Femtosecond laser texturing of DLC-based coatings by DLW method with sub-micrometer precision

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F22%3A00360189" target="_blank" >RIV/68407700:21230/22:00360189 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s00170-022-09855-0" target="_blank" >https://doi.org/10.1007/s00170-022-09855-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00170-022-09855-0" target="_blank" >10.1007/s00170-022-09855-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Femtosecond laser texturing of DLC-based coatings by DLW method with sub-micrometer precision

Popis výsledku v původním jazyce

Laser texturing of surfaces may provide specific functionality, such as altering hydrophobicity, changing optical properties, or reducing friction and wear. For the latter, surfaces of parts are often coated with protective and/or solid lubricant coating, and texturing may further improve the tribological properties in both dry or lubricated sliding. New laser technologies, such as the direct laser writing (DLW) method using a femtosecond laser, allow the production of extremely precise textures directly into the coating. Here, we describe a method of preparing ultra-precise textures into diamond-like carbon (DLC) coatings on a large area. The textured topography was assessed by 3D laser scanning microscope, which confirmed the repeatability of fs laser processing. Raman spectroscopy mapping, SEM, and XPS were combined to investigate the effect of laser processing on DLC coating in terms of oxidation or structural changes. Traditional process (i.e., coating textured surface) often results in coating adhesion/cohesion failure due to deposition of sharp edges produced by texturing, whereas our approach eliminates this issue. Even complex textures inside the coating are fabricated with a fast speed of 10 s per mm(2) and a high precision in texture depth (tens of nanometers), unlocking many application fields in tribology or microfluidics.

Název v anglickém jazyce

Femtosecond laser texturing of DLC-based coatings by DLW method with sub-micrometer precision

Popis výsledku anglicky

Laser texturing of surfaces may provide specific functionality, such as altering hydrophobicity, changing optical properties, or reducing friction and wear. For the latter, surfaces of parts are often coated with protective and/or solid lubricant coating, and texturing may further improve the tribological properties in both dry or lubricated sliding. New laser technologies, such as the direct laser writing (DLW) method using a femtosecond laser, allow the production of extremely precise textures directly into the coating. Here, we describe a method of preparing ultra-precise textures into diamond-like carbon (DLC) coatings on a large area. The textured topography was assessed by 3D laser scanning microscope, which confirmed the repeatability of fs laser processing. Raman spectroscopy mapping, SEM, and XPS were combined to investigate the effect of laser processing on DLC coating in terms of oxidation or structural changes. Traditional process (i.e., coating textured surface) often results in coating adhesion/cohesion failure due to deposition of sharp edges produced by texturing, whereas our approach eliminates this issue. Even complex textures inside the coating are fabricated with a fast speed of 10 s per mm(2) and a high precision in texture depth (tens of nanometers), unlocking many application fields in tribology or microfluidics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

The International Journal of Advanced Manufacturing Technology

ISSN

0268-3768

e-ISSN

1433-3015

Svazek periodika

121

Číslo periodika v rámci svazku

11-12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

8479-8494

Kód UT WoS článku

000840019100003

EID výsledku v databázi Scopus

2-s2.0-85135846329