کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1661718 1517695 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of the dislocation emergence on the mechanical behavior of coated materials: Elastic energy relaxation or adhesion modification
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Effect of the dislocation emergence on the mechanical behavior of coated materials: Elastic energy relaxation or adhesion modification
چکیده انگلیسی

Nickel thin films of various thicknesses deposited on lithium fluoride single crystals have been strained to study the effect of steps on the buckling phenomenon. In these experiments, the nanometer-scale steps result from the emergence process of dislocations coming from the substrate and piling-up at the film/substrate interface. The coated specimens were investigated by in situ atomic force microscopy. It is shown that the buckling phenomenon preferentially occurs just above the step structures in compression tests, while no buckling takes place in tension. From elastic energy consideration, it is concluded that the main effect of substrate plasticity is to strongly modify the critical stress for buckling, with no significant result on the adhesion properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 202, Issues 4–7, 15 December 2007, Pages 1094–1097
نویسندگان
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