Publisher DOI: 10.1002/sia.5816
Title: XPS analysis of the interface between AA2024-T3/CF-PPS friction spot joints
Language: English
Authors: Goushegir, Seyed Mohammad 
Scharnagl, Nico 
dos Santos, Jorge F. 
Amancio, Sergio 
Keywords: aluminum;composite;friction spot joining;hybrid joints;interface;XPS
Issue Date: 2-Sep-2015
Publisher: Wiley
Source: Surface and Interface Analysis 8 (48): 706-711 (2016-08-01)
Journal or Series Name: Surface and interface analysis 
Abstract (english): Friction spot joining (FSpJ) is an advanced, alternative technology suitable for joining metal-composite overlap structures. In this paper, the principles of the FSpJ technique are briefly described. Furthermore, the influence of aluminum surface pretreatments (conversion coating and phosphoric acid anodizing) on the adhesion between aluminum alloy AA2024-T3 and carbon-fiber-reinforced poly(phenylene sulfide) (CF-PPS) friction spot joints was examined. X-ray photoelectron spectroscopy (XPS) was used to investigate the changes in the chemical composition of the aluminum after surface pretreatments, as well as chemical bond formation at the interface between the aluminum and composite. The joints were mechanically loaded until failure, and the fracture surface of the joints were analyzed on the aluminum side. XPS results showed evidence of Al–C and Zr–C bond formation at the interface for the selected surface pretreatments in the course of the joining cycle. Chemical bond formation was confirmed through the analysis of C1s and Al2p regions in which the appearance of new peaks with different binding energies compared with the aluminum and composite were identified. Copyright © 2015 John Wiley & Sons, Ltd.
URI: http://hdl.handle.net/11420/6156
ISSN: 1096-9918
Institute: Kunststoffe und Verbundwerkstoffe M-11 
Type: (wissenschaftlicher) Artikel
Funded by: Financial support of the Helmholtz Association through the Young Investigator Group, Advanced Polymer‐Metal Hybrid Structures (grant no. VH‐NG‐626).
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