کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624506 | 989594 | 2016 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact-induced bonding and boundary amorphization of TiN ceramic particles during room temperature vacuum cold spray deposition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Vacuum cold spray (VCS) has been developed as a competent technique for room temperature bulk coating fabrication of solid ceramic particles. Here we report formation and densification mechanisms of VCS TiN ceramic coatings as elucidated by characterizing their microstructures at particle/substrate and particle/particle interfaces. TEM observation reveals apparent fracturing and plastic deformation of TiN particles during impact deposition. The deformation located at the interfacial areas exhibits a dislocation density of ~5Ã1017/m2. Formation of an amorphous layer with the width of 3-4Â nm at the fringes of the ceramic particles is revealed. Impact velocity and high strain rate of TiN particles as determined by numerical computation further indicates the substantial role of the impact-induced plastic deformation in regulating the fabrication of the coatings. The results shed light on efficient room temperature bulk fabrication of ceramic materials with tunable structures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 1, Part B, January 2016, Pages 1640-1647
Journal: Ceramics International - Volume 42, Issue 1, Part B, January 2016, Pages 1640-1647
نویسندگان
Yi Liu, Yuyue Wang, Xinkun Suo, Yongfeng Gong, Chang-jiu Li, Hua Li,