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Chemical effects during the formation of various types of femtosecond laser-generated surface structures on titanium alloy

  • In this contribution, chemical, structural, and mechanical alterations in various types of femtosecond laser-generated surface structures, i.e., laser-induced periodic surface structures (LIPSS, ripples), Grooves, and Spikes on titanium alloy, are characterized by various surface analytical techniques, including X-ray diffraction and glow-discharge optical emission spectroscopy. The formation of oxide layers of the different laser-based structures inherently influences the friction and wear performance as demonstrated in oil-lubricated reciprocating sliding tribological tests (RSTTs) along with subsequent elemental mapping by energy-dispersive X-ray analysis. It is revealed that the fs-laser scan processing (790 nm, 30 fs, 1 kHz) of near-wavelength-sized LIPSS leads to the formation of a graded oxide layer extending a few hundreds of nanometers into depth, consisting mainly of amorphous oxides. Other superficial fs-laser-generated structures such as periodic Grooves and irregularIn this contribution, chemical, structural, and mechanical alterations in various types of femtosecond laser-generated surface structures, i.e., laser-induced periodic surface structures (LIPSS, ripples), Grooves, and Spikes on titanium alloy, are characterized by various surface analytical techniques, including X-ray diffraction and glow-discharge optical emission spectroscopy. The formation of oxide layers of the different laser-based structures inherently influences the friction and wear performance as demonstrated in oil-lubricated reciprocating sliding tribological tests (RSTTs) along with subsequent elemental mapping by energy-dispersive X-ray analysis. It is revealed that the fs-laser scan processing (790 nm, 30 fs, 1 kHz) of near-wavelength-sized LIPSS leads to the formation of a graded oxide layer extending a few hundreds of nanometers into depth, consisting mainly of amorphous oxides. Other superficial fs-laser-generated structures such as periodic Grooves and irregular Spikes produced at higher fluences and effective number of pulses per unit area present even thicker graded oxide layers that are also suitable for friction reduction and wear resistance. Ultimately, these femtosecond laser-induced nanostructured surface layers efficiently prevent a direct metal-to-metal contact in the RSTT and may act as an anchor layer for specific wear-reducing additives contained in the used engine oil.zeige mehrzeige weniger

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Metadaten
Autoren/innen:Camilo Florian, R. Wonneberger, A. Undisz, Sabrina V. Kirner, Karsten Wasmuth, Dirk Spaltmann, Jörg Krüger, Jörn Bonse
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Applied Physics A
Jahr der Erstveröffentlichung:2020
Organisationseinheit der BAM:6 Materialchemie
6 Materialchemie / 6.2 Grenzflächenprozesse und Korrosion
9 Komponentensicherheit
9 Komponentensicherheit / 9.5 Makro-Tribologie und Verschleißschutz
Veröffentlichende Institution:Bundesanstalt für Materialforschung und -prüfung (BAM)
Verlag:Springer Nature Switzerland AG
Jahrgang/Band:126
Ausgabe/Heft:4
Erste Seite:266
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Angewandte Physik
Freie Schlagwörter:Femtosecond laser processing; Laser-induced oxide layer; Laser-induced periodic surface strctures (LIPSS); Surface processing; Tribology
Themenfelder/Aktivitätsfelder der BAM:Energie
Energie / Erneuerbare Energien
DOI:https://doi.org/10.1007/s00339-020-3434-7
URN:urn:nbn:de:kobv:b43-505660
ISSN:0947-8396
ISSN:1432-0630
Verfügbarkeit des Dokuments:Datei für die Öffentlichkeit verfügbar ("Open Access")
Lizenz (Deutsch):License LogoCreative Commons - CC BY - Namensnennung 4.0 International
Datum der Freischaltung:18.03.2020
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:02.04.2020
Schriftenreihen ohne Nummerierung:Wissenschaftliche Artikel der BAM