Surface cleaning and corrosion protection using plasma technology

Abstract

Nowadays plasma techniques are getting more and more involved in production technologies because the traditional chemical treatments are sometimes less feasible and/or environmentally harmful. Besides the plasma pre-treatments, the plasma technology can also be utilized to develop thin protective layers. Day by day new techniques come into sight, so the categorization and review of them is an important task, which was the primary aim in this paper by trying to make an account on the most up-to-date ones. In this way, some important characteristic features and major advantages are presented here for the plasma treatment of plastic surfaces under ambient atmosphere, ultrafine surface cleaning with low-pressure plasma sources, and an example for the RF-PACVD deposition of protective and highly corrosion resistant thin glassy layers by plasma polymerization of HMDSO precursors. Envisaged future utilization of a small-scale atmospheric pressure plasma (APP) jet system installed in the Laboratory of Surface Techniques at University of Miskolc is also discussed.

Effect of the plasma excitation power on the properties of SiOxCyHz films deposited on AISI 304 steel

“…More specifically, many studies [9][10][11] have been devoted to the development of alternative techniques for reducing or preventing the corrosion process of metallic surfaces. Amongst the extant plasma deposition studies, however, most are focused on the protection of iron [12,13], magnesium [14], bell metal [15] and aluminum [16,17], materials which present lower corrosion resistance than stainless steel.…”

Application of Pecvd in the Conservation of Metallic Cultural Heritage: A Review

“…also called "cold plasma" or "near ambient temperature plasma" in which electron temperature is much greater than ion or neutral gas temperature (Te >> Ti = Tn) [35] This kind of plasma includes direct current (DC) plasma, [capacitive coupled radio frequency plasma (CCP-RF),pulsed plasma, and audio frequency plasmas [11].…”

“…It attracted the attention of cultural heritage restoration mainly because of its low temperature [9,10]. Plasma technology can also be used to develop thin protective layers [11]. In the last twenty years, scientists from various fields have turned their attention to the application of unconventional cleaning methods to metal artifacts.…”

“…The so-called cold high frequency plasma has come to be considered as a viable, non-destructive, and ecological method [12]. The principal applications of plasma treat-ments concern the processes that lead to a selected, limited transformation of the outer surface layer (nanometric scale) [11]. Since 1979, cold plasma has been investigated in the field of conservation and restoration as a method to clean and disinfect cultural and historical objects without making them more fragile.…”

Surface analysis of nitrogen plasma-treated C60/PS nanocomposite films for antibacterial activity

“…The incorporation of O 2 and N 2 functionalities on the sample surfaces is an indication of surface activation by N 2 plasma and the formation of free radical sights on the nanocomposite film's surfaces. The activated surface either adsorbs moisture from ambient air just after removing it from the plasma chamber or abstracts residual O 2 in the plasma chamber [31,32]. The appearance of imine, hydroxyl, and C-N functionalities on the examined samples is the main reason for wetting enhancement.…”