Calorimetric Determination of the Heats of Formation of Aluminum--Barium Alloys
The heats of formation of some Al--Ba alloys were determined by drop calorimetry at high temperature. The heats of mixing of pure liquid Al and Ba at 1215 deg K to give the liquid alloy are Delta H (XBa = 0.056) = --6.6 kJ/mole and Delta H (XBa = 0.333) = --31.0 kJ/mole. To measure its heat of forma...
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| Veröffentlicht in: | Thermochimica acta 1982-01, Vol.57 (1), p.57-66 |
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| container_title | Thermochimica acta |
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| creator | Notin, M Djamshidi, B Gachon, J C Hertz, J |
| description | The heats of formation of some Al--Ba alloys were determined by drop calorimetry at high temperature. The heats of mixing of pure liquid Al and Ba at 1215 deg K to give the liquid alloy are Delta H (XBa = 0.056) = --6.6 kJ/mole and Delta H (XBa = 0.333) = --31.0 kJ/mole. To measure its heat of formation, the solid compound Al4Ba was precipitated by addition of pure Ba from a liquid (Al, Ba) bath. It was found that Delta H (solid, 1215 deg K) = --(37.1 = 1.5) kJ/mole, with reference to the pure metals in the solid state.--Chem. Abs. |
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The heats of mixing of pure liquid Al and Ba at 1215 deg K to give the liquid alloy are Delta H (XBa = 0.056) = --6.6 kJ/mole and Delta H (XBa = 0.333) = --31.0 kJ/mole. To measure its heat of formation, the solid compound Al4Ba was precipitated by addition of pure Ba from a liquid (Al, Ba) bath. It was found that Delta H (solid, 1215 deg K) = --(37.1 = 1.5) kJ/mole, with reference to the pure metals in the solid state.--Chem. 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The heats of mixing of pure liquid Al and Ba at 1215 deg K to give the liquid alloy are Delta H (XBa = 0.056) = --6.6 kJ/mole and Delta H (XBa = 0.333) = --31.0 kJ/mole. To measure its heat of formation, the solid compound Al4Ba was precipitated by addition of pure Ba from a liquid (Al, Ba) bath. It was found that Delta H (solid, 1215 deg K) = --(37.1 = 1.5) kJ/mole, with reference to the pure metals in the solid state.--Chem. 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The heats of mixing of pure liquid Al and Ba at 1215 deg K to give the liquid alloy are Delta H (XBa = 0.056) = --6.6 kJ/mole and Delta H (XBa = 0.333) = --31.0 kJ/mole. To measure its heat of formation, the solid compound Al4Ba was precipitated by addition of pure Ba from a liquid (Al, Ba) bath. It was found that Delta H (solid, 1215 deg K) = --(37.1 = 1.5) kJ/mole, with reference to the pure metals in the solid state.--Chem. Abs.</abstract></addata></record> |
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| language | fre |
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| source | Elsevier ScienceDirect Journals |
| title | Calorimetric Determination of the Heats of Formation of Aluminum--Barium Alloys |
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