Thermodynamics and amorphization of the nickel-lanthanum alloysстатья

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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.

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[1] Thermodynamics and amorphization of the nickel-lanthanum alloys / A. I. Zaitsev, N. E. Zaitseva, N. A. Arutyunyan, S. F. Dunaev // Chemical Engineering Communications. — 2007. — Vol. 194, no. 12. — P. 1579–1595. The thermodynamic properties of liquid and crystalline Ni–La alloys were studied over the whole range of compositions and a wide temperature range, 685–1854 K, by Knudsen mass spectrometry and an integral variant of the effusion method realized under ultrahigh oilless vacuum. Complete and reliable thermodynamic description of all intermediate phases in the Ni–La system was obtained. The thermodynamic functions of the melts were described by the associated solution model. The existence of the complexes NiLa and Ni2La in the melts was found. The contributions of various intercomponent chemical interaction types (covalent and metallic) to thermodynamic functions were estimated. The present results were applied to computation of the phase diagram. Obtained thermodynamic description of the Ni–La alloys allowed the analysis of their transformation into amorphous state. It was determined that the magnitude of the associate formation entropy should be used for quantitative concept development of the propensity of metallic melts to amorphization. [ DOI ]

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