Constitution of the systems {Ta,Nb,V}-Sb in the Sb-rich part (> 50 at.% Sb)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F14%3A00076496" target="_blank" >RIV/00216224:14740/14:00076496 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Constitution of the systems {Ta,Nb,V}-Sb in the Sb-rich part (> 50 at.% Sb)

Popis výsledku v původním jazyce

The phase diagrams of the {Ta,V}-Sb systems have been investigated by XRPD, LOM, EPMA, and DTA in closed quartz ampoules up 1050°C, and in sealed Ta crucibles up to 1450°C. The results were compared with the previously established Nb-Sb system. The result from Melnyk et al. was confirmed in this investigation since it is in very good agreement with our investigation. The following binary phases in the Ta-Sb systems: Ta3Sb, Ta5Sb4, and TaSb2 were found to be stable at 900°C. For the V-Sb system, additional binary phases are present and their mechanism of formation is different from that of the {Ta,Nb}-Sb systems. Diffusion couple experiment between V-VSb2 revealed that the following binary phases are stable at 800°C: V3Sb, V3Sb2 (ht), V7.46Sb9, and VSb2. The phase V5Sb4 previously known in the literature was found to be stable below 800°C. In contrast to the {Ta,Nb}-Sb system, only V3Sb, V3Sb2, and VSb2 were found in as cast state, which indicates peritectic formation. The other phases,

Název v anglickém jazyce

Constitution of the systems {Ta,Nb,V}-Sb in the Sb-rich part (> 50 at.% Sb)

Popis výsledku anglicky

The phase diagrams of the {Ta,V}-Sb systems have been investigated by XRPD, LOM, EPMA, and DTA in closed quartz ampoules up 1050°C, and in sealed Ta crucibles up to 1450°C. The results were compared with the previously established Nb-Sb system. The result from Melnyk et al. was confirmed in this investigation since it is in very good agreement with our investigation. The following binary phases in the Ta-Sb systems: Ta3Sb, Ta5Sb4, and TaSb2 were found to be stable at 900°C. For the V-Sb system, additional binary phases are present and their mechanism of formation is different from that of the {Ta,Nb}-Sb systems. Diffusion couple experiment between V-VSb2 revealed that the following binary phases are stable at 800°C: V3Sb, V3Sb2 (ht), V7.46Sb9, and VSb2. The phase V5Sb4 previously known in the literature was found to be stable below 800°C. In contrast to the {Ta,Nb}-Sb system, only V3Sb, V3Sb2, and VSb2 were found in as cast state, which indicates peritectic formation. The other phases,

Druh

O - Ostatní výsledky

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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