کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7719321 | 1497493 | 2014 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Generalized model of desorption kinetics: Characterization of hydrogen trapping in a homogeneous membrane
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Generalized model of desorption kinetics: Characterization of hydrogen trapping in a homogeneous membrane Generalized model of desorption kinetics: Characterization of hydrogen trapping in a homogeneous membrane](/preview/png/7719321.png)
چکیده انگلیسی
In this work, we numerically simulated permeations tests on thin martensitic steel membranes using finite elements analyses to determine the behavior of hydrogen during desorption. Starting from a formal model of hydrogen diffusion, we considered cases with one or two kinds of trap sites. We noticed a delay in the desorption of the trapped hydrogen when the trap binding energy rises or when the untrapping jump frequency decreases. The lattice hydrogen may be free from the influence of hydrogen trapping during the desorption if the trapping phenomenon is too weak or too strong. By considering reversible and irreversible trap sites, we notice that the irreversible traps become predominant over the reversible traps. In that case, the lattice hydrogen and reversibly trapped hydrogen behave similarly and may be associated to “diffusible” hydrogen.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 16, 27 May 2014, Pages 8374-8384
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 16, 27 May 2014, Pages 8374-8384
نویسندگان
E. Legrand, X. Feaugas, J. Bouhattate,