کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1569447 1514255 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrogen transport and trapping in EUROFER’97
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
Hydrogen transport and trapping in EUROFER’97
چکیده انگلیسی

The gas evolution permeation technique has been used to investigate the interaction of hydrogen with the reduced activation ferritic–martensitic steel EUROFER’97. The measurements were performed over the temperature range of 376–724 K with hydrogen driving pressures ranging from 5 × 104 to 1.5 × 105 Pa. The resultant diffusive transport parameters are: a diffusivity of D (m2 s−1) = 4.57 × 10−7exp(−22.3(kJ mol−1)/RT), a permeability of ϕ (mol m−1 Pa−1/2 s−1) = 1.03 × 10−8exp(−37.4(kJ mol−1)/RT) and a Sieverts’ constant of Ks (mol  m−3 Pa−1/2) = 2.25 × 10−2exp(−15.1(kJ mol−1)/RT). The resultant trapping parameters are: a trap density of Nt = 1.3 × 1025 m−3 and trapping energy of Et = 43.2 kJ mol−1. The possible sources of trapping are analysed and the most probable current mechanism in EUROFER’97 postulated. All the hydrogen transport parameters obtained for EUROFER’97 are compared to the available data corresponding to several steels of the same kind.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volumes 367–370, Part A, 1 August 2007, Pages 473–477
نویسندگان
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