About: The effect of crystallization conditions on tantalum distribution in molybdenum and tungsten during electron beam zone melting     Goto   Sponge   NotDistinct   Permalink

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  • The distribution of tantalum in molybdenum and tungsten single crystals during electron beam fl oating zone melting under different crystallization conditions was investigated. The performed line chemical analysis of specimens proved creation of tantalum micro segregation, so-called growth striations, which showed themselves on concentration proĀ les as periodically alternating areas with increased and decreased concentrations of tantalum. The existence of these chemical inhomogeneities suggests that stationary conditions of the crystal growth were disturbed during the zone melting, i.e. fl uctuations of microscopic rate of growth occurred due to convection in the melt. The determined effective distribution coefficients of tantalum in molybdenum and tungsten approach to calculated theoretical values of the equilibrium distribution coefficient.
  • The distribution of tantalum in molybdenum and tungsten single crystals during electron beam fl oating zone melting under different crystallization conditions was investigated. The performed line chemical analysis of specimens proved creation of tantalum micro segregation, so-called growth striations, which showed themselves on concentration proĀ les as periodically alternating areas with increased and decreased concentrations of tantalum. The existence of these chemical inhomogeneities suggests that stationary conditions of the crystal growth were disturbed during the zone melting, i.e. fl uctuations of microscopic rate of growth occurred due to convection in the melt. The determined effective distribution coefficients of tantalum in molybdenum and tungsten approach to calculated theoretical values of the equilibrium distribution coefficient. (en)
Title
  • The effect of crystallization conditions on tantalum distribution in molybdenum and tungsten during electron beam zone melting
  • The effect of crystallization conditions on tantalum distribution in molybdenum and tungsten during electron beam zone melting (en)
skos:prefLabel
  • The effect of crystallization conditions on tantalum distribution in molybdenum and tungsten during electron beam zone melting
  • The effect of crystallization conditions on tantalum distribution in molybdenum and tungsten during electron beam zone melting (en)
skos:notation
  • RIV/61989100:27360/14:86092307!RIV15-MSM-27360___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(ED0040/01/01), P(LO1203)
http://linked.open...iv/cisloPeriodika
  • 2
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 13201
http://linked.open...ai/riv/idVysledku
  • RIV/61989100:27360/14:86092307
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Zone melting; Tungsten; Tantalum; Molybdenum; Inhomogeneities (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • HR - Chorvatská republika
http://linked.open...ontrolniKodProRIV
  • [8A9915F869B0]
http://linked.open...i/riv/nazevZdroje
  • Metalurgija = Metallurgy
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
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http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 53
http://linked.open...iv/tvurceVysledku
  • Drápala, Jaromír
  • Skotnicová, Kateřina
  • Madaj, Michal
  • Kirillova, V. M.
http://linked.open...ain/vavai/riv/wos
  • 000326142100016
issn
  • 0543-5846
number of pages
http://localhost/t...ganizacniJednotka
  • 27360
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