Vliv podmínek krystalizace na segregační charakteristiky legujících prvku v monokrystalech wolframu a molybdenu

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F07%3A00015777" target="_blank" >RIV/61989100:27360/07:00015777 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of crystallization conditions on segregation characteristics of alloying elements in tungsten and molybdenum single crystals

Popis výsledku v původním jazyce

The segregation phenomena and the formation of growth bands and cores during the crystallization have been studied experimentally. Low-alloyed single crystals of W and Mo doped with Ta were prepared by the electron beam floating zone melting (EBFZM) applying three different zone pass rates. The electron wave dispersive analysis was used for determination of concentration of admixtures on longitudinal sections. On the basis of chemical analysis, growth bands were found in these single crystals; they arecharacterized by sinusoidal waves of concentration profiles. Furthermore, concentration relations in the crystal and frozen zone were determined in order to ascertain effective segregation coefficients of alloying elements. Experimental investigations were performed in order to evaluate relations between chemical inhomogeneity and structural defects and their influence on some properties of single crystals.

Název v anglickém jazyce

Influence of crystallization conditions on segregation characteristics of alloying elements in tungsten and molybdenum single crystals

Popis výsledku anglicky

The segregation phenomena and the formation of growth bands and cores during the crystallization have been studied experimentally. Low-alloyed single crystals of W and Mo doped with Ta were prepared by the electron beam floating zone melting (EBFZM) applying three different zone pass rates. The electron wave dispersive analysis was used for determination of concentration of admixtures on longitudinal sections. On the basis of chemical analysis, growth bands were found in these single crystals; they arecharacterized by sinusoidal waves of concentration profiles. Furthermore, concentration relations in the crystal and frozen zone were determined in order to ascertain effective segregation coefficients of alloying elements. Experimental investigations were performed in order to evaluate relations between chemical inhomogeneity and structural defects and their influence on some properties of single crystals.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GP106%2F06%2FP288" target="_blank" >GP106/06/P288: Příprava a studium charakteristických vlastností monokrystalů binárních a ternárních nízkolegovaných slitin na bázi wolframu a molybdenu</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Gornyj informacionno-analitičeskij bjulleteň

ISSN

0236-1493

e-ISSN

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Svazek periodika

2007

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

RU - Ruská federace

Počet stran výsledku

10

Strana od-do

167-176

Kód UT WoS článku

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EID výsledku v databázi Scopus

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