کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8029258 | 1517643 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of topography on plasma treated titanium surface wettability
ترجمه فارسی عنوان
تأثیر توپوگرافی بر روی سطح پذیرش سطح تیتانیوم در پلاسما
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
With the aim of studying the topographic influence on wettability of plasma-treated surfaces, we used eighteen commercially pure titanium (CP Titanium) disks (grade II), 10Â mm in diameter and 1Â mm thick, and in atmospheres of Argon (Ar), Hydrogen H2 and Ar-H2. These samples were submitted to plasma produced by hollow cathode discharge (HCD) for 20 and 60Â min at a voltage of 500Â V and pressure of 220Â Pa. After pre-treatment, the state of the sample surfaces was assessed for surface phases with grazing incidence X-ray diffraction (GIXRD), and XPS (X-ray photoelectron spectroscopy), evaluated by atomic force microscopy (AFM) and wettability, using the sessile drop test. It was found that all the conditions were effective in reducing oxide, resulting in different wettability values. Correlation between average roughness (Ra) parameters and the ratio between maximum peak height and average distance between the highest peak and lowest valley (Rp/Rz) and wettability for the different treatment conditions were analyzed. Given the results obtained, it was concluded that Ra and Rp/Rz are not appropriate for correlating with wettability and it is suggested that a new topographic parameter be adopted for the Cassie-Baxter equation. XPS analysis showed that reduction efficacy was greater for the Ar-H2 mixture, followed by Ar and H2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 235, 25 November 2013, Pages 447-453
Journal: Surface and Coatings Technology - Volume 235, 25 November 2013, Pages 447-453
نویسندگان
M.A.M. da Silva, C.L. B. Guerra Neto, A. Nunes Filho, D.O. Freitas, D.C. Braz, C. Jr.,