کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
614171 1454807 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of environmental hydrogen atoms on the tribological behaviors of diamond-like carbon films
ترجمه فارسی عنوان
تأثیر اتم های هیدروژن محیطی بر رفتارهای قبیله ای فیلم های کربن الماسی مانند
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
چکیده انگلیسی


• Environmental H atoms can significantly reduce the friction of DLC films.
• At low friction temperatures, the friction is reduced by C atom passivation.
• At high friction temperatures, friction reduction is induced by H atoms diffusion.

Influence of environmental H atoms on the tribological behaviors of DLC films is investigated via molecular dynamics simulations. These H atoms significantly reduce the friction force, and the reduction mechanisms depend on friction temperatures. At low friction temperatures, the H atoms are concentrated near contact interfaces, and their passivations highly reduce the interfacial adhesion, resulting in the low friction force. However, high friction temperatures induce the significant diffusion of the H atoms into the DLC films and thermally expand such films and increase their graphitization, causing a wide region with easy-shear properties to reduce the friction force. It is believed that these mechanisms of friction reduction can improve the understanding of the superlow friction of DLC films in H2 environment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 99, July 2016, Pages 258–266
نویسندگان
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