کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9803160 1516463 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Studies of P -C isotherms in RNi5-H (R: La, Pr, Nd, Sm, Gd, Tb and Dy) systems
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Studies of P -C isotherms in RNi5-H (R: La, Pr, Nd, Sm, Gd, Tb and Dy) systems
چکیده انگلیسی
We have investigated the hydrogenation and dehydrogenation properties of binary RNi5 (R: La, Pr, Nd, Sm, Gd, Tb and Dy) intermetallic compounds in the pressure range of 0.1-35 MPa and temperature range of 223-298 K. Pressure-composition isotherms demonstrated that as the atomic number of R increased in RNi5-H systems, the single pressure plateau (LaNi5) split into two plateaux (PrNi5, NdNi5, SmNi5 and GdNi5), and then into three plateaux (TbNi5 and DyNi5), indicating the presence of two hydrides (β2 and γ2 phases) and then three hydrides (β3, γ3 and δ3 phases). The β3-γ3 and γ3-δ3 phase transitions in the TbNi5-H system corresponded, respectively, to the α2-β2 and β2-γ2 transitions in the RNi5-H (R: Pr, Nd, Sm and Gd) systems having two plateaux.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volumes 404–406, 8 December 2005, Pages 47-50
نویسندگان
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