کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9679477 1455081 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Friction properties of surface-fluorinated carbon nanotubes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Friction properties of surface-fluorinated carbon nanotubes
چکیده انگلیسی
Surface modification of the tubular or sphere-shaped carbon nanoparticles through chemical treatment, e.g., fluorination, is expected to significantly affect their friction properties. In this study, a direct fluorination of the graphene-built tubular (single-walled carbon nanotubes) structures has been carried out to obtain a series of fluorinated nanotubes (fluoronanotubes) with variable CnF (n = 2-20) stoichiometries. The friction coefficients for fluoronanotubes, as well as pristine and chemically cut nanotubes, were found to reach values as low as 0.002-0.07, according to evaluation tests run in contact with sapphire in air of about 40% relative humidity on a ball-on-disk tribometer which provided an unidirectional sliding friction motion. These preliminary results demonstrate ultra-low friction properties and show a promise in applications of surface modified nanocarbons as a solid lubricant.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 259, Issues 1–6, July–August 2005, Pages 738-743
نویسندگان
, , , , , , , ,