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Wettability Enhancement of Aluminum Alloys via Plasma Arc Discharge

[+] Author Affiliations
Mehdi Asgharifar, Joshua Abramovitch, Fanrong Kong, Radovan Kovacevic

Southern Methodist University/RCAM, Dallas, TX

Blair Carlson

GM Global R&D, Warren, MI

Paper No. MSEC2012-7331, pp. 449-455; 7 pages
  • ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing
  • ASME 2012 International Manufacturing Science and Engineering Conference
  • Notre Dame, Indiana, USA, June 4–8, 2012
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5499-0
  • Copyright © 2012 by ASME and General Motors


The aim of this study is to determine the wettability-enhancing effects of an atmospheric-pressure, direct current (DC) plasma arc discharge on aluminum alloys. Wettability is a critical factor in engineering applications such as biomedical implants, painting, and adhesive bonding. For example, in the realm of adhesive bonding, greater wettability improves a metal substrate’s attraction to an adhesive material, which results in higher bond quality. In this study, the contact angle is determined and compared as a measure of the wettability using two different techniques, the sessile drop and ballistic deposition methods, with water as a test liquid. Additionally, this paper analyzes the impact of different arc discharge parameters, including arc current and plasma torch velocity, on the wettability.

Copyright © 2012 by ASME and General Motors



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