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Surface and Coatings Technology, Volume 206, Issues 11–12, 15 February 2012, Pages 3011-3016
V. Prysiazhnyi, P. Vasina, N.R. Panyala, J. Havel, M. Cernak
Masaryk University, Faculty of Science, Department of Physical Electronics, Kotlařska 2, 61137 Brno, Czech Republic
R&D Center for Low-cost Plasma and Nanotechnology Surface Modifications, Masaryk University, Kotlařska 2, 611 37 Brno, Czech Republic
Masaryk University, Faculty of Science, Department of Chemistry, Kamenice 5/A14, 625 00 Brno, Czech Republic
Comenius University, Faculty of Mathematics, Physics and Informatics, Bratislava, Slovakia
Abstract
The ambient air plasma cleaning and activation effects on aluminum surface using the Diffuse Coplanar Surface Barrier Discharge in ambient air are presented. Atomic Force Microscopy, Attenuated Total Reflectance FTIR and Laser Desorption/Ionization Time-of-Flight Mass Spectroscopy techniques were used to characterize the changes on the surface before and after plasma treatments. The plasma cleaning effect on aluminum, i.e. decrease of hydrocarbon contamination, was proven. Also the air plasma treatment resulted in a significant increase of amount of OH groups on the surface and in a decrease of the surface roughness.
Additional Information
The effects of atmospheric pressure air plasma treatment of aluminium surface were reported. Specific type of surface dielectric barrier discharge plasma source was used, the so-called Diffuse Coplanar Surface Barrier Discharge (DCSBD). It was developed by research group of prof. Mirko Cernak. This plasma source has advantages in energy efficiency and gentle treatment of large flat surfaces. Our study of the aluminum shows that application of the plasma leads to efficient surface cleaning and activation. The plasma cleaning (i. e. removal of hydrocarbon contaminants) was proven by infrared spectroscopy and laser desorption/ionization mass spectroscopy. Plasma activation was done by incorporating the OH groups onto the surface based on the results obtained using laser desorption/ionization mass spectroscopy. Also it was shown that application of DCDBD plasma source leads to decrease of the surface roughness (measured by atomic force microscopy).
