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  Which properties must a surface have to be suitable for cold pressure welding?

Tran, T. H., Gerlitzky, C., Rohwerder, M., & Groche, P. (2019). Which properties must a surface have to be suitable for cold pressure welding? AIP Conference Proceedings, 2113: 050019. doi:10.1063/1.5112583.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-6BBC-F Version Permalink: http://hdl.handle.net/21.11116/0000-0006-6BC1-8
Genre: Conference Paper

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 Creators:
Tran, The Hai1, Author              
Gerlitzky, Christiane2, Author              
Rohwerder, Michael1, Author              
Groche, Peter2, Author              
Affiliations:
1Corrosion, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_2074315              
2Technische Universität Darmstadt, Institute for Production Engineering and Forming Machines, 64287 Darmstadt, Germany, ou_persistent22              

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 Abstract: Cold pressure welding is a very promising welding technology, as different materials can be joined without thermally induced formation of brittle intermetallic phases in the bond zone. During an extrusion process local contact conditions allow for the formation of a strong metallurgical joint. Special surface preparations can enhance this formation of metallic bonds to result in high overall component strengths. So far, for the material combination of steel and aluminum cleaning of the surfaces by scratch brushing has been found to be beneficial for the bond formation. In this paper, the relevant surface conditions such as the amount of surface contamination and oxide layer thickness are analyzed by means of X-ray photoelectron spectroscopy (XPS). Since plasma treatments are known to influence these parameters, joining of polished samples (reference) and samples after an argon plasma treatment (physical removal of contamination) as well as oxygen plasma treatment (chemical removal) is investigated. The resulting joined samples are micro tensile tested to measure the local bond strength. It was found that the surface contamination was significantly reduced by the plasma treatment and the bond strength increased. Due to the fact that the surface tension is influenced as well, the resulting tensions were further analyzed to take the effect of the adhesion energies into account by the Owens, Wendt, Rabel und Kaelble (OWKR) method. © 2019 Author(s).

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Language(s): eng - English
 Dates: 2019-07-022019
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1063/1.5112583
 Degree: -

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Title: 22nd International Conference on Material Forming (ESAFORM 2019)
Place of Event: Mondragon Unibrtsitatae, Spain
Start-/End Date: 2019-05-08 - 2019-05-10

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Title: AIP Conference Proceedings
  Abbreviation : AIP Conf. Proc.
Source Genre: Journal
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Publ. Info: Melville, NY : AIP Publishing
Pages: - Volume / Issue: 2113 Sequence Number: 050019 Start / End Page: - Identifier: ISSN: 0094-243X
CoNE: https://pure.mpg.de/cone/journals/resource/954928528968