Different Ways to Plasma‐Polymerize HMDSO in DBD Configuration at Atmospheric Pressure for Corrosion Protection

Abstract

Organosilicon layers were deposited on galvanized steel to give a protective coating against corrosion. HMDSO was atomized and injected into a DBD plasma at atmospheric pressure. Plasma‐polymerized HMDSO layers were different when HMDSO nanodroplets reacted directly in the plasma area or when such droplets reacted with the plasma once deposited on the surface. Addition of a plasma curing step was also studied. Influence of the deposition method on the properties of ppHMDSO layers was also studied. Layer structure was measured by SEM and interferometry, and its chemical structure was analyzed by FTIR and XPS. Corrosion resistance, which was measured by electrochemistry, was significantly increased when a plasma curing step was performed.

Adhesion Improvement between Epoxy and Stainless Steel Using a Silane Coupling Agent in an Atmospheric Plasma Process

“…[ 46] The two high voltage (HV) electrodes consist of metallic plates of 9 cm  34 cm each. The substrates were fixed on the bottom grounded electrode.…”

Unraveling the architecture of plasma polymers by electrospray tandem mass spectrometry

“…As 321 previously mentioned, such k C(trimethylsilyl, trimethylsiloxy) oligomers were not produced 322 upon ethanolysis of the ppHMDSO network since they do not carry any terminal moieties 323 specifically expected from this chemical treatment. Instead, they most resembled to species 324 found in solvent extracts of plasma polymers made from silicon precursors [9,33]. Since the 325 plasma polymerized samples were carefully washed prior to ethanolysis, in order to eliminate 326 any extractable or adsorbed species, detection of k C(trimethylsilyl, trimethylsiloxy) species in the 327 ethanolysis medium implied that these oligomers were initially embedded in the solid film and 328 released as intact species upon disruption of the PDMS network.…”

“…As a result, plasma polymers are 49 composed of short randomly branched chains with a high degree of cross-linking [8,9], hence 50 poorly soluble. Because they exhibit a much more complex structure than macromolecules 51 synthesized by conventional polymerization methods, detailed characterization of plasma 52 polymers still remains an analytical challenge.…”

High-rate HMDSO-based coatings in open air using atmospheric-pressure plasma jet

“…Several types of AP plasma sources, including dielectric barrier discharges, radio frequency glow discharges and AP plasma jets, have successfully been used to fabricate Si-related coatings [13][14][15][16][17][18][19][20][21][22][23][24]. In particular, AP plasma jet is a simple plasma source that is usable in open air conditions, the plasma of which can be generated with argon (Ar), and thus, it is one of the most promising techniques for Si-related coatings in a less expensive, more flexible and continuous manner of treatment.…”

“…Recently, organic and inorganic silicon (Si)-related coatings, such as carbon-containing silicon oxide (SiOC) and SiO 2 -like films, at low temperatures using AP plasma have drawn much interest in advanced industries for use in many applications, such as scratch-resistant and anti-reflection coatings [3][4][5][6][7][8][9], food and pharmaceutical packaging [10][11][12], and corrosion protection [13,14]. Several types of AP plasma sources, including dielectric barrier discharges, radio frequency glow discharges and AP plasma jets, have successfully been used to fabricate Si-related coatings [13][14][15][16][17][18][19][20][21][22][23][24].…”