About: Constitution of the systems {Ta,Nb,V}-Sb in the Sb-rich part (> 50 at.% Sb)     Goto   Sponge   NotDistinct   Permalink

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  • 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, V7.
  • 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, V7. (en)
Title
  • Constitution of the systems {Ta,Nb,V}-Sb in the Sb-rich part (> 50 at.% Sb)
  • Constitution of the systems {Ta,Nb,V}-Sb in the Sb-rich part (> 50 at.% Sb) (en)
skos:prefLabel
  • Constitution of the systems {Ta,Nb,V}-Sb in the Sb-rich part (> 50 at.% Sb)
  • Constitution of the systems {Ta,Nb,V}-Sb in the Sb-rich part (> 50 at.% Sb) (en)
skos:notation
  • RIV/00216224:14740/14:00076496!RIV15-MSM-14740___
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  • P(7AMB13AT019), P(ED1.1.00/02.0068)
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  • 8671
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  • RIV/00216224:14740/14:00076496
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  • thermoelectrics; phase diagram; thermal analysis; X-ray analysis; electron microscopy (en)
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  • [F80E82C38088]
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  • Brož, Pavel
  • Grytsiv, Andrei
  • Rogl, Peter Franz
  • Failamani, Fainan
  • Maccio, Daniele
  • Saccone, Adriana
http://localhost/t...ganizacniJednotka
  • 14740
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