کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1659752 | 1517685 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanical and tribological properties of multicomponent Ti-B-C-N thin films with varied C contents
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Mechanical and tribological properties of multicomponent Ti-B-C-N thin films with varied C contents Mechanical and tribological properties of multicomponent Ti-B-C-N thin films with varied C contents](/preview/png/1659752.png)
چکیده انگلیسی
Multicomponent thin films of Ti-B-C-N with different C contents (C target current ranging from 0.0 to 4.0 A) were deposited onto unheated Si(100) wafers (for mechanical analyses) and M42 tool steels (for tribological measurements) by reactive close-field unbalanced dc-magnetron sputtering in an Ar-N2 gas mixture. These films were characterized and analyzed in terms of their microstructure by X-ray diffraction, their hardness by microindentation measurements, their surface root-mean-square roughness by atomic force microscopy, and their friction and wear behaviors by Rockwell-C testing, microscratch testing, dynamic impact testing and pin-on-disc tribometer. It was found that the mechanical and tribological properties of multicomponent films (typically 1.6 ± 0.2 μm in thickness) were closely related to the C content (varied from 4.4 at.% to 42.0 at.%). For the best multicomponent film with 12.4 at.% C content, a high hardness of 27 GPa was achieved and the best cohesive and adhesive strength was evidenced in terms of critical load values of LC1 (~ 37 N), LC2 (>75 N), and the highest adhesive strength (HF1). Moreover, by dynamic impact testing the multicomponent film could endure impact cycles up to 2 Ã 105 without adhesive failure. However, when the C content was further increased up to 42.0 at.%, the hardness, cohesive and adhesive strength were decreased due to the formation of amorphous structure. It was also found that the pin-on-disc test under dry conditions showed that the frictional coefficients decreased with C content. The frictional coefficients obtained at a load of 2 N were kept at â¼0.57 without C incorporation and decreased to ~0.18 at C current of 4.0 A. The tribological properties of the Ti-B-C-N films with different C contents are also explained in terms of mechanical properties and wear mechanisms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 204, Issues 9â10, 25 January 2010, Pages 1528-1534
Journal: Surface and Coatings Technology - Volume 204, Issues 9â10, 25 January 2010, Pages 1528-1534
نویسندگان
A. Vyas, Y.H. Lu, Y.G. Shen,