کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1484615 | 991638 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface structure and properties of NiZr model metallic glasses: A molecular dynamics simulation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Surface structure and properties of NiZr model metallic glasses: A molecular dynamics simulation Surface structure and properties of NiZr model metallic glasses: A molecular dynamics simulation](/preview/png/1484615.png)
چکیده انگلیسی
A systematic study of the surface structure and properties of NiZr model metallic glasses is reported using atomistic simulations. It is found that at low temperatures below the glass transition temperatures, the surface retains the amorphous structure and the surface energy γ is significantly lower (∼50%) than that of the corresponding crystalline alloy constituents. The variation of alloy concentration has little effect on γ; but increase in cooling rate and annealing temperature can lead to large decrease in γ. At elevated temperatures, γ increases with temperature and surface melting occurs at a temperature about 30% below Tg. At all temperatures up to Tg, the surface remains atomically smooth.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 354, Issue 18, 15 April 2008, Pages 2060–2065
Journal: Journal of Non-Crystalline Solids - Volume 354, Issue 18, 15 April 2008, Pages 2060–2065
نویسندگان
Qi-Kai Li, Mo Li,