کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8024722 | 1517551 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of carbon concentration and argon flow rate on the microstructure and triboperformance of magnetron sputtered WS2/a-C coatings
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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: Effect of carbon concentration and argon flow rate on the microstructure and triboperformance of magnetron sputtered WS2/a-C coatings Effect of carbon concentration and argon flow rate on the microstructure and triboperformance of magnetron sputtered WS2/a-C coatings](/preview/png/8024722.png)
چکیده انگلیسی
WS2/a-C coatings with various carbon contents (0-65Â at.%) were deposited on silicon wafers by magnetron co-sputtering under different Ar flow rates. Increasing the argon flow rate increases the chemical stoichiometric S/W ratio, but the coating gradually becomes porous and columnar-like. The S/W stoichiometry is less influenced by the variation in carbon concentration. TEM and XRD confirm well crystallized basal (002) planes in the sputter deposited pure WS2 or low-carbon WS2/a-C coatings. The hardness of the composite coatings increases with increasing carbon content or decreasing Ar flow rate. The coating at 40Â at.% C exhibits the highest hardness (10.6Â GPa). Tribotests show that, together with a ultralow wear rate of 10â7Â mm3Â mâ1Â Nâ1, the coefficient of friction can be as low as 0.02 in dry air (5% RH) and around 0.15 in moisture (55% RH) and remains stable within a sliding distance of 1000Â m. The wear resistance is strongly affected by the carbon concentration, deposition pressure and the testing atmospheres.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 332, 25 December 2017, Pages 142-152
Journal: Surface and Coatings Technology - Volume 332, 25 December 2017, Pages 142-152
نویسندگان
Huatang Cao, Jeff Th.M. De Hosson, Yutao Pei,