کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5468405 | 1518935 | 2017 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hard and wear resistant VB2 coatings deposited by pulsed DC magnetron sputtering
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Vanadium boride (VB2) coatings have been less concerned, although they have advantages of super-hardness as well as self-lubrication. In this study, VB2 coatings were deposited by pulsed DC magnetron sputtering, and the effect of deposition parameters on the microstructure, mechanical and tribological properties of coatings were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nano- and micro-indentation, and ball-on-disk tribometer. Under the growth condition with high adatom mobility, the coatings exhibited complete (001) orientation and dense texture. A nanocomposite structure that nanocolumns were separated by a secondary phase was especially observed in the coating deposited at 773 K. Both hardness and intrinsic stress of the coatings were improved substantially by increasing the substrate bias or the pulse frequency. The coating deposited at â30 V and 250 kHz, had the hardness of â¼43.6 GPa and the compressive stress of â¼2.0 GPa. Under the load of 2 N, the friction coefficients were â¼0.7 against Al2O3 counterpart, and the wear rates were in the range of 7 Ã 10â16-8 Ã 10â16 m3/N m. Under the load of 5 N, the coatings with low intrinsic stress showed better wear resistance, with the wear rate of 10â16 m3/N m.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 135, January 2017, Pages 66-72
Journal: Vacuum - Volume 135, January 2017, Pages 66-72
نویسندگان
Fangfang Ge, Chunli Chen, Rui Shu, Fanping Meng, Peng Li, Feng Huang,