Influence of plasma surface treatment on the adhesion of thin films on metals

Petasch, W.; Baumgärtner, K.‐M.; Räuchle, E.; Walker, M.

doi:10.1016/0257-8972(93)90101-s

Cited by 12 publications

(2 citation statements)

References 3 publications

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“…With increasing power from 10 to 80 W, the intensity of the band at 1080 cm -1 (Si-O-Si) growths with respect to that at 1030 cm -1 , indicating variations in the SiO x stoichiometry, with x approaching two 23 . There is a rise of news bands lying at 1354 cm -1 (-CH 2 scissors in Si(CH 2 )Si 24,25 ) and 890 cm -1 (-CH 3 rotation in Si(CH 3 ) 2 ) 10 , indicating further fragmentation of the starting organosilicon monomer with increasing P. Furthermore, bands at 3645 cm -1 (OH stretching) assigned to silanol groups 19 develop in the spectra as P is elevated.…”

Section: Wavenumber (Cm -1 ) Modementioning

confidence: 93%

“…Figure 3 shows the infrared spectra of films deposited using two different oxygen proportions in the plasma feed: 0 and 50%. The wavenumber of the main absorption bands were collected and identified in Table 1, according to other relevant studies 10,11,[19][20][21][22][23][24][25] . The spectra revealed the presence of asymmetric (2950 cm -1 ) and symmetric (2900 cm -1 ) C-H stretching vibrations.…”

Section: Thicknessmentioning

confidence: 99%

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Corrosion resistance of 2024 aluminum alloy coated with plasma deposited a-C:H:Si:O films

et al. 2014

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AA 2024 aluminum alloy is widely employed in aeronautic and automobilist industries. Its hardness and low density are attractive properties for such industrial areas. However, since it contains copper, it undergoes severe corrosion in aggressive media as saline or low Earth orbit environments. In this work, it was investigated the properties of films deposited by PECVD on AA 2024 aluminum alloy as well as the corrosion resistance of the film/substrate systems under different corrosive atmospheres. Films were prepared in a plasma atmosphere composed of 50% of oxygen and 50% of hexamethyldisiloxane resulting in a total gas pressure of 4.0 Pa. Plasma ignition was promoted by the application of radiofrequency signal (13.56 MHz) to the sample holder while grounding the topmost electrode. The plasma excitation power, P, was changed from 10 to 80 W in the six different set of experiments. Film thickness, measured by profilometer, increases by 5 times as P was elevated from 10 to 80 W. As demonstrated by the infrared spectra of the samples, films are essentially organosilicons with preservation of functional groups of the precursor molecule and with creation of different ones. The oxide proportion and the structure crosslinking degree are affected by the plasma excitation power. According to the results obtained by sessile drop technique, hydrophilic to moderately hydrophobic films are produced with changing P from 10 to 80 W. The corrosion resistance, evaluated by salt spray and electrochemical impedance spectroscopy, EIS, experiments, in general increases after film deposition. It is demonstrated that film deposition improves, in up to 36 times, the resistance of the alloy to salt spray attack. It is also shown an improvement of about 240 times in the alloy resistance under NaCl solution by the EIS data. Micrographs acquired by Scanning Electron Microscopy after the corrosion tests furnish further information on the importance of the layer physical stability on its barrier properties. Furthermore, films highly protect the alloy against the oxygen attack. Interpretations are proposed based on the modification of the plasma kinetics with P, altering film structure, composition and properties.

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Section: Wavenumber (Cm -1 ) Modementioning

confidence: 93%

Section: Thicknessmentioning

confidence: 99%

Corrosion resistance of 2024 aluminum alloy coated with plasma deposited a-C:H:Si:O films

et al. 2014

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Surface tailoring of an ethylene propylene diene elastomeric terpolymer via plasma‐polymerized coating of tetramethyldisiloxane

Tran¹,

Choudhury²,

Dutta³

2004

Polymer International

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In the research presented here, we explore the use of a low‐energy plasma to deposit thin silicone polymer films using tetramethyldisiloxane (TMDSO) (H(CH3)2SiOSi(CH3)2H) on the surface of an ethylene propylene diene elastomeric terpolymer (EPDM) in order to enhance the surface hydrophobicity, lower the surface energy and improve the degradation/wear characteristics. The processing conditions were varied over a wide range of treatment times and discharge powers to control the physical characteristics, thickness, morphology and chemical structure of the plasma polymer films. Scanning electron microscopy (SEM) shows that pore‐free homogeneous plasma polymer thin films of granular microstructure composed of small grains are formed and that the morphology of the granular structure depends on the plasma processing conditions, such as plasma power and time of deposition. The thicknesses of the coatings were determined using SEM, which confirmed that the thicknesses of the deposited plasma‐polymer films could be precisely controlled by the plasma parameters. The kinetics of plasma‐polymer film deposition were also evaluated. Contact angle measurements of different solvent droplets on the coatings were used to calculate the surface energies of the coatings. These coatings appeared to be hydrophobic and had low surface energies. X‐ray photoelectron spectroscopy (XPS) and photoacoustic Fourier‐transform infrared (PA‐FT‐IR) spectroscopy were used to investigate the detailed chemical structures of the deposited films. The optimum plasma processing conditions to achieve the desired thin plasma polymer coatings are discussed in the light of the chemistry that takes place at the interfaces. Copyright © 2004 Society of Chemical Industry

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Improvement of the adhesion of low-energy polymers by a short-time plasma treatment

Petasch

Räuchle

Walker

et al. 1995

Surface and Coatings Technology

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Influence of plasma surface treatment on the adhesion of thin films on metals

Cited by 12 publications

References 3 publications

Corrosion resistance of 2024 aluminum alloy coated with plasma deposited a-C:H:Si:O films

Corrosion resistance of 2024 aluminum alloy coated with plasma deposited a-C:H:Si:O films

Surface tailoring of an ethylene propylene diene elastomeric terpolymer via plasma‐polymerized coating of tetramethyldisiloxane

Improvement of the adhesion of low-energy polymers by a short-time plasma treatment

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