Published 1976 | Version v1
Report Restricted

Temperature dependence of the enthalpy of formation of liquid Ge-Te alloys

Creators

  • 1. Centre National de la Recherche Scientifique, 13 - Marseille (France). Centre de Recherches de Microcalorimetrie et de Thermochimie

Description

Enthalpies of formation of Ge-Te alloys were measured by direct reaction calorimetry in the temperature range 1,030 < T/K < 1,150 and at mole fractions 0.25 < x(Ge) < 1. The measurements were performed with a high temperature (T/K < 1,400) Tian-Calvet calorimeter. When referred to liquid tellurium and liquid germanium, the enthalpy of formation is strongly negative in the whole investigated composition range and appears to be very sensitive to temperature. Such a behaviour is consistent with the existence of Ge-Te associations in the liquid state, disappearing with increasing temperature. (orig./HK)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Die Bildungsenthalpien von Ge-Te Legierungen wurden durch direkte Reaktionskalorimetrie im Temperaturbereich 1.030 < T/K < 1.150 und Konzentrationsbereich 0,25 < x(Ge) < 1 bestimmt. Die Messungen wurden mit einem hochtemperatur (T/K < 1.400) Tian-Calvet Kalorimeter ausgefuehrt. Bezogen auf die fluessigen Komponenten ist die Bildungsenthalpie in dem ganzen untersuchten Konzentrationsbereich stark negativ und sehr temperaturempfindlich. Dieses Verhalten zeigt auf die Bildung von Ge-Te Assoziationen im fluessigen Zustand, die bei erhoehter Temperatur verschwinden. (orig./HK)

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Additional details

Publishing Information

Imprint Pagination
7p.
Report number
AED-Conf--76-087-012

Conference

Title
Discussion meeting on physical chemistry of fluid metals.
Dates
10 Mar 1976.
Place
Koenigstein, F.R. Germany.

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
7265193
Subject category
S36: MATERIALS SCIENCE; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BINARY ALLOY SYSTEMS; CALORIMETRY; COMPARATIVE EVALUATIONS; FORMATION HEAT; GERMANIUM ALLOYS; LIQUID METALS; PHASE DIAGRAMS; TELLURIUM ALLOYS; TEMPERATURE DEPENDENCE
Descriptors DEC
ALLOY SYSTEMS; ALLOYS; DIAGRAMS; ELEMENTS; ENTHALPY; FLUIDS; LIQUIDS; METALS; PHYSICAL PROPERTIES; REACTION HEAT; THERMODYNAMIC PROPERTIES

Optional Information

Notes
3 figs.; 2 tabs.; 4 refs.