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Isothermal section at 800°C of the ternary system Tm-Fe-Si

Identifieur interne : 002D00 ( Main/Merge ); précédent : 002C99; suivant : 002D01

Isothermal section at 800°C of the ternary system Tm-Fe-Si

Auteurs : M. Muller [Allemagne] ; H. Schmidt [Allemagne] ; H. F. Braun [Allemagne]

Source :

Journal of alloys and compounds [ 0925-8388 ] ; 1997.

RBID : Pascal:97-0478580

Descripteurs français

Pascal (Inist)
- Equilibre phase, Diagramme phase, Section isotherme, Thulium, Fer, Silicium, XRD, Métallographie, Structure cristalline, Composé intermétallique, Etude expérimentale, Alliage ternaire, Groupe espace, Système Fe Si Tm, 8130B.
Wicri :
- topic : Fer.

English descriptors

KwdEn :
- Crystal structure, Experimental study, Intermetallic compounds, Iron, Isothermal section, Metallography, Phase diagrams, Phase equilibria, Silicon, Space groups, Ternary alloys, Thulium, XRD.

Abstract

Copyright (c) 1997 Elsevier Science S.A. All rights reserved. The isothermal section at 800°C of the Tm-Fe-Si ternary phase diagram was investigated using X-ray diffractometry, metallographic analysis and EDX-microanalysis. We found eleven binary and at least nine ternary phases. For two ternary phases reported as Tm₂Fe₄Si₉ with Y₂Fe₄Si₉-type structure [1] and Tm₃Fe₂Si₇ with Ho₃Co₂Si₇-type structure [1] the composition could not be confirmed, but was found as Tm_9±1Fe_26±1Si_65±3 and Tm_21±1Fe_18.5±1Si_60.5±1. New ternary phases were found at compositions Tm_30±1Fe_12.8±1Si_57.2±1, which could be indexed orthorhombic, Tm_30±2Fe_5±1Si_65±3, Tm_37±1Fe_25±1Si_38±1 and Tm_40±1Fe_19±1Si_41±1. Two binary and four ternary phases are in equilibrium with the re-entrant superconducting compound Tm₂Fe₃Si₅, which are FeSi, TmSi, TmFe₂Si₂, Tm_21±1Fe_18.5±1Si_60.5±1, Tm_9±1Fe_26±1Si_65±1 and Tm_30±1Fe_12.8±1Si_57.2±1. The width of the homogeneity range of the Tm₂Fe₃Si₅ phase was determined to 1.6±0.4 at.% at constant Tm concentration and to 0.5±0.15 at.% at constant Fe/Si-ratio.

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Le document en format XML

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<term>Experimental study</term>
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<term>Isothermal section</term>
<term>Metallography</term>
<term>Phase diagrams</term>
<term>Phase equilibria</term>
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<term>Space groups</term>
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<term>Thulium</term>
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<term>Métallographie</term>
<term>Structure cristalline</term>
<term>Composé intermétallique</term>
<term>Etude expérimentale</term>
<term>Alliage ternaire</term>
<term>Groupe espace</term>
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<front><div type="abstract" xml:lang="en">Copyright (c) 1997  Elsevier Science S.A. All rights reserved. The isothermal section at 800°C of the Tm-Fe-Si ternary phase diagram was investigated using X-ray diffractometry, metallographic analysis and EDX-microanalysis. We found eleven binary and at least nine ternary phases. For two ternary phases reported as Tm<sub>2</sub>
Fe<sub>4</sub>
Si<sub>9</sub>
 with Y<sub>2</sub>
Fe<sub>4</sub>
Si<sub>9</sub>
-type structure [1] and Tm<sub>3</sub>
Fe<sub>2</sub>
Si<sub>7</sub>
 with Ho<sub>3</sub>
Co<sub>2</sub>
Si<sub>7</sub>
-type structure [1] the composition could not be confirmed, but was found as Tm<sub>9±1</sub>
Fe<sub>26±1</sub>
Si<sub>65±3</sub>
 and Tm<sub>21±1</sub>
Fe<sub>18.5±1</sub>
Si<sub>60.5±1</sub>
. New ternary phases were found at compositions Tm<sub>30±1</sub>
Fe<sub>12.8±1</sub>
Si<sub>57.2±1</sub>
, which could be indexed orthorhombic, Tm<sub>30±2</sub>
Fe<sub>5±1</sub>
Si<sub>65±3</sub>
, Tm<sub>37±1</sub>
Fe<sub>25±1</sub>
Si<sub>38±1</sub>
 and Tm<sub>40±1</sub>
Fe<sub>19±1</sub>
Si<sub>41±1</sub>
. Two binary and four ternary phases are in equilibrium with the re-entrant superconducting compound Tm<sub>2</sub>
Fe<sub>3</sub>
Si<sub>5</sub>
, which are FeSi, TmSi, TmFe<sub>2</sub>
Si<sub>2</sub>
, Tm<sub>21±1</sub>
Fe<sub>18.5±1</sub>
Si<sub>60.5±1</sub>
, Tm<sub>9±1</sub>
Fe<sub>26±1</sub>
Si<sub>65±1</sub>
 and Tm<sub>30±1</sub>
Fe<sub>12.8±1</sub>
Si<sub>57.2±1</sub>
. The width of the homogeneity range of the Tm<sub>2</sub>
Fe<sub>3</sub>
Si<sub>5</sub>
 phase was determined to 1.6±0.4 at.% at constant Tm concentration and to 0.5±0.15 at.% at constant Fe/Si-ratio.</div>
</front>
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Isothermal section at 800°C of the ternary system Tm-Fe-Si

Isothermal section at 800°C of the ternary system Tm-Fe-Si

Source :

Descripteurs français

English descriptors

Abstract

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Links to Exploration step

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Pour manipuler ce document sous Unix (Dilib)

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