Experimental determination of the Ta-Ge phase diagram

Antonio Augusto Araújo Pinto Da Silva; Gilberto Carvalho Coelho; Carlos Angelo Nunes; Paulo Atsushi Suzuki; Jean Marc Fiorani; Nicolas David; Michel Vilasi

doi:10.1016/j.jallcom.2013.04.070

Experimental determination of the Ta-Ge phase diagram

Antonio Augusto Araújo Pinto Da Silva
, Gilberto Carvalho Coelho
, Carlos Angelo Nunes
, Paulo Atsushi Suzuki
, Jean Marc Fiorani
, Nicolas David
, Michel Vilasi

University of São Paulo
Núcleo de Pesquisa
Nancy Université

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

In the present work, the Ta-Ge phase diagram has been experimentally studied, considering the inexistence of a Ta-Ge phase diagram in the literature. The samples were prepared via arc melting and characterized by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and X-ray Diffraction (XRD). The intermetallics phases βTa₃Ge, αTa₃Ge, βTa₅Ge₃ and TaGe₂ where confirmed in this system. Three eutectics reactions where determined with the liquid compositions at 20.5; 28.0; 97.0 at.% Ge. The phases βTa ₃Ge and βTa₅Ge₃ solidifies congruently while TaGe₂ is formed through a peritectic transformation. The temperature of the Ta-rich eutectic (L↔Ta_ss + βTa ₃Ge) was measured by the Pirani-Alterthum method at 2440 °C and the Ge-rich eutectic (L↔TaGe₂ + Ge_ss) by DTA at 937 °C.

langue originale	Anglais
Pages (de - à)	38-42
Nombre de pages	5
journal	Journal of Alloys and Compounds
Volume	576
Les DOIs	https://doi.org/10.1016/j.jallcom.2013.04.070
état	Publié - 1 janv. 2013
Modification externe	Oui

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10.1016/j.jallcom.2013.04.070

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@article{08c2035c811f49fabe054886b1c2f5ee,

title = "Experimental determination of the Ta-Ge phase diagram",

abstract = "In the present work, the Ta-Ge phase diagram has been experimentally studied, considering the inexistence of a Ta-Ge phase diagram in the literature. The samples were prepared via arc melting and characterized by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and X-ray Diffraction (XRD). The intermetallics phases βTa3Ge, αTa3Ge, βTa5Ge3 and TaGe2 where confirmed in this system. Three eutectics reactions where determined with the liquid compositions at 20.5; 28.0; 97.0 at.\% Ge. The phases βTa 3Ge and βTa5Ge3 solidifies congruently while TaGe2 is formed through a peritectic transformation. The temperature of the Ta-rich eutectic (L↔Tass + βTa 3Ge) was measured by the Pirani-Alterthum method at 2440 °C and the Ge-rich eutectic (L↔TaGe2 + Gess) by DTA at 937 °C.",

keywords = "Intermetallics, Phase diagrams, Scanning Electron Microscopy, X-ray Diffraction",

author = "\{Da Silva\}, \{Antonio Augusto Ara{\'u}jo Pinto\} and Coelho, \{Gilberto Carvalho\} and Nunes, \{Carlos Angelo\} and Suzuki, \{Paulo Atsushi\} and Fiorani, \{Jean Marc\} and Nicolas David and Michel Vilasi",

year = "2013",

month = jan,

day = "1",

doi = "10.1016/j.jallcom.2013.04.070",

language = "English",

volume = "576",

pages = "38--42",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

}

TY - JOUR

T1 - Experimental determination of the Ta-Ge phase diagram

AU - Da Silva, Antonio Augusto Araújo Pinto

AU - Coelho, Gilberto Carvalho

AU - Nunes, Carlos Angelo

AU - Suzuki, Paulo Atsushi

AU - Fiorani, Jean Marc

AU - David, Nicolas

AU - Vilasi, Michel

PY - 2013/1/1

Y1 - 2013/1/1

N2 - In the present work, the Ta-Ge phase diagram has been experimentally studied, considering the inexistence of a Ta-Ge phase diagram in the literature. The samples were prepared via arc melting and characterized by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and X-ray Diffraction (XRD). The intermetallics phases βTa3Ge, αTa3Ge, βTa5Ge3 and TaGe2 where confirmed in this system. Three eutectics reactions where determined with the liquid compositions at 20.5; 28.0; 97.0 at.% Ge. The phases βTa 3Ge and βTa5Ge3 solidifies congruently while TaGe2 is formed through a peritectic transformation. The temperature of the Ta-rich eutectic (L↔Tass + βTa 3Ge) was measured by the Pirani-Alterthum method at 2440 °C and the Ge-rich eutectic (L↔TaGe2 + Gess) by DTA at 937 °C.

AB - In the present work, the Ta-Ge phase diagram has been experimentally studied, considering the inexistence of a Ta-Ge phase diagram in the literature. The samples were prepared via arc melting and characterized by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and X-ray Diffraction (XRD). The intermetallics phases βTa3Ge, αTa3Ge, βTa5Ge3 and TaGe2 where confirmed in this system. Three eutectics reactions where determined with the liquid compositions at 20.5; 28.0; 97.0 at.% Ge. The phases βTa 3Ge and βTa5Ge3 solidifies congruently while TaGe2 is formed through a peritectic transformation. The temperature of the Ta-rich eutectic (L↔Tass + βTa 3Ge) was measured by the Pirani-Alterthum method at 2440 °C and the Ge-rich eutectic (L↔TaGe2 + Gess) by DTA at 937 °C.

KW - Intermetallics

KW - Phase diagrams

KW - Scanning Electron Microscopy

KW - X-ray Diffraction

U2 - 10.1016/j.jallcom.2013.04.070

DO - 10.1016/j.jallcom.2013.04.070

M3 - Article

AN - SCOPUS:84877823130

SN - 0925-8388

VL - 576

SP - 38

EP - 42

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Experimental determination of the Ta-Ge phase diagram

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