کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1580035 1645418 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Application of mechanical spectroscopy to studies of atomic diffusion in ordered compounds
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Application of mechanical spectroscopy to studies of atomic diffusion in ordered compounds
چکیده انگلیسی

An example of useful application of mechanical spectroscopy to diffusion measurements is presented. A thermally activated anelastic relaxation effect has been observed in Ni3Ga, an intermetallic compound of the L12 structure. The relaxation is of similar nature to that reported for Ni3Al [H. Numakura, K. Nishi, Mater. Sci. Eng. A 442 (2006) 59–62], and is attributed to stress-induced reorientation of Ga atoms in the Ni sublattice. By assuming the diffusion mechanism proposed for these compounds [H. Numakura, T. Ikeda, M. Koiwa, A. Almazouzi, Phil. Mag. A 77 (1998) 887–909], the diffusion coefficient of Ga has been evaluated from the relaxation rate. It agrees fairly well with the extrapolation of the high-temperature data of the tracer diffusion coefficient in the literature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volumes 521–522, 15 September 2009, Pages 34–38
نویسندگان
, ,