Determination of distribution coefficients of admixtures in tungsten and molybdenum single crystals

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F08%3A00019383" target="_blank" >RIV/61989100:27360/08:00019383 - 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

Determination of distribution coefficients of admixtures in tungsten and molybdenum single crystals

Popis výsledku v původním jazyce

The aim of our experimental work was to study an influence of crystallization conditions on the segregation and structural characteristics of single crystals of low-alloyed molybdenum and tungsten alloys. Low-alloyed single crystals of W and Mo doped with Ta, Nb, W or Mo were prepared by the electron beam floating zone melting (EBFZM). The electron wave dispersive analysis was used for the determination of admixtures concentration on longitudinal sections. On the basis of chemical analysis were found the growth bands in these single crystals that are characterized by the sinusoidal wave of concentration profiles. Further the concentration relations in crystal and freeze zone in order to ascertain of effective segregation coefficients of alloying elements were determined. In order to evaluate relations between chemical inhomogeneity and structural defects and their influence on properties of single crystals there were experimentally investigated.

Název v anglickém jazyce

Determination of distribution coefficients of admixtures in tungsten and molybdenum single crystals

Popis výsledku anglicky

The aim of our experimental work was to study an influence of crystallization conditions on the segregation and structural characteristics of single crystals of low-alloyed molybdenum and tungsten alloys. Low-alloyed single crystals of W and Mo doped with Ta, Nb, W or Mo were prepared by the electron beam floating zone melting (EBFZM). The electron wave dispersive analysis was used for the determination of admixtures concentration on longitudinal sections. On the basis of chemical analysis were found the growth bands in these single crystals that are characterized by the sinusoidal wave of concentration profiles. Further the concentration relations in crystal and freeze zone in order to ascertain of effective segregation coefficients of alloying elements were determined. In order to evaluate relations between chemical inhomogeneity and structural defects and their influence on properties of single crystals there were experimentally investigated.

Druh

D - Stať ve sborníku

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

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceeding of the 18th Joint Seminar "Development of Materials Science in Research and Education"

ISBN

978-80-254-0864-3

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

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Název nakladatele

Czech and Slovak Crystallographic Association

Místo vydání

Praha

Místo konání akce

Hnanice

Datum konání akce

2. 9. 2008

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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