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Journal article

Ultrasound enhanced plasma surface modification at atmospheric pressure

By Kusano, Yukihiro1,2; Singh, Shailendra Vikram; Norrman, Kion3,4; Drews, Joanna Maria; Leipold, Frank5,6; Rozlosnik, Noemi7; Bardenshtein, A.8; Krebs, N.8

From

Composites Mechanics and Materials Mechanics, Department of Wind Energy, Technical University of Denmark1

Department of Wind Energy, Technical University of Denmark2

Imaging and Structural Analysis, Department of Energy Conversion and Storage, Technical University of Denmark3

Department of Energy Conversion and Storage, Technical University of Denmark4

Department of Physics, Technical University of Denmark5

Plasma Physics and Fusion Energy, Department of Physics, Technical University of Denmark6

Department of Micro- and Nanotechnology, Technical University of Denmark7

FORCE Technology8

Efficiency of atmospheric pressure plasma treatment can be highly enhanced by simultaneous high power ultrasonic irradiation onto the treating surface. It is because ultrasonic waves with a sound pressure level (SPL) above ∼140 dB can reduce the thickness of a boundary gas layer between the plasma and the material surface, and thus, many reactive species generated in the plasma can reach the surface before they are inactivated and can be efficiently utilised for surface modification.

In the present work, glass fibre reinforced polyester plates were treated using a dielectric barrier discharge and a gliding arc at atmospheric pressure to study adhesion improvement. The effect of ultrasonic irradiation with the frequency diapason between 20 and 40 kHz at the SPL of ∼150 dB was investigated.

After the plasma treatment without ultrasonic irradiation, the wettability was significantly improved. The ultrasonic irradiation during the plasma treatment consistently enhanced the treatment efficiency. The principal effect of ultrasonic irradiation can be attributed to enhancing surface oxidation during plasma treatment.

In addition, ultrasonic irradiation can suppress arcing, and the uniformity of the treatment can be improved.

Language: English
Publisher: Taylor & Francis
Year: 2012
Pages: 453-457
ISSN: 17432944 and 02670844
Types: Journal article
DOI: 10.1179/1743294411Y.0000000084
ORCIDs: Norrman, Kion and Leipold, Frank
Keywords

Adhesion Atmospheric pressure plasma Fusionsenergi Plasmaprocessering Polyester Surface treatment Ultrasound

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