کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7740053 | 1497991 | 2013 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparison of focused ion beam versus nano-scale X-ray computed tomography for resolving 3-D microstructures of porous fuel cell materials
ترجمه فارسی عنوان
مقایسه اشعه یونی متمرکز در مقیاس نانو کامپوزیت کیفی اشعه ایکس برای حل ریز ساختارهای سهبعدی مواد سلول سوختی متخلخل
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کلمات کلیدی
پرتو یون متمرکز شده، اشعه ایکس، توموگرافی کامپیوتری، نانوتوموگرافی، ریز ساختار، سلول سوختی الکترولیت پلیمر،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
Focused ion beam-scanning electron microscopy (FIB-SEM) and nano-scale X-ray computed tomography (nano-CT) have emerged as two popular nanotomography techniques for quantifying the 3-D microstructure of porous materials. The objective of this study is to assess the unique features and limitations of FIB-SEM and nano-CT in capturing the 3-D microstructure and structure-related transport properties of porous fuel cell materials. As a test case, a sample of a micro-porous layer used in polymer electrolyte fuel cells is analyzed to obtain 3-D microstructure datasets using these two nanotomography techniques. For quantitative comparison purposes, several key transport properties are determined for these two datasets, including the porosity, pore connectivity, tortuosity, structural diffusivity coefficient, and chord length (i.e., void size) distributions. The results obtained for both datasets are evaluated against each other and experimental data when available. Additionally, these two techniques are compared qualitatively in terms of the acquired images, image segmentation, and general systems operation. The particular advantages and disadvantages of both techniques are highlighted, along with suggestions for best practice.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 241, 1 November 2013, Pages 608-618
Journal: Journal of Power Sources - Volume 241, 1 November 2013, Pages 608-618
نویسندگان
E.A. Wargo, T. Kotaka, Y. Tabuchi, E.C. Kumbur,