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Thermodynamic Properties of Intermediate Ni–P Phases (26–32.5 at. % P) between 971 and 1440 Kстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Zaitsev A.I., Zaitseva N.E., Shakhpazov E.Kh
- Журнал: Inorganic Materials
- Том: 39
- Номер: 5
- Год издания: 2003
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 427
- Последняя страница: 432
- DOI: 10.1023/A:1023643721556
- Аннотация: The vapor composition over and thermodynamic properties of crystalline nickel–phosphorus alloys (26–32.5 at. % P) are studied by Knudsen cell mass spectrometry between 971 and 1440 K. Mass spectra of the saturated vapor in the Ni–P system indicate the presence of the Ni+, P+ 2, and P+ ions. The P concentration in the vapor phase does not exceed 1% of the Р2 concentration. The experimental data are used to evaluate the complete set of thermodynamic functions of nickel phosphides. Based on the data for the low-temperature (α, γ) and high-temperature (β, δ) forms of Ni5P2 and Ni12P5 , the thermodynamic characteristics of the corresponding polymorphic transformations are evaluated. The results obtained for a large number of compositions under different experimental conditions (different effusion-cell and coating materials and effusion-orifice diameters) coincide to within the experimental error and are in good agreement with earlier reported phase-equilibrium data and enthalpies of formation, attesting to the high accuracy and reliability of the calculated thermodynamic functions.
- Добавил в систему: Зайцев Александр Иванович