کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9812746 1518119 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Deformation and fracture of Ti-Si-N nanocomposite films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Deformation and fracture of Ti-Si-N nanocomposite films
چکیده انگلیسی
The deformation and fracture of Ti-Six-N coatings of varying Si content were examined by cross-sectional transmission microscopy. Cross-sections were prepared through both undeformed coatings and coatings which had previously been indented using a 5 μm radius spherically tipped diamond indenter. Samples with low silicon contents (0.8 and 1.5 at.%Si) had a columnar grain structure which deformed by intergranular cracking and shear sliding at the grain boundaries. Samples with higher silicon contents (9.5 and 12.5 at.%Si) consisted of TiN nanocrystals ∼5 nm in size connected by an amorphous Si3N4 phase. These coatings contained a limited amount of intergranular cracking. The nanocrystalline coatings are thought to undergo quasi-plastic deformation behaviour via cracking on a nanometer scale, where the crack size is of the order of the grain size.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 479, Issues 1–2, 23 May 2005, Pages 193-200
نویسندگان
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