Bitte benutzen Sie diese Referenz, um auf diese Ressource zu verweisen:
doi:10.22028/D291-27508
Titel: | Laser Surface Texturing of TiAl Multilayer Films—Effects of Microstructure and Topography on Friction and Wear |
VerfasserIn: | Gachot, Carsten Grützmacher, Philipp Rosenkranz, Andreas |
Sprache: | Englisch |
Titel: | Lubricants |
Bandnummer: | 6 |
Heft: | 2 |
Verlag/Plattform: | MDPI |
Erscheinungsjahr: | 2018 |
Freie Schlagwörter: | laser surface texturing dry friction |
DDC-Sachgruppe: | 600 Technik |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | Laser surface texturing is an efficient way to control the friction and wear properties of materials. Although described in many papers, most previous work relates to a pure topographic view of laser-textured surfaces. As lasers are heat sources, their thermal impact during treatment can be high enough to modify the material’s microstructure or surface chemistry and affect tribological properties as well. This research took a closer look at the microstructure of laser-textured TiAl multilayers, besides topographic aspects. Direct laser interference patterning was used to create well-defined line-like surface textures in TiAl multilayers with differing lateral feature sizes in the micron range. High-resolution techniques such as TEM and XRD highlighted the effect of this method on microstructure, and in particular, the phase situation of the TiAl multilayer. Thermal simulations demonstrated that the maximum achievable temperatures were around 2000 K, thus being high enough to melt Ti and Al. Cooling rates on the order of 109 K/s depended on the lateral feature size, potentially leading to metastable microstructures. Finally, ball-on-disk tests on as-textured TiAl specimens showed a reduction in wear under dry conditions depending on the periodicity of the line-like textures used. |
DOI der Erstveröffentlichung: | 10.3390/lubricants6020036 |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291--ds-275080 hdl:20.500.11880/28758 http://dx.doi.org/10.22028/D291-27508 |
ISSN: | 2075-4442 |
Datum des Eintrags: | 20-Feb-2020 |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Materialwissenschaft und Werkstofftechnik |
Professur: | NT - Prof. Dr. Frank Mücklich |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
---|---|---|---|---|
lubricants-06-00036.pdf | 19,09 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons