Influence of Chemical Precleaning on the Plasma Treatment Efficiency of Aluminum by RF Plasma Pencil

Vadym PRYSIAZHNYI; Pavel SLAVICEK; Eliska MIKMEKOVA; Milos KLIMA

doi:10.1088/1009-0630/18/4/17

Plasma Science and Technology > 2016 > 18(4): 430-437. > DOI: 10.1088/1009-0630/18/4/17

Vadym PRYSIAZHNYI, Pavel SLAVICEK, Eliska MIKMEKOVA, Milos KLIMA. Influence of Chemical Precleaning on the Plasma Treatment Efficiency of Aluminum by RF Plasma Pencil[J]. Plasma Science and Technology, 2016, 18(4): 430-437. DOI: 10.1088/1009-0630/18/4/17

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Influence of Chemical Precleaning on the Plasma Treatment Efficiency of Aluminum by RF Plasma Pencil

1Masaryk University, Faculty of Science, Kotl′arsk′a 2, 61137 Brno, Czech Republic 2Institute of Scienti?c Instruments of the ASCR, v.v.i., Kr′alovopolsk′a 147, 612 64 Brno, Czech Republic

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Received Date: January 22, 2015

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Abstract

Abstract

This paper is aimed to show the influence of initial chemical pretreatment prior to subsequent plasma activation of aluminum surfaces. The results of our study showed that the state of the topmost surface layer (i.e. the surface morphology and chemical groups) of plasma modified aluminum significantly depends on the chemical precleaning. Commonly used chemicals (isopropanol, trichlorethane, solution of NaOH in deionized water) were used as precleaning agents. The plasma treatments were done using a radio frequency driven atmospheric pressure plasma pencil developed at Masaryk University, which operates in Ar, Ar/O₂ gas mixtures. The effectiveness of the plasma treatment was estimated by the wettability measurements, showing high wettability improvement already after 0.3 s treatment. The effects of surface cleaning (hydrocarbon removal), surface oxidation and activation (generation of OH groups) were estimated using infrared spectroscopy. The changes in the surface morphology were measured using scanning electron microscopy. Optical emission spectroscopy measurements in the near-to-surface region with temperature calculations showed that plasma itself depends on the sample precleaning procedure.
- atmospheric pressure plasma,
- plasma jet,
- aluminum,
- surface treatment,
- surface processing,
- chemical precleaning

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References

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