with h-BN or B in He atmosphere. Sufficiently long milling time leads to a similar size distribution of nanoscopic holes in Ti/h-BN and Ti/B, despite the fact that it differs substantially in the initial powders, however, density of nanoscopic holes in Ti/B is significantly lower than in Ti/h-BN
dcterms:title
Size distributions of nanoscopic holes in Ti/h-BN and Ti/B nanocomposites Size distributions of nanoscopic holes in Ti/h-BN and Ti/B nanocomposites
skos:prefLabel
Size distributions of nanoscopic holes in Ti/h-BN and Ti/B nanocomposites Size distributions of nanoscopic holes in Ti/h-BN and Ti/B nanocomposites
skos:notation
RIV/00216208:11320/10:10069754!RIV11-MSM-11320___
n3:aktivita
n9:P n9:Z
n3:aktivity
P(KAN300100801), P(MEB100912), Z(MSM0021620834)
n3:cisloPeriodika
4
n3:dodaniDat
n5:2011
n3:domaciTvurceVysledku
n4:7037945 n4:9949097
n3:druhVysledku
n10:J
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
287630
n3:idVysledku
RIV/00216208:11320/10:10069754
n3:jazykVysledku
n15:eng
n3:klicovaSlova
nanocomposites; Ti/B; Ti/h-BN; nanoscopic holes; Size distributions
n3:klicoveSlovo
n16:nanocomposites n16:Ti%2FB n16:Ti%2Fh-BN n16:nanoscopic%20holes n16:Size%20distributions
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[2FF208D21FA7]
n3:nazevZdroje
Journal of Applied Physics
n3:obor
n18:BM
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
5
n3:projekt
n7:MEB100912 n7:KAN300100801
n3:rokUplatneniVysledku
n5:2010
n3:svazekPeriodika
107
n3:tvurceVysledku
Morozova, O. S. Pundt, A. Procházka, Ivan Čížek, Jakub Borchers, C.
n3:wos
000275028900025
n3:zamer
n17:MSM0021620834
s:issn
0021-8979
s:numberOfPages
11
n13:organizacniJednotka
11320