کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7832800 1503513 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Long-term wettability of titanium surfaces by combined femtosecond laser micro/nano structuring and chemical treatments
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Long-term wettability of titanium surfaces by combined femtosecond laser micro/nano structuring and chemical treatments
چکیده انگلیسی
Two types of titanium surfaces covering with TiO2 micro/nanostructures were fabricated by femtosecond laser structuring followed by NaOH hydrothermal or H2O2 oxidation treatments. After exposure to air, the former surface maintained hydrophilic for 10 days and had a minimum contact angle less than 20° even after 50 days, while the latter surface changed to superhydrophobic with a contact angle more than 150° after 50 days. Detailed analysis in terms of morphology, phase transformation and surface chemistry indicated that the changes of wettability behavior were associated with the adsorption of organic compounds from the surrounding atmosphere. The surface prepared by laser and H2O2 oxidation not only had a stronger adsorption ability than the surface prepared by laser and NaOH treatment, but also exhibited a relative higher hydrophobic hydrocarbon tail in the absorbed compounds, which resulted different wettability evolution trend for the two types of titanium surfaces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 459, 30 November 2018, Pages 257-262
نویسندگان
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