کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9803210 1516463 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Diffusion of hydrogen in the shape memory alloy Ni47Ti40Hf10Cu3
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Diffusion of hydrogen in the shape memory alloy Ni47Ti40Hf10Cu3
چکیده انگلیسی
The H chemical diffusion coefficient Dc has been determined in the Ni47Ti40Hf10Cu3 alloy from the kinetics of the gas/solid-surface reaction in the temperature range 350-1000 K. The mobility of H was also investigated by mechanical spectroscopy at temperatures included between 240 and 260 K, where a Snoek internal friction peak occurs for frequencies in the kHz range. The results on the Einstein diffusion coefficient DE obtained from the relaxation time of the Snoek effect were correlated to the high temperature absorption results. Combined Arrhenius plots of DE and Dc data allow to determine the H diffusion parameters to: W=0.47±0.01  eV, D0=2×10−3.0±0.2  cm2/s.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volumes 404–406, 8 December 2005, Pages 261-264
نویسندگان
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