کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1501546 993386 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Formation of ultrafine nanoporous gold related to surface diffusion of gold adatoms during dealloying of Al2Au in an alkaline solution
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Formation of ultrafine nanoporous gold related to surface diffusion of gold adatoms during dealloying of Al2Au in an alkaline solution
چکیده انگلیسی

Nanoporous gold (NPG) with ultrafine ligaments/channels (less than 10 nm) can be obtained by the dealloying of Al2Au in an alkaline solution at room temperature. The surface diffusivity of Au adatoms was evaluated as 2.1 × 10−23, 2.3 × 10−21 and 1.6 × 10−19 m2 s−1 for the dealloying at 253, 298 and 368 K, respectively. The measurement of activation energy demonstrates that the formation and coarsening of NPG are governed by the Au diffusion at alloy/solution interfaces regardless of dealloying media.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 62, Issue 3, February 2010, Pages 137–140
نویسندگان
, , , , , , ,