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Title:Atmosperic microwave plasma treatment on oil-contaminated aluminum surface
Author(s):Zhu, Weikun
Contributor(s):Ruzic, David N.
Subject(s):Atmospheric plasma
microwave plasma
aluminum alloy surface treatment
Abstract:An atmospheric microwave plasma was used to clean and activate oil-contaminated Al surfaces. Treatment was done on a large-area basis by moving the desired sample over an atmospheric pressure plasma torch. The cleaning effectiveness is supported by contact angle measurements, ATR-FTIR, SEM, XPS, and a water-break free test. In addition, the effect of processing parameters on the result of surface cleaning and activation was studied. An enhancement of surface hydrophilicity was observed as a result of increasing input microwave power and plasma exposure time. The effect of surface temperature on plasma treatment was investigated through comparing water contact angles of two methods of plasma treatment with identical exposure time, power, and gas composition. Moreover, spatially resolved ATR-FTIR spectrums from partially cleaned surfaces reveal the extent of oxidation across the plasma treated area.
Issue Date:2018-05
Sponsor:Strategic Environmental Research and Development Program (SERDP); project number: WP-2742
Date Available in IDEALS:2018-05-30

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