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Laser treatments of titanium surfaces In different atmospheres for Improved adhesion properties

Haubrich, Jan und Schulze, Karola und Hausmann, Joachim (2014) Laser treatments of titanium surfaces In different atmospheres for Improved adhesion properties. Euro Hybrid Materials and Structures 2014, 2014-04-10 - 2014-04-11, Stade.

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Kurzfassung

We present a first study on the effects of the ambient gases of a laser pre-treatment on the interface and bond strength to a thermoplastic polymer, polyetheretherketone (PEEK). The pretreatments of titanium TiAl3V2.5 surfaces were performed with a pulsed Nd:YAG laser in air, oxygen, nitrogen and argon. SEM investigations showed macro-structuring at the micron scale and superimposed fine nanostructuring. We characterized the initial and residual bond strengths by means of single-lap shear experiments prior and after degradation for 7 days in 80°C hot H2O, respectively. The initial strengths of the surfaces laser treated in air, oxygen and nitrogen were comparable at around 77 MPa, whereas for samples pretreated in Argon slightly lower strengths of 676 MPa were obtained. After degradation, the absolute strength loss varied from 11% (air) to 24% (Ar). While laser treatment in reactive gases still led to comparably high strengths (~64 MPa), the pre-treatment in Ar caused a significant loss of the residual strength (52 MPa). The shear strengths and degradation results correlated with changes in the nanostructures created by the laser irradiation, which was substantially less in case of argon compared to those obtained in reactive gases. The presence of titanium oxides was detected by EDX on all four surfaces.

elib-URL des Eintrags:https://elib.dlr.de/91720/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Laser treatments of titanium surfaces In different atmospheres for Improved adhesion properties
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Haubrich, JanJan.Haubrich (at) dlr.dehttps://orcid.org/0000-0002-5748-2755NICHT SPEZIFIZIERT
Schulze, Karolakarola.schulze (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Hausmann, Joachimjoachim.hausmann (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:April 2014
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Adhesion, adherend, surface pre-treatment, pulsed laser, ageing, titanium grade 9, TiAl3V2.5, thermoplastic polymer, polyetheretherketone (PEEK)
Veranstaltungstitel:Euro Hybrid Materials and Structures 2014
Veranstaltungsort:Stade
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:10 April 2014
Veranstaltungsende:11 April 2014
Veranstalter :DGM
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Strukturen und Werkstoffe (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Werkstoff-Forschung > Metallische Strukturen und hybride Werkstoffsysteme
Hinterlegt von: Haubrich, Jan
Hinterlegt am:11 Nov 2014 14:51
Letzte Änderung:24 Apr 2024 19:57

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