DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Role of surface structures on long term stability of adhesive joints between Ti-15V-3Cr-3Sn-3Al and polyether-ether-ketone

Löbbecke, Miriam and Bayerbasi, Tolga Johannes and Bartsch, Marion and Haubrich, Jan (2023) Role of surface structures on long term stability of adhesive joints between Ti-15V-3Cr-3Sn-3Al and polyether-ether-ketone. International Journal of Adhesion and Adhesives. Elsevier. doi: 10.1016/j.ijadhadh.2022.103282. ISSN 0143-7496.

[img] PDF - Only accessible within DLR until February 2025 - Postprint version (accepted manuscript)

Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0143749622001981


Adhesive bonding of similar and dissimilar materials is a key enabler for lightweight design in the automobile as well as aerospace industries. The strength and durability of adhesive metal-polymer joints in humid atmospheres depends strongly on surface pretreatments. Different pretreatments of Ti-15V-3Cr-3Sn-3Al (Ti15-3) for joining to polyether-ether-ketone (PEEK) were investigated in order to optimize the joint properties and elucidate underlying bonding mechanisms. Micro- and nanostructured surfaces were created with laser and chemical pretreatments and characterized with microscopy and X-ray photoelectron spectroscopy (XPS). The mechanical performance of the joints was analyzed with single lap shear tests in both the initial condition and after hydrothermal aging. Without significant structuring only physico-chemical interactions were present that accounted for strengths of up to 45 MPa. In the presence of micro- or nanostructures that add interlocking possibilities to the bonding, a maximum strength of 74 MPa was obtained. Hydrothermal aging resulted in poor residual strengths for samples without structuring, showing that humidity strongly degraded physico-chemical bonding. High aging resistance was particularly reached for laser pretreated specimens with an open-porous nanostructure. By comparing the different surfaces, it was found that (i) nanostructuring has a bigger impact on the aging resistance than microstructuring, and (ii) aging can be assigned mainly to weakening of physico-chemical bonding. Therefore, it can be deduced that nanomechanical interlocking is a key for producing long-term stable Ti15-3/PEEK joints.

Item URL in elib:https://elib.dlr.de/189590/
Document Type:Article
Title:Role of surface structures on long term stability of adhesive joints between Ti-15V-3Cr-3Sn-3Al and polyether-ether-ketone
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Löbbecke, MiriamUNSPECIFIEDhttps://orcid.org/0000-0001-7838-6204UNSPECIFIED
Bayerbasi, Tolga JohannesInstitut für Werkstoff-Forschung/Hochschule AachenUNSPECIFIEDUNSPECIFIED
Haubrich, JanUNSPECIFIEDhttps://orcid.org/0000-0002-5748-2755UNSPECIFIED
Date:January 2023
Journal or Publication Title:International Journal of Adhesion and Adhesives
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:surface treatment, surface roughness/morphology, hybrid joints, aging, bonding mechanisms
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Structural Materials and Design
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Metallic Structures and Hybrid Material Systems
Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Löbbecke, Miriam
Deposited On:16 Jan 2023 09:04
Last Modified:16 Jan 2023 09:04

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.