Comparative study of grain sizes and orientation in microstructured Au, Pt and W thin films designed by laser interference metallurgy

Gachot, Carsten; Catrin, Rodolphe; Lasagni, Andrés Fabían; Schmid, U.; Mücklich, Frank

doi:10.1016/j.apsusc.2008.10.032

Cited by 27 publications

(12 citation statements)

References 9 publications

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“…DLIP allows great precision and flexibility in the produced topography and is fast enough to modify large areas, especially if compared to other laser micromachining techniques that require the scanning of the beam through the surface by optomechanical methods [22]. DLIP has been successfully used to pattern surfaces of different materials: from metals [23][24][25][26] to ceramics [27][28][29] and polymers [30,31]. Most common applications are in the field of tribology and biomaterials: topographical, chemical and microstructural modifications induced by DLIP are exploited to modify surface wettability [23], to introduce texture [25] or to tune the interaction with biological species [30,31].…”

Section: Introductionmentioning

confidence: 99%

A parametric study of laser interference surface patterning of dental zirconia: Effects of laser parameters on topography and surface quality

et al. 2017

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This work provides a parametric analysis of surface patterning by laser interference on 3Y-TZP. Best conditions in terms of quality of the produced pattern and minimum material damage are obtained for low number of pulses with high laser fluence. With the employed method we can produce zirconia materials with controlled topography that are expected to enhance biological response and mechanical performance of dental components.

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Section: Introductionmentioning

confidence: 99%

A parametric study of laser interference surface patterning of dental zirconia: Effects of laser parameters on topography and surface quality

et al. 2017

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“…[3][4][5] One possible approach of LST to systematically scrutinize the effects of various pattern geometries and lateral feature sizes in one single laser shot is so-called laser interference metallurgy (LIMET), as used in this study. [8,9] Until now, most research has mainly correlated tribological results with topographic parameters (e.g., structural depth, aspect ratio, area density) of textured surfaces, often neglecting chemical and microstructural effects caused by the fabrication method. [6,7] Moreover, due to a periodic laser intensity distribution and significant heating/cooling rates of up to 10 10 K s À1 , metallurgical effects such as melting, resolidification, and the growth of laser-induced oxide layers can be achieved.…”

Section: Introductionmentioning

confidence: 99%

“…[6,7] Moreover, due to a periodic laser intensity distribution and significant heating/cooling rates of up to 10 10 K s À1 , metallurgical effects such as melting, resolidification, and the growth of laser-induced oxide layers can be achieved. [8,9] Until now, most research has mainly correlated tribological results with topographic parameters (e.g., structural depth, aspect ratio, area density) of textured surfaces, often neglecting chemical and microstructural effects caused by the fabrication method. In fact, the localized heat input strongly affects the microstructure and the surface chemistry regarding the formation of oxide films, for instance.…”

Section: Introductionmentioning

confidence: 99%

Oxide Formation, Morphology, and Nanohardness of Laser‐Patterned Steel Surfaces

et al. 2015

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A large variety of tribological research studies dealt with the effect of laser induced surface textures and the respective parameters such as depth, feature diameter, and area density on the tribological efficiency. However, only few studies have examined chemical and microstructural changes induced by the laser-patterning process, which can have a significant impact on the tribological properties. The aim of this study is to analyze the surface chemistry of laser-induced line-like patterns with a structural wavelength of 18 mm on steel surfaces (AISI 304), i.e., oxide scale thickness and morphology, prior to and after laser processing. X-ray photoelectron spectroscopy combined with an Argon ion sputtering facility was used to measure depth profiles of the iron-and chromium oxide layer. A subsequent analysis performed by atom probe tomography demonstrated that the laser interference patterning leads to an increased iron-and chromium oxide layer by a factor of 8 compared to the polished unpatterned reference surface and to a change in the oxide morphology from a solid solution in the reference to a layered structure in the laser-patterned state. Nanoindentation experiments revealed that the nano-hardness in the laser-intensity maximum position is two times larger than in the reference position. Finally, hardness calculations assuming a bilayer model correlate the observed nano-hardness with the measured surface chemistry.

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“…Figure 6 displays intensity (a and c) and cross-section profile plots (b and d) of micro-coined and hierarchically patterned aluminum surfaces. [15] The resulting topography is approximately sinusoidal. The used periodicity in this case was around 11 mm with a structural depth of approximately 2 mm.…”

Section: Micro-coining and Laser Interference Patterningmentioning

confidence: 97%

Advanced Design of Hierarchical Topographies in Metallic Surfaces by Combining Micro‐Coining and Laser Interference Patterning

et al. 2013

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A new process idea to create hierarchical surface structures is based on the combination of micro‐coining and laser interference patterning. Micro‐coining already proved to be a high precision cold bulk metal forging process which allows for the production of small surface structures in the range of 20–200 µm while fulfilling high requirements related to the geometrical accuracy of those structures. In addition to that, laser interference patterning utilizes interfering laser beams from a pulsed solid state Nd: YAG laser to generate precisely defined surface topographies with a long‐range order on the micron‐scale. For the first time, initial results of a process combination consisting of micro‐coining and laser interference metallurgy to induce hierarchical surface structures will be presented. The results highlight the advantages of the sequence micro‐coining prior to laser interference patterning due to smaller defects in contrast to the inverted process cycle. Additionally, process limitations such as shadowing which may result from steep flank angles of the coined structures and surface roughness effects are discussed by the use of finite element simulations within this research work.

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Comparative study of grain sizes and orientation in microstructured Au, Pt and W thin films designed by laser interference metallurgy

Cited by 27 publications

References 9 publications

A parametric study of laser interference surface patterning of dental zirconia: Effects of laser parameters on topography and surface quality

A parametric study of laser interference surface patterning of dental zirconia: Effects of laser parameters on topography and surface quality

Oxide Formation, Morphology, and Nanohardness of Laser‐Patterned Steel Surfaces

Advanced Design of Hierarchical Topographies in Metallic Surfaces by Combining Micro‐Coining and Laser Interference Patterning

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