کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5360975 1503647 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison of interface mechanics characteristics of DLC coating deposited on bearing steel and ceramics
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Comparison of interface mechanics characteristics of DLC coating deposited on bearing steel and ceramics
چکیده انگلیسی
The load response of a coating and substrate system was built using interface mechanics theory. The characteristics of interface mechanics of diamond-like carbon (DLC) coatings deposited on bearing steel (M50) and ceramics (silicon nitride, Si3N4) were calculated, where the results showed that Si3N4 substrate could bear greater stresses along the interface than M50 under similar surface load and DLC coating conditions. Since the elastic modulus of ceramics is greater than that of the steel's, when a thicker coating is deposited, there will be a greater increase of interface normal stress for ceramics than for steel, as well as a greater elastic modulus of coatings meaning a greater interface normal stress. The interface transverse stress can be small when the difference of elastic modulus between coating and substrate is minor, meaning a better match. From the scratch test results, the interface bonding capacity of DLC coating with Si3N4 and M50 substrate were verified.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 317, 30 October 2014, Pages 188-197
نویسندگان
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