Excess molar enthalpies of {(1 − x2 − x3)Al + x2Bi + x3Ga}(I) alloys

Girard, C.; Baret, R; Miane, J.M.; Bros, J.P.

doi:10.1016/0021-9614(85)90045-x

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…Using a high temperature microcalorimeter, enthalpies of formation of binary and ternary liquid alloys have been measured over large concentration ranges and at several temperatures: 725, 817,823,948, 972, 981, 985, 1073, 1123, 1136, 1142, and 1 170 K (12). Six sections were investigated: (12) or Muggianu (14) equations with a ternary term obtained by using the least-squares method. Moreover, these calorimetric measurements allow us to obtain some points on the equilibrium phase diagram.…”

Section: A1 + Bi + Gamentioning

confidence: 99%

Microcalorimetry and thermochemistry of alloys

Bros¹

1988

Can. J. Chem.

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This paper is dedicated to Professor Jarnes A . Morrison JEAN P. BROS. Can. J. Chem. 66, 824 (1988). High temperature microcalorimetry is a very fruitful techfiique for increasing our knowledge of the thermochemistry of multicomponent alloys. As a good example, calorimetric results obtained for the Al + Bi + Ga system have been selected. Using a Calvet microcalorimeter and the indirect drop method, enthalpies of formation were measured over the entire concentration range between 725 and 1 170 K and several points of the phase diagram were deduced from these calorimetric results. By means of a computer program, the A1 + Bi + Ga equilibrium phase diagram was calculated and thus a thermodynamic description can be predicted. Making use of some simplifying hypotheses, the results indicate a satisfactory agreement between the experimental and the calculated liquid miscibility gap. JEAN P. BROS. Can. J. Chem. 66, 824 (1988). Avec l'energie libre de Gibbs, la fonction enthalpie de formation, obtenue par calorimktrie directe, joue un r81e important dans I'ttude thermodynamique des alliages; pour le systeme Al + Bi + Ga, les risultats expirimentaux choisis constituent un bon exemple. En effet, par microcalorimCtrie haute temperature, les chaleurs de formation i pression constante ont Ct C mesurkes sur tout le domaine de composition diverses temperatures (725 K < T < 1170 K). De plus, dans certaines conditions, ces mesures permettent d'accCder directement aux coordonnees de quelques points du diagramme d'equilibre des phases. A l'aide d'un programme de calcul et de quelques hypoth&ses simplificatrices, ces rksultats ont conduit, avec une precision satisfaisante, i la localisation de la lacune de miscibilitC ternaire i 1'Ctat liquide de cet alliage.[Traduit par la revue]

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Section: A1 + Bi + Gamentioning

confidence: 99%

Microcalorimetry and thermochemistry of alloys

Bros¹

1988

Can. J. Chem.

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Potentiometrie Investigations of the Liquid Al + Ga + Sb Alloy Between 623 K and 1300 K

Girard

Miane

Riou

et al. 1988

Ber Bunsenges Phys Chem

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Twenty three alloys AI+ Ga + Sb have been studied by the Emf method between 623 and 1300 K using concentration cells of the type: AI/(AI 3 + in LiCI + KCI (liq.))/(Al+Ga+Sb).Partial molar functions of aluminium and some equilibrium temperatures were determined; they are in satisfactory agreement with the calculation of Kaufman et al. -The comparison of the experimental ternary dmixGAI values and the corresponding ones calculated using several empirical equations shows that the best agreement is obtained by Colinet's equation.

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Excess molar enthalpies of {(1 − x2 − x3)Al + x2Bi + x3Ga}(I) alloys

Cited by 2 publications

References 12 publications

Microcalorimetry and thermochemistry of alloys

Microcalorimetry and thermochemistry of alloys

Potentiometrie Investigations of the Liquid Al + Ga + Sb Alloy Between 623 K and 1300 K

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