کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5454759 | 1514359 | 2017 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced analysis of nanoporous gold by atom probe tomography
ترجمه فارسی عنوان
تجزیه و تحلیل پیشرفته طلا نانوپروس با توموگرافی پروب اتم
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
Atom probe tomography (APT) analysis on nanoporous materials is typically a difficult task, owing to their inferior mechanical properties and their complex field evaporation behaviour, compared with solid consolidated materials. A method for pore infiltration by electrodeposition, detailed in this study, makes it possible to prepare APT samples of nanoporous gold (NPG) using conventional FIB processes, and obtain APT data of good quality with high yield. APT analysis of the NPG material, produced by dealloying, reveals detailed compositional variation within the structures of the nanoscale ligaments. Profiles of the ligaments show exteriors rich in Au, with Ag-rich cores that are very close to the original alloy composition. With this approach the extended analysis into NPG and other nanoporous materials becomes practical, using as a foundation for future work the sample preparation and analysis methodology of this study.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 128, June 2017, Pages 269-277
Journal: Materials Characterization - Volume 128, June 2017, Pages 269-277
نویسندگان
A.A. El-Zoka, B. Langelier, G.A. Botton, R.C. Newman,