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The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

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On the Temperature Dependence of the Heat of Formation of the Compound Agmg.

AD673044

Publication Date	1968
Personal Author	Jena, A. K.; Bever, M. B.
Page Count	14
Abstract	Heats of formation at 78K, 195K and 273K of the compound AgMg containing 50.1 at. pct Mg were measured by metal solution calorimetry. The relative partial gram-atomic enthalpy of silver in liquid tin-rich solutions at infinite dilution was also measured. The temperature coefficient of the heat of formation is negative and appreciable near 78K, but with increasing temperature it decreases gradually to a small value near room temperature. This is consistent with the reported high-temperature heat contents of AgMg, Ag and Mg. It is suggested that such behavior of the temperature dependence of the heat of formation can be explained on the basis of the contributions from lattice heat capacities. (Author)
Keywords	Silver compounds Magnesium compounds Intermetallic compounds Heat of formation Calorimetry Silver alloys Magnesium alloys Tin alloys Heat of solution Enthalpy
NTIS Subject Category	71J - Iron & Iron Alloys 99F - Physical & Theoretical Chemistry
Corporate Authors	Massachusetts Inst of Tech Cambridge Dept of Metallurgy and Materials Science
Document Type	Technical Report
Title Note	Technical rept.
NTIS Issue Number	196819
Contract Number	NONR-3963(19)

On the Temperature Dependence of the Heat of Formation of the Compound Agmg.

On the Temperature Dependence of the Heat of Formation of the Compound Agmg.
AD673044

Publication Date	1968
Personal Author	Jena, A. K.; Bever, M. B.
Page Count	14
Abstract	Heats of formation at 78K, 195K and 273K of the compound AgMg containing 50.1 at. pct Mg were measured by metal solution calorimetry. The relative partial gram-atomic enthalpy of silver in liquid tin-rich solutions at infinite dilution was also measured. The temperature coefficient of the heat of formation is negative and appreciable near 78K, but with increasing temperature it decreases gradually to a small value near room temperature. This is consistent with the reported high-temperature heat contents of AgMg, Ag and Mg. It is suggested that such behavior of the temperature dependence of the heat of formation can be explained on the basis of the contributions from lattice heat capacities. (Author)
Keywords	Silver compounds Magnesium compounds Intermetallic compounds Heat of formation Calorimetry Silver alloys Magnesium alloys Tin alloys Heat of solution Enthalpy
NTIS Subject Category	71J - Iron & Iron Alloys 99F - Physical & Theoretical Chemistry
Corporate Authors	Massachusetts Inst of Tech Cambridge Dept of Metallurgy and Materials Science
Document Type	Technical Report
Title Note	Technical rept.
NTIS Issue Number	196819
Contract Number	NONR-3963(19)