کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1659982 1517691 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vapor deposition and characterization of nanocrystalline nanolaminates
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Vapor deposition and characterization of nanocrystalline nanolaminates
چکیده انگلیسی

Nanolaminates can be: one-dimensional, i.e. an artificial crystal with a composition modulation of amorphous layers; two-dimensional with one component layer crystalline; or three-dimensional wherein all the layers are nanocrystalline. The nanocrystalline nanolaminate can be synthesized through physical vapor deposition methods. Structural characterization includes diffraction from, and imaging of, atomic structure that reveals crystalline phase and lattice distortions. The mechanical properties are dependent upon the specific nanostructural arrangements of atoms at the grain boundaries and within the constituent layers. The deformation behavior of nanocrystalline nanolaminates are shown to be dependent upon dislocation structure, grain boundary, and interlayer distortion effects. Mechanical properties to be reviewed are tensile behavior, and surface nanohardness with accompanying structural characterization through X-ray diffraction and high resolution electron microscopy. The role of layer pair spacing and grain size are now evaluated as measured by tensile strength and surface hardness. It is found that the onset of plastic deformation is most influenced by grain size as compared with layer spacing.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 203, Issues 5–7, 25 December 2008, Pages 484–489
نویسندگان
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