کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9679575 1455084 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of crystallographic orientation on the friction and wear properties of MoxSy-Ti coatings by pulsed-dc in nitrogen and humid air
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Effect of crystallographic orientation on the friction and wear properties of MoxSy-Ti coatings by pulsed-dc in nitrogen and humid air
چکیده انگلیسی
This work reports on the structural and wear properties of MoxSy-Ti films, deposited on D2, 52100, and 440C steel substrates by pulsed-dc magnetron sputtering. A closed field unbalanced magnetron sputter ion plating system was used for the deposition process. The mechanical and tribological properties of MoxSy-Ti coated composites onto selected steel substrates were characterized using microhardness test, friction-wear test in atmospheric conditions and in dry nitrogen. The X-ray diffraction (XRD) was used to determine the phase structure. Structural analysis was performed using SEM-EDS. MoxSy-Ti films showed a very dense structure with pronounced basal plane (0 0 2) orientation, which showed the lowest friction coefficient (0.022) in dry nitrogen. The coefficient of friction can be attributed to the oxidation of MoS2 at the wear track to form MoOx that is known to cause an increase in the friction coefficient. In humid air, an oxidative environment, the films had higher coefficient of friction (0.07), and lower wear life (142 500 passes with 2.11 × 10−6 mm3/N m wear rate) than in dry nitrogen, where the wear life was over 250 000 passes with the lowest wear rate of 3 × 10−8 mm3/N m.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 258, Issues 5–6, February 2005, Pages 852-860
نویسندگان
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