کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1498807 993280 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Emergence of film-thickness- and grain-size-dependent elastic properties in nanocrystalline thin films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Emergence of film-thickness- and grain-size-dependent elastic properties in nanocrystalline thin films
چکیده انگلیسی

Molecular dynamics simulations of nanocrystalline Ni revealed that the in-plane Young’s modulus of 2.2 nm grained Ni film with ∼10 grains across its thickness was only 0.64% smaller than that of bulk, while it dropped to 24.1% below bulk value for ∼1 grain across film. This size dependence arises from the increased number of more compliant grains adjacent to the free surface. Simulations of nanocrystalline diamond revealed that the anharmonicity of the potential curve determined the sensitivity of the Young’s modulus to variations in the sample size.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 68, Issue 5, March 2013, Pages 261–264
نویسندگان
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