The influence of grit blasting and UV/Ozone treatments on Ti-Ti adhesive bonds and their durability after sol-gel and primer application

Journal article (2021)

Authors

L.A. Ardila Rodriguez TU Delft Structural Integrity & Composites
B. Boshuizen TU Delft ChemE/O&O groep
C.D. Rans TU Delft Structural Integrity & Composites
J.A. Poulis TU Delft Adhesion Institute
Research Group
Adhesion Institute (Aerospace Engineering) (TU Delft), Structural Integrity & Composites (Aerospace Engineering) (TU Delft), ChemE/O&O groep (AS) (TU Delft)
Copyright: © 2021 L.A. Ardila Rodriguez, B. Boshuizen, C.D. Rans, J.A. Poulis
DOI
help_outline
https://doi.org/10.1016/j.ijadhadh.2020.102750
Durability Surface treatment Grit-blasting Primers and coupling agents Titanium and alloys UV/Ozone
More Info
expand_more

Published Date

2021

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Source:

International Journal of Adhesion and Adhesives, 104

ISSN:

0143-7496

Faculty

Aerospace Engineering, Applied Sciences

Department

Aerospace Structures & Materials, ChemE/Chemical Engineering

Research Group

Adhesion Institute, Structural Integrity & Composites, ChemE/O&O groep

Abstract

In this study, different surface pretreatments were applied to clean and activate titanium alloy surfaces. The samples were subjected to grit blasting treatments using two different pressures and afterwards, a UV/Ozone treatment was applied at different times to study the wettability and surface oxidation of the titanium samples. Scanning electron microscopy and laser confocal microscopy showed the surface morphology and the increased roughness with grit blasting pressure. X-ray Photoelectron Spectroscopy revealed that titanium was increasingly oxidized with increasing UV/Ozone treatment time, which leads to a reduced contact angle and a better adhesive performance in a butt tension test proving the effectivity of this surface treatment for titanium. Furthermore, the addition of sol-gel AC-120 and corrosion inhibition primer BR 6747 showed to be an additional improvement in the initial adhesion and after different degrees of aging by exposure to salt-spray, making the surface treatment techniques used in this research, a promising environmental friendly alternative to improve adhesive bonding performance.