کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1661440 1008425 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Epitaxial growth and mechanical properties of (001) ZrN/W nanolaminates
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Epitaxial growth and mechanical properties of (001) ZrN/W nanolaminates
چکیده انگلیسی
Epitaxial growth of ZrN/W multilayers with bilayer periods Λ ranging from 2.5 to 50 nm has been achieved at 300 °C on MgO (001) substrates by means of dual ion beam sputtering, which is a novelty compared to polycrystalline growth reported so far in this system. X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM) experiments reveal the following epitaxial relationship [110] (001) W // [100] (001) ZrN // [100] (001) MgO. Nanoindentation tests indicate a hardness increase proportional to Λ− 0.54, with maximum of 25.8 GPa at Λ = 2.5 nm. However, there is no hardness enhancement relative to rule-of-mixtures value, which could be ascribed to delamination at the W on ZrN interfaces, as observed by TEM and related to large compressive stress, as determined by XRD. Another explanation could be related to the small difference in shear modulus between the two materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 202, Issue 15, 25 April 2008, Pages 3683-3687
نویسندگان
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