کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803247 | 1516463 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Vanadium-based BCC alloys: phase-structural characteristics and hydrogen sorption properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This work was focused on the studies of vanadium-based “low-temperature” bcc alloys as H storage materials. Both as cast and annealed at 1100â° C quaternary alloys V92.5âxâyZr7.5Ti7.5+xâyMy (Mâ=âCr, Mn, Fe, Co, Ni; x=0, 10; y=0, 7.5) were studied. They were characterised by XRD, PCT hydrogen absorption-desorption measurements (T=30 -120â° C) and thermal desorption spectroscopy studies of H desorption from the saturated hydrides (T=â100to800° C). The thermodynamics of the VHâ¼2â VHâ¼1 transition and hydrogen sorption capacities (1.55,â¦,1.80 H/M) were found to be significantly influenced by the substituting M-element. The reversible hydrogen storage capacity (T<100° C, P>0.1 âbar) reaches 50-60% of its overall value. Complete hydrogen desorption proceeds in vacuum at T<300° C. The major future challenge of the work is in increasing of the easy-reversible part of the H storage capacity corresponding to transformation VHâ¼2â VHâ¼1 by reducing the content of H in the monohydride.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volumes 404â406, 8 December 2005, Pages 421-426
Journal: Journal of Alloys and Compounds - Volumes 404â406, 8 December 2005, Pages 421-426
نویسندگان
M.V. Lototsky, V.A. Yartys, I.Yu. Zavaliy,